http://invisible-island.net/ vile/ vile-toc

# Getting along with vile

Use Ctrl-D and Ctrl-U to scroll through this help information.

Type Ctrl-O to make this the only window on the screen. Type Ctrl-K to get rid of this window.

First, to leave vile, use any of the following:

:q
:quit
:exit
:wq
  (writes current buffer before quitting)
:q!
  (quits without writing any changes!)
Q
:wwq or ZZ
  (will write all changed buffers)
^X-^C
  (don't know why. They don't put in ":q" for us! Actually, if ^C is your interrupt character, this won't get you out of vile.)

To get help (probably just this text), use any of:

> :h
> :help
> ^X-h
> ^A-h

The only vile commands described herein are those not present in vi, or differing greatly from those in vi. There is a section at the bottom describing other differences between vile and vi.

To get a complete list of all commands, type ":show-commands". To get a list of all commands that contain the string "name", type ":apropos name". These lists will show all command synonyms and key sequences that are bound to the same function, along with a short description of the command, and whether it is a motion or operator command.

For a list of motions, type ":describe-motions". Likewise, you can see a list of operators by typing ":describe-operators".

To get information on a specific key-binding or function, use the "describe-key" or "describe-function" commands. You will be asked for a keystroke or function name, and a short description will be shown.

You needn't type full command names -- type a few characters and hit TAB to perform command completion. Hitting a second TAB will pop up a window containing the list of possible completions.

If your screen hops around a lot when you scroll, see the "Note on Scrolling" section near the bottom of this file.

## General Remarks

vile holds text in "buffers". Usually, these correspond to a file that you are editing, but not always. For instance, a buffer might be used to display this help text, or to hold the output of a shell command that you have run. Buffers have names, and these usually match the names of the files they contain.

Buffers are sometimes displayed in windows. A buffer may be displayed in more than one window at the same time. There is no such thing as a hidden window. All existing windows are on the screen. There may, however, be hidden buffers, which are not currently associated with any window.

All yank/delete registers (the default unnamed register, the numbered registers ("1-9") that hold line-deletes, and the named registers ("a-z")) are global to the editor, and not attached to any single buffer. Thus you can delete text in one buffer and put it back in another.

Undo operations are attached to a buffer, not a window. Thus if you have two windows to the same buffer, and make a change in one, you can undo it in the other.

vile supports many, many "modes" (aka options), which are thoroughly explained in the section entitled "Editor modes". But do note that this help file makes references to modes before the concept is fully described. It's a chicken and egg problem....

vile is 8-bit clean, allowing it to be used more easily at non- English speaking sites. See the section on "8-Bit Operation" for more information.

## Command Prefixes

To extend the vi command set in vile, two (or three, depending on how you count them) command "prefixes" exist. These keystrokes, in combination with another key, can be bound as a pair to execute any vile function. The default values for these prefixes are

Key: | Bound to dummy function:
--- | ---
^X Control-X | cntl_x-prefix
^A Control-A | cntl_a-prefix
# poundsign | function-prefix

If you find any of these keys hard to type, or would prefer that they are all control characters (or all non-control), they can be changed by binding a new key to the function listed above. See the section on "Key Rebinding" below. If you do change the values of these keys, most of vile's informational displays (the Binding List, for instance) will reflect these changes. This documentation, of course, will not change.

(The '#' key is used in vi to give terminal independent access to function key bindings. This is also true in vile -- if something is bound to '#2', then it is also probably available with key F2 on your keyboard.)

## Buffer manipulation commands

vile stores buffers in a sorted list. Depending on the setting of the "autobuffer" mode, this list is either sorted in "most-recently-used" order (this is the vile default), or in a fixed order dependent on the order of editing (this is how vi normally does it, and can be attained by turning "autobuffer" off, with "set noautobuffer").

_
  Show a list of the first 9 buffers. Follow this command with a digit to select that buffer, or simply repeat it ("__") to select the buffer most-recently visited. In autobuffer mode, this is identical to "_1". If autobuffer mode is off, the buffer which will be visited with "__" is flagged with a '#' character in the list. Modified buffers are preceded by a '*' in the history list. There are many different ways to get the previous file:
  __
  _1
    (autobuffer mode on)
  1_
    (autobuffer mode on)
  :e#
  ^^ (ctrl-^)
    (but many keyboards can't produce this)

  The buffer number may also precede the '_' command. This is necessary when visiting buffers numbered higher than '9'. For example, one would type "13_" to visit buffer 13 in the list.

  Use tab (or back-tab if supported) to scroll the list of 9 buffers right/left. Pressing '_' will select the first listed buffer; the 1-9 digits also work as expected when the list is scrolled.

  [ See the note under "Differences", below, for comments on vi's use of '_'.]

:e
  Edit a file. If the file is already in a buffer, that buffer will be recalled into the current window. This occurs as follows: If the name given contains no path delimiters (i.e. slashes), then it will be compared to the existing vile buffer names. Failing that comparison (or if there are any slashes in the name), the name will be stretched into an absolute path, and will be compared to the existing buffers' filenames. In either case, the matching buffer will be chosen. If there are no such matches, the file will be fetched from the filesystem. This matching technique introduces an ambiguity, since buffer names are created from the last path component of filenames. To force vile to edit a file from the current directory whose basename matches that of one that was edited elsewhere, simply preface the name with "./". For example, if you edit "../Makefile" and later attempt to edit "Makefile", vile will assume you are referring to the buffer named "Makefile". To get the file in the current directory, specify "./Makefile".
:e!
  Re-edit a file. A different filename can be given, and the buffer name will change to match it. This command is not as necessary in vile as it is in vi, since multiple buffers may have outstanding unwritten changes.
^X-_
  Identical to '_', except that the selected buffer is placed in the current window (windows are described in the next help topic). This is most useful when:
  - two windows show a different view of the same buffer (for illustration's sake, call the views "A" and "B").
  - :e is used to open a new buffer (call this view "C"), which obscures "A".
  - eventually, you decide to return to "A" and "B".

  ^X-_1 does the trick (reverts to views "A" and "B"), but _1 simply moves the cursor into B's window, retaining views "C" and "B".

:n
  Go to the next buffer. "Next" means "least recently used" in autobuffer mode. In noautobuffer mode, "next" means next in numeric sequence. (The ":n file ..." version of the command is not supported.)
:rename-buffer
  Rename the current buffer. Prompts for a new name. Does not affect the filename associated with the buffer. Use ":f" to do that. This command is useful for renaming the "[Output]" buffer, if you wish to preserve its contents, but run a new command.
:set-window
  Set the current window to the specified buffer. This is useful especially when you have split the screen into a number of windows and want to override the automatic layout of "#" and "%" buffers.
:rewind
  Go to the first buffer. This is used only in 'noautobuffer' (vi-style buffering) mode. It does nothing in "autobuffer" mode. Remember that "autobuffer" mode is the default.
:unmark-buffer
  Clears the "modified" status of a buffer. Useful for the creation of temporary buffer(s) that are discarded when the editor exits.
:b
  Edit a buffer. Recalls the named buffer. Does not look for a file of that name. Will find "invisible" buffers.
:ki
  Kill a buffer. Remove the buffer and its contents from the editor. Will ask if changes to the buffer should be discarded. Multiple buffer names may be specified via wildcards (e.g., :ki *.log) and individual buffer names may be selected via name completion (using the same conventions as in filename completion, described below).
^X-e
  Edit the file whose pathname appears under the cursor. For example, if you are editing a makefile, you could edit one of the source files by placing the cursor at the start of its name and using this command. Note that this does not know about some characters that your shell might usually translate for you, like the '$' in '$HOME'.
^X-k
  Kill the buffer whose name or filename appears under the cursor.
*
  Display a list of all buffers, or make that display go away if it's already present. Leave your finger on the key, and it's easy to create and destroy the list. The buffers are numbered; the numbers correspond to the history numbers shown and used by the '_' command, described above. (If the buffer number is greater than 9, then the "nn_" form of the '_' command must be used, since '_' will only accept a single following digit.) The order of the list is either most-recently-used, or fixed, depending on the setting of "autobuffer" mode (see below). vile attempts to keep the contents of the buffer list window up to date if it is left up on the screen while other buffer manipulation commands are given.
^A-*
  Always display a list of all buffers. Useful for updating the list if it's already on the screen but may be out of date. Any argument will cause the list to include all buffers, even those normally considered "invisible". (For example, macros are stored in "invisible" buffers.) [This command isn't as necessary now that the buffer list is maintained dynamically...]

## Window manipulation commands

^X-2
  Make Two windows. Splits the current window in half. This is the usual way to create a new window.
^K or ^X-0
  Get rid of (Kill) this window.
^O or ^X-1
  Make this the Only window on the screen.
^X-o
  Move to the next window.
^X-O
  Move to the previous window.
v
  Make the current window smaller.
V
  Make the current window larger.
^A-^D
  Scroll the next window down half a screen.
^A-^U
  Scroll the next window up half a screen.
^A-^E
  Scroll the next window up one line.
^A-^Y
  Scroll the next window down one line.

  (The previous four commands are useful when comparing two buffers. Mnemonic – think of them as affecting the "A"lternate window.)

zH zM zL
zt zm zb
  These are synonyms for vi's 'z+', 'z.', and 'z-', which position the line holding the cursor at the top, middle, or bottom of the screen, respectively. (Any of the second characters can be upper or lower case.) Mnemonically, these correspond to the H, M, and L screen positioning commands, or to "top", "middle", or "bottom" – take your choice. In a macro, only the first character of the argument is significant, but something like "position-window middle" is most readable. Supplying a count will offset that far from the top or bottom of window. (But the middle is always the middle.)
^X-^R
^X-^L
  Scroll the window right or left by 1/3 of a screen, or by the number of columns specified. Changes the "sideways" value. Neither of these commands will actually move the cursor in the buffer – they only reframe your view into the buffer. If the cursor would be forced to move off-screen (which is of course impossible and undesirable) as a result of the requested sideways scroll, then nothing at all will happen. The commands are arguably crippled as is.

If for some reason you can't get your screen set right via a TERM variable, try the ":screen-rows" or ":screen-columns" commands (which take their args (number of rows or columns respectively) before you type the ":").

[ I put the following bindings in my startup file (.vilerc):

> bind-key split-current-window ^T ; split into 'T'wo windows
> bind-key next-window ^N ; 'N'ext window
> bind-key previous-window ^P ; 'P'revious window

Since ^K already 'K'ills a window, and ^O makes it the 'O'nly window, these give more mnemonic, and faster, access to multiple windows. (These would be the default, but ^N, ^P, and ^T have other meanings in real vi (all of which have alternate bindings in vile.) ]

## File manipulation commands:

The usual ":e", ":r", ":f", ":w" commands are available, though only ":e!" and ":w!" are available of the "!" options. The command ":w >> filename" appends one file to another. The ":r" command reads the named file in after the current line. To read a file before the first line, use ":0r". File completion works like command completion: using the TAB and '?' keys you can complete or see next character choices. Additionally, on unix hosts, backquotes may be used to invoke a shell command that returns the path of a desired file. For example:

> :e `which locks` ; csh looks for script called "locks"
> :e `type -path locks` ; bash equivalent

The commands ":ww" and ":wwq" correspond roughly to ":w" and ":wq", but they each write all modified buffers, rather than just the current one. Giving any numeric argument to ":ww" (i.e. "1:ww") will suppress the per-file and "Press return to continue" message. This may be useful when using the command from within a macro.

The write-all-buffers command attempts to write all buffers whether marked "modified" or not.

As in vi, ranges of lines specified by line numbers (including '.', '$', and '%' shorthands) or marks may precede these commands. Unlike vi, search patterns cannot be used as line specifiers.

In addition, two non-"colon" commands have been added:

^R
  Prompts for a filename, and then reads it in above the current line. If a register is specified (e.g., "a^R ), the file is read into that named register, but not inserted into the current buffer.
^W
  is a writing operator, which prompts for a filename, and writes the specified region to that file. Like all operators, if the command is repeated, as in ^W^W, then lines are affected. Use 10^W^W to write 10 lines.

  If a register is specified (e.g. "a^W ) then the command is not an operator, but writes the specified register to the named file.

## Shell Access

Anywhere a filename is valid, a command name is also valid, entered in the form "!shell-command". The whole line is handed to the shell, and the read or write operation is done on the command's standard input or output, as appropriate. Thus you can type ":e !date" to edit a copy of today's date.

The ": !cmd" shell escape works pretty much as it does in vi. The command ":!!" will rerun the previous such shell command.

The '!' operator works as a filter, as expected.

In addition, the ^X-! command runs a shell command and captures its output in a specific buffer, called "[Output]". This is almost identical to ":e !cmd", except that in that case the buffer is named according to the command name.

These "output capture" commands are most useful in conjunction with the "error finder", '^X-^X', described below.

Filename completion is performed on words of the shell command in response to a TAB character. To actually include a TAB character in the shell command, escape it with ^V. Command completion is not currently implemented – so, for instance, $PATH is not searched for possible completions to the first word of a command line.

On systems supporting job control, ^Z (or ":stop") will suspend vile.

The "set-environment-variable" (or "setenv") command can be used to export new or changed environment values to spawned programs. (Note that this might or might not affect the operation of vile features that are themselves controlled by environment variables, since those variables may only be checked once at the time that vile is started.)

The :cd and :pwd commands are of course supported. Unlike vi, filenames will track their directory of origin, so you can't simply edit a file in one directory, cd to another, and write it. You must explicitly write to ./filename in the new directory to accomplish this. ":cd -" will return to the previous directory, as it does in some shells. The CDPATH environment variable provides a search path for the :cd command. This variable's path delimiters are host-specific, as follows:

Unix | colon
DOS, OS/2, Win32 | semicolon
VMS | comma

Giving an argument to the ": !" (also called "shell-command" when writing macros) will suppress the "Press return to continue" message after the command runs.

Additional shell-related features are described in the section of this help file entitled "Working in a project hierarchy".

## Text manipulation command:

Remember, these are only the new or different commands. The standard vi set should still work.

The vi "global" (":g") command is present. So is the "substitute" (":s") command. These both look pretty different while they're being used than they do in vi, due to the interactive nature of the prompting. And, since the searching is done right after the pattern is entered, there may be a slight delay while you're trying to finish typing your complete command. (If the pattern does not exist, you may not get to finish typing your command at all.) You can use the commands just as you would have in vi, i.e. ":g/oldpat/s//newstring/" will work. But you won't see any of the '/' characters. Try it– you'll get the idea. Line ranges are not possible on ":g", but they are on ":s".

The ":g" command can be followed by any of the "global command" modifiers. Use ":describe-globals" to see the whole list, or simply use name-completion. These are the most commonly used:

- l (list),
- p (print),
- pp (print with buffer name and line number),
- < (left shift),
- > (right shift),
- r (read file),
- d (delete),
- L (lower case),
- U (upper case),
- ~ (flip case),
- put (append yanked text),
- Put (prepend yanked text),
- s (substitute),
- trim (trim trailing whitespace).

For example, ":g/pattern/Put" will insert the contents of the default yank register just above every line containing "pattern". The ":g" command can only be used over the entire file – smaller regions are not permitted.

The ":v" counterpart to ":g" is also implemented – it performs the given command on all lines that don't match the given pattern.

The substitute command can be followed by any of 'g', a digit, or 'p', to do the substitution for all occurrences, the n'th occurrence, or to print the resulting line respectively. You can also add a 'c', and you will be asked to confirm each replacement before it occurs. The text being replaced will be highlighted, and you can answer with 'y', 'n', 'q', or 'a'. 'a' will suppress further prompting, and will do the rest of the replacements.

The ":&" and '&' commands work much as they do in vi, and repeat the last substitution. The '^A-&' command is a new operator (see below), so it can work on regions: for example use '^A-&}' to "repeat the previous substitution over the rest of this paragraph".

The named marks such as "'a" work as they do in vi. vile allows a decimal digit as a mark. It also recognizes special marks for the beginning and end of a selection: '< for the beginning and '> for the end (see the discussion of the quoted motion command).

### Infinite Undo

The regular undo ('u') and line-undo ('U') are available for all commands. They are a little more predictable than their vi counterparts, since they do not share the default yank register for their operation. Also, line-undo ('U') is available until the next change anywhere in the file, rather than until you leave the line.

vile also lets you undo all changes made to a buffer since it was first edited (so-called "infinite undo"). The '^X-u' command will undo changes, one by one (or given a count, several at a time). The '^X-r' command will walk forward, redoing the previously undone changes one by one. A fresh change to the buffer will cause previously undone changes to no longer be redoable. Remember that with key rebinding, you can change your 'u' or 'U' command to be an infinite undo, making it easier to type.

In addition, the '.' command, which normally re-executes the last buffer-modifying command, has special behavior with respect to undo. If the '.' command immediately follows one of the undo commands ('u', '^X-u', or '^X-r'), then it will perform another undo or redo, as appropriate. If there are any intervening commands, then '.' will re-execute the last command prior to the undo. [ This modification to the behavior of "u." does not conflict (much) with traditional use of '.', since by definition, the sequence "u." is (almost) always identical to "uu", and the latter is more easily typed. (Credit goes to the designers of "nvi" for this trick.) (the one case I know of where "u." is not identical to "uu" is when putting back the contents of the numbered registers: the sequence "1pu.u.u.u. would successively insert the contents of "1, "2, "3, "4, and "5, allowing you to choose the "correct" register. This sequence no longer works. You can still put them all back with "1p..... ("1p for screen) and then delete the ones you don't want. ]

The number of changes stored in the undo "history" is controlled by the numeric mode "undolimit". The default history length is 10 – that is, only 10 changes may be undone. Set the undolimit to 0 for truly infinite undo. This can consume a lot of memory. You can turn it completely off (and purge the undo stack) by setting noundoable.

The cursor position after an undo may not always be the same as it would be in vi.

### Operators

vi has a class of commands known as "operators". Operator commands are always immediately followed by a motion command. The region of text affected by an operator is bounded on one end by the initial position of the cursor, and on the other by the cursor position after the motion is completed. Thus the delete operator ('d') can be followed by the word motion command ('w'), causing the next word to be deleted. The sequence "dG" will delete from the cursor through the end of the file, and "d/junk" will delete to the next occurrence of the string "junk". As a special "honorary" type of motion, operators can all be "stuttered" to affect lines. Thus "dd" deletes one line, "4dd" affects 4 lines, etc.

Most operators affect the region exactly, but some cause only whole lines to be affected. This is usually a function of what sort of motion follows the operator, but can sometimes be affected by the operator itself. The best example of motions having different effects is the 'goto-mark' motions, the ''' and '`' commands. If a mark is set, say mark 'a', with the 'ma' command, then if the command d`a is executed, the exact text between the cursor and the mark will be deleted. If, on the other hand, the d'a command is used, the deleted region will include the lines containing the cursor and the mark in their entirety.

Some operators in vile can be "forced" to affect regions of whole lines, though the motion wouldn't normally imply it, by using the '^X' form of the command. (It's not really forced – it's really a separate operator.) For example, "d%" (assuming you are on a curly brace) will delete a C-style block of code. "^X-d%" will delete that same area, plus anything else on the lines containing the curly-brace endpoints.

Note that some operators always affect whole lines, no matter how the motion is specified. The '!' operator is an example: "!w" will always filter an entire line, and not just a single word.

vile extends this notion of the "shape" of a region by adding the concept of rectangular regions, whose boundaries are delimited by the rectangle whose opposite corners are at the cursor and at the other end of the motion, respectively. See the section "Rectangular regions" below.

The "show-operators" command will show all available operators. The "show-motions" command will show all available motions. Any operator may be followed by any motion.

There are several new operator commands in vile:

^A-~
  Is the operator form of the '~' command, so "^A-~~" changes the case of all characters on the current line, "^A-~w" does it to a word, "3^A-~}" does it for 3 paragraphs, etc. (In vile, the simple '~' command will take a repeat count, unlike some versions of vi. If you wish it to be an operator, rebind '~' to the "flip-til" command.)
^A-u
  Like ^A-~, but converts the region to upper case.
^A-l
  Like ^A-~, but converts the region to lower case.
^A-f
  Format the region based on the current fill column. The initial indentation of both the first and second lines of each "paragraph" in the region are preserved, and all subsequent lines get the second line's indentation. This makes indented/outdented paragraphs (like this one) work correctly. (This is intentionally not the same behavior obtained by using "!fmt", since that behavior is obviously available elsewhere.) The usual usage of this command is "^A-f}", which reformats the current paragraph. The re-formatting begins again with each new paragraph, where a paragraph has the same boundaries used by the '{' and '}' commands – i.e. blank lines, or lines beginning in .I .L .P .Q or .b. This makes it possible to use "3^A-f}" or "^A-fG" to reformat multiple paragraphs. The reformatting operation knows a little about both C, C++, and shell comments, and will attempt to do the "right" thing with lines that start with '#' or '*' characters. (It also knows about the '>' character, making it fairly easy to reformat mail and news inclusions... but is it ethical? :-)
^X-s
  For every occurrence of a search string, put in a replace- ment string. This is similar to "s/pattern/replacement/g" over the region.
^A-&
  Is an operator in vile, similar to the traditional & command. It repeats the last substitution over the specified region. (Unlike the '&' command, this one will remember trailing g, p, l, or numeric options.)
^X-d
  Delete the region, including the lines it starts and ends on.
^X-c
  Change the region, including the lines it starts and ends on.
^X-y
  Yank the region, including the lines it starts and ends on.
^A-t
  Trim trailing whitespace from all lines in the region.
^A-<SPACE>
  Convert tabs to spaces, using the current tabstop value.
^A-<TAB>
  Convert as many spaces to tabs as appropriate.
^A-b
  Blank out a region. Turns the region to whitespace. Useful with rectangular regions.
^A-r
  Open up a rectangle. Text to the right of the left edge of the rectangular region will shift to the right by the width of the rectangle, leaving a whitespace "hole".
^A-q
  Sweep out a rectangle with multiple motion commands. See description of 'q', below.
^A-s
  Select and yank a region. The region will be highlighted on the screen, as if it had been swept by a mouse. It is also yanked, as with the 'y' operator. This operator is useful in combination with the ^S motion command, which lets one reference the selected region with other operators. (If you use this command much, it is recommended that you bind it to and easier to type sequence, such as 'S'.) See also the q (quoted motion) command.

### Text insertion

^X-p
  Causes the previously yanked or deleted text, no matter how it was obtained, to be inserted after the current line. Usually text that did not consist of whole lines where it came from is inserted immediately following the cursor.
^X-P
  As above, but the text is put before the current line. Thus "dw" followed by a "p" command does a normal insertion of the deleted word, whereas "^X-p" results in the word being inserted on a line by itself.
R
  vi's overwrite mode is supported. Note that the combination of overwrite mode and the (ANSI) arrow keys can be used to give a "picture drawing" mode of operation: anything you type goes into the buffer without moving adjacent text, and you can move around using the arrow keys without leaving overwrite mode. Hint: start with a buffer full of lines that consist entirely of blanks (as opposed to blank lines).
^A-i
^A-o
^A-O
  Like their 'i', 'o', and 'O' counterparts, but any autoindent or cmode setting is ignored for the duration of this insert. These are most useful when pre-formatted text is being pasted, as when using a mouse.

### Searching

^X-/
  Does a forward search for the "word" located under the cursor.
^X-?
  Does a reverse search for the "word" located under the cursor.
^A-/
  Does not do a search, but sets the search pattern to the "word" under the cursor. Useful for "picking up" a word from one buffer, and searching for it in another.

The following two commands may not always be present in vile, depending on how it was built:

^X-S
  Incremental forward searching. As you enter the search string, the cursor is advanced to the next match with what you've typed so far. Use ^F and ^R to continue the search forward or in reverse, using the current pattern.
^X-R
  As above, but in reverse.

### Tags

vile supports vi-style "tags" files.

":ta" or ":tag"
  allows you to enter a tagname to locate. The editor opens a buffer containing the requested tag. Take note that tag completion is supported, so it's possible to type a partial tagname and then press TAB to force vile to complete the name, assuming it's unique. If not unique, press TAB twice to see a list of all possible completions. Example (using the vile sources):

  >     :ta is_sl<tab>

  is completed as "is_slashc" . Pressing RETURN following completion opens a buffer on estruct.h, with the cursor positioned at the first definition of this tagname.

^]
  Uses the identifier currently under the cursor as the tagname.
^T or ^X-^] or ":pop"
  - pops to the file and location just previous to the last tag command.
^A-^] or ":next-tag"
  continues searching through the tags file(s) for additional matches.

When one of these commands is used, vile will (by default) look for a file named "tags" in the current directory, and load it into a hidden buffer for use during tag searches. This buffer is editable if you wish (":e tags"), but will not appear in the buffer lists. If a buffer named "[Tags 1]" is already available when a tag is first requested, it will be used instead of a file found by searching the tags setting, and of course will remain visible.

Take note that the tag locate and pop commands, by default, move the cursor out of the current window if the target tag is located in one of the editor's other windows. To "pin" all locate and pop actions to the current window, set pin-tagstack mode.

The name of the default tags file may be changed with "set tags" (see "tags" under "Editor modes", below). If multiple filenames are given in the "tags" setting (separated by whitespace), they are searched in order, and placed in buffers named "[Tags 1]", "[Tags 2]", "[Tags 3]", etc.

Tags searched for using '^]' will always be matched exactly. If the ":ta" form of the command is used, tag matches will be exact unless the mode "taglength" is set non-zero, in which case the first tag matching that many characters will be used.

Filenames referred to in tags files are expanded, so environment variables and shell special characters like ~ may be used.

The stack of buffer locations waiting to be "popped" to with the '^T' (or '^X-^]' or ":pop") command may be viewed with the "show-tagstack" command. The "[Tag Stack]" buffer is animated – it will dynamically keep track of current tag references.

Limitations: In a real vi-style tags file, there are three tab separated fields. The first contains the tagname. The second contains the (relative or absolute) filename. Everything after the second tab is an arbitrary ex-mode command. vile is not quite so flexible as regular vi, and only supports a couple of commands in that last "field". It can be a line number, in which case the tag is an absolute index into the file. Or, it can be a search command. If it begins with a '/', the search goes forward. If it begins with a '?', the search goes backward. In either case, the matching delimiter must be the last character on the line in the tags file.

All of this isn't as bad as it sounds, since ctags, the program most people use to generate tags files, does generate exactly this format. (Surprise, surprise.) However, if you attempt to create your own tags files, or have other tools that do so, you should be aware of these limitations.

For further tags usage examples, refer to the section of this help file entitled "Working in a project hierarchy".

## Miscellaneous commands

^A-d
  Remove blank lines ("delete-blank-lines"). If the cursor is on a blank line, then it and any blank lines surrounding it will be removed. If a non-blank line, then any immediately following blank lines will be removed. If given an argument, will force exactly that many blank lines to exist at that point, regardless of how many were there before. Moves current location forward, to allow repeated use.
^A-e
  Remove empty lines (`delete-empty-lines`). This command differs from `delete-blank-lines`:
  - empty lines contain no printable characters; blank lines contain no characters.
  - this command can be used with a range, and works as an operator.
  - the feature for forcing blank lines to appear is provided by another operator `force-empty-lines`.
^X-E
  Force gaps with "empty" lines (no printable characters) to have the same size (`force-empty-lines`). This uses the variable $empty-lines as the size that should be used. Like `delete-empty-lines`, this is an operator and can be used with a range.
^X-^X
  The "error finder". Goes to the next file/line error pair specified in the last buffer captured from a command's output. This buffer is usually created with the ^X-! command.

  For example, "^X-!cc -c junk.c" puts all of the compiler output into the buffer named "[Output]".

  Repeatedly hitting ^X-^X will position the editor at each error in turn, and will eventually start over again at the top. The buffer searched for "errors" will be the last shell command run, or the buffer named with the "error- buffer" command. The "Entering directory XXX" and "Leaving directory XXX" messages that GNU make puts out with the -w switch are honored, so that files are found with the correct path.

  Tip: I use the following macro to quickly grep a source directory for the string under the cursor:

  > use-register g load-register "^X!egrep -n : *.[chs]^M"

  where the ^X and ^M are each single control characters, entered using ^V to escape them. Then I invoke with @g to execute. [NB: this macro won't work with the DOS/VMS/Win32 versions of vile, since ':' doesn't expand to the word under the cursor on those hosts due to conflicts with filename drive/disk delimiters. For those hosts, substitute '&' instead.]

  The command parsing is done with regular expressions. Vile compiles these from the buffer [Error Expressions], which are a set of regular expressions with extra embedded information. Unescaped '%' followed by 'V', 'B', 'F', 'L', 'C' or 'T' substitute verb (Entering/Leaving for gmake), buffer (i.e., scratch buffer with a bracketed name), file, line, column and text fields.

  The line and column numbers are 1-based, treating tab character as a single column. Use %l and %c, respectively for 0-based values.

  The V, B, F, T substitutions are for nonblank fields, which is not always enough, so vile additionally recognizes a range in brackets, e.g.,

  >     ^%[^:   ]:\s*%L:%T

  is compiled as

  >     ^\([^:  ]\+\):\s*\([0-9]\+\):\(.\+\)

  The expressions can be manipulated with scripts:

  > ; example of a macro to add to [Error Expressions]
  > store-procedure AddError
  > ~local %oldbuffer
  > setv %oldbuffer=$cbufname
  > compile-error-expressions
  > yank-line
  > edit-file '[Error Expressions]'
  > unsetl view
  > goto-beginning-of-file
  > put-before
  > unmark
  > setl view
  > buffer %oldbuffer
  > compile-error-expressions
  > ~endm

  Use the show-error-expressions command to display the contents of the [Error Expressions] buffer, along with the expanded regular expression and annotation for the substitutions. The result is shown in [Error Patterns].

^X-t
  Set or report on the tab-stop width. To set, the spacing must precede the command, as in "4^X-t". The "set tabstop" command described below does the same thing. The status output indicates whether the buffer is currently using the local or global copy of the tabstop value.
^X-f
  Set the local fill-column to be used with ^A-f and auto-wrap mode on insert. The default value is 7/8's of the screen size, with a maximum of 70. Since arguments come before commands, you type: 65^X-f. The "set fillcol" command does the same thing. The status output indicates whether the buffer is currently using the local or global copy of the tabstop value.
^X-X
  Set current encryption key for this buffer. See "Encryption" below for more information.
K
  Count prefix. The first time you type it, it is equivalent to an argument of 4 to the following command. If you repeat it, it becomes worth 16, the next time 64, etc...
%
  In addition to finding matching braces, brackets, and parentheses, the '%' command will find matching #if's, #ifdef's and C-style comments. If the cursor is on the # of "#ifdef"/"#if", the '%' command will find the matching "#endif" or "#else". On an "#else" it will find "#endif", and on "#endif" it will go back up to the "#ifdef"/"#if". If the cursor is on any part of a "/*" or "*/" sequence, it will find the appropriate corresponding C comment endpoint. (See fence-if, fence-pairs to customize this behavior).
\
  Identical to the ` motion, in that the cursor moves to the specified mark (i.e. \a moves to mark 'a'). When used with an operator command, the resulting region is rectangular instead of "exact". This is similar to the ' motion, which also goes to [the line holding] the mark, and causes regions to become "full line" regions.
q
  A "quoted motion" command. After entering 'q', more motion commands are accepted until another 'q' is entered. The result of the motion is the cumulative effect of all the entered motions. Thus, one might type:

  >     dq<arrow><arrow><arrow>...<arrow>q

  to delete all of the text between the starting point and the final cursor position.

  Any motion command can appear in between the two 'q' commands. If used alone, i.e., not in an operator context, then the spanned text is highlighted, and yanked on completion (as well as setting the special named marks '< and '>) as a side effect. The resulting selection can then be manipulated with the ^S pseudo-motion, below. The selection-clear command removes the selection's highlight attributes.

  Most motions will select up to but not including their endpoint. The 'e', 'E', 'f', 't', and '%' commands are exceptions to this. If used in an operator context the cursor position may sometimes appear incorrect. This is because operators sometimes change the cursor location internally to force the motion to do the "right" thing, and the 'q' command makes these internal "fudge factors" visible. An example of this is "dq%q" which does the right thing (assuming the cursor is on a '(' to start) but which looks wrong, since the cursor will overshoot the ')' before the second 'q' is typed.

  If a mouse is available on a Unix host, whether in an xterm via the "xterm-mouse" setting, or in xvile, then button 1 can be clicked to do the extensions, since it, too, is a motion command. (Of course in xvile or winvile, it is easier to simply "click and drag" – the 'q' command isn't really necessary at all.)

  Use the repeat-count to specify types of selection: exact=1 (default), full-line=2, rectangle=3.

^A-q
  As above, but the motions will sweep out rectangular regions.
^S
  A motion, or "pseudo-motion" command. If a region of text has been previously selected, either with the mouse (if available) or with the keyboard selection operator (^A-s) it can be referenced by any other operator by applying that operator to the ^S motion. As an example, suppose a word is selected with the mouse, or with ^A-sw. Then, from anywhere in that buffer, one can use d^S to delete that word. ^S used by itself will move the cursor to the start of the selected region. ^S applied to the selection operator (^A-s) will extend the current selection to include the current location of the cursor.

  ^S makes it possible to select any region (including rectangular regions) of text with a mouse, and then apply any vi operator to that region.

=
  If "visual-matches" is set, then vile will highlight all occurrences of a pattern that is searched for with one of the usual searching commands. The '=' command will clear this highlighting, until the next search for a different pattern.
:select-all
  On hosts where vile provides mouse support, the select-all command selects, highlights, and yanks all text in the current buffer to the unnamed register. Clear the selection's highlight attributes as follows:

  Technique | Applies To
  --- | ---
  selection-clear command | any host
  left mouse button (LMB) click | winvile
  click mode line with LMB | win32 host
  press ESC | winvile

### Internal State

vile can display more of its internal "state" than traditional vi. Portions of the internal "state" may be viewed using various "show-xxx" commands:

:show-abbreviations
  displays list of shortcuts defined with the ":abbr" command. (synonymous with ":abbr<cr>")
:show-buffers
  displays the current list of available buffers. Given any numeric argument, will list all buffers, even those normally invisible or considered temporary.
:show-color-schemes
  displays a color chart of the user-definable color schemes (see palettes.rc for examples)
:show-colors
  displays a color chart of the builtin color names, the internal coding used in the syntax filters (e.g., C0), the $palette mapping and examples in bold, italic, etc.
:show-commands or show-bindings
  displays the list of commands and the keys bound to them.
:show-global-modes, show-modes
  both synonymous with ":set<cr>"
:show-help
  synonymous with ":help", '^A-h', etc.
:show-history
  displays the user's command line history.
:show-local-modes
  Shows the local value of each mode, if it differs from the global value. If a majormode is set on the buffer, that is used for the "global" value in this display.
:show-majormodes
  displays the builtin and user-defined major modes.
:show-mapped-chars
  displays the strings mapped for command mode with ":map". (synonymous with ":map<cr>")
:show-mapped!-chars
  displays the strings mapped for insert mode with ":map!". (synonymous with ":map!<cr>")
:show-printable
  displays a table of the first 256 printable characters, with associated types. To allow it to fit within 80 columns, abbreviations are used, which are the same names as used in character classes.

  Use a repeat count to show data for the wide locale. The default (no repeat count) shows the narrow locale. Use show-wide-printable to see wide characters past the first 256.

  If showchar is set, this also shows a line for the current character in the current buffer, with the character type information for that character.

:show-registers
  displays the current contents of the named and numbered registers.
:show-system-mapped-chars
  displays the strings mapped to represent the terminal's function keys.
:show-tagstack
  displays the contents of the "tags stack", the list of locations from which the ":ta" or '^]' commands have been used, and to which the ":pop" and '^T' (or '^X-^]') commands will return.
:show-terminal-chars
  displays the list of special chars normally associated with the TTY driver, i.e. backspace, interrupt, suspend, etc.
:show-variables
  displays the list of vile state $variables and temporary %variables, and their values. Use a repeat count to show all mode variables, including majormode submodes rather than just the state variables.
:show-wide-printable
  displays a table of the "wide" (Unicode) printable characters, with associated types. To allow it to fit within 80 columns, abbreviations are used, which are the same names as used in character classes.

  Use a repeat count to show the data for successive "pages" of 256 characters, e.g., 1 for 256-511, 2 for 512-767, etc.

  This uses the same buffer as show-printable. If showchar is set, this also shows a line for the current character in the current buffer, with the character type information for that character.

## New Registers

In addition to the usual "a through "z, and "1 through "9, vile has additional registers.

The register named '<' contains the last few hundred keystrokes that have been typed by the user. The principle use for this is to make it easier to create :map commands based on commands you've already given. [It's also useful sometimes when debugging to be able to see what key sequence led to a problem...]

The register name '.' contains the current selected text in xvile. Also in xvile, the register name ';' is a synonym for the clipboard. Other versions of vile permit use of '.' and ';' as supplemental register storage.

The register name '"' (" is double-quote) is a synonym for the default unnamed register, which is also sometimes referred to as register 0.

## Completion

Many responses to vile prompts need not be typed in their entirety. vile can complete the response for you. This applies to command names, file names, vile modes, vile variables, tags, buffers, and the "terminal characters".

To invoke vile completion, type a few characters and hit TAB (or your current "name-complete" terminal character). Hitting it a second time will pop up a window containing the list of possible completions. If there are more completions than will fit in the window, hitting further TAB characters will cause that window to scroll through the choices. The window will go away when the current command is finished.

An older form of completion is also supported:
You can also type a question mark (or the current "test- completions" terminal character) to display a list of the characters that you would have to type to complete the command. For example, to complete the "unmark" or "unmap" commands:

>     :unm?                   – you type
>     :unm{a}[pr]             – you see

This style of completion-display shows curly braces around the string that will be supplied by pressing TAB, and square brackets around characters that you must type to make the command unique.

## Arrow keys

vile will understand your terminal's arrow keys, as long as they are described correctly in the termcap/terminfo database. The keys are interpreted as function keys, and are by default bound to the up, down, left, and right screen motions. These bindings are honored in insert mode as well as command mode.

## Rectangular regions

Just as the regions defined by vi's commands and motions can either be "exact", or encompass "full lines", regions in vile can in addition be "rectangular". The easiest way to use a rectangular region is with the '\' motion, which, like '`' and ''', goes to a named mark. The region it describes, however, is "rectangular" (instead of "exact" or "full line"). The following operators know how to correctly act on rectangular regions:

^A-r
  Opens up a rectangle. Text to the right of the left edge of the rectangle is shifted right by the width of the rectangle.
>
  Shift right. Identical to '^A-r' when region is rectangular.
d
  Deletes the (rectangular) region. Text to the right moves left to fill the rectangle.
<
  Shift left. Identical to 'd' when region is rectangular.
y
  Yanks the (rectangular) region. (vile remembers that the yanked text is rectangular in shape.
c
  Change the region. If the region is not rectangular, insert mode is entered after the region is deleted. If the region is rectangular, the user is prompted for text with which the lines of the rectangle will be filled.
^A-u
^A-l
^A-~
^A-b
  These four operators perform their character transformations on rectangular regions, as well as exact or full-line regions. (uppercase, lowercase, flip-case, and blank, respectively)
p P
  The 'put'ting commands know whether the text being 'put' was originally rectangular, and will do a rectangular insert of the text, in front of or behind the cursor. The cursor position defines the upper left corner of the insertion.
^A-p
  These two forms of the put command force the text being
^A-P
  'put' to be inserted as if it had been rectangular when originally yanked or deleted. The width of the rectangle is the length of the longest line in register being 'put'.

Note that because it is sometimes hard to manipulate rectangles containing or bordering on tab characters, currently (for some operations) vile "detabs" the region being operated on before commencing, and re-entabs the lines again after the operation. The re-entabing is limited to leading whitespace, and of course is suppressed if "notabinsert" mode is set. [ This misfeature is arguably a bug, and may be fixed. In the meantime, you've been warned. ]

## Editor modes

Modes come in various flavors and types and constitute the editor's primary configuration mechanism. vile supports these mode types:

boolean enum int string

The value of a mode is specified via "set" or "setl" (the latter command only affects buffer modes, as described below). Mode values may be cleared with "unset" (or "unsetl" for buffer modes), as well as other idioms described later. Clearing a mode, by the way, is a fancy way of saying that its value is set to 0 or "", the latter for string types. When an enum mode is cleared, vile selects whichever enum constant is assigned the internal (read compiled) value of 0. Some concrete examples:

Technique | Applies To
--- | ---
mode type | mode name | example usage
boolean | autoindent | set autoindent
enum | visual-matches | set visual-matches=reverse
int | fillcol | set fillcol=75
string | tags | set tags="../tags tags"

### Flavor: universal modes

These modes are not directly associated with buffers, windows, or languages. Consequently, a universal mode affects the editor under all relevant operating conditions.

To set/modify a universal mode, use the "set" command. Startup file examples:

>     set vtflash=normal
>     unset flash           ; or    set noflash
>     set errorbells

Since the set command (within a startup file) accepts multiple modes, this oneliner is equivalent:

>     set vtflash=normal noflash errorbells

To clear a universal mode use one of these idioms:

>     set    no<modename>
>     unset  <modename>
>     setno  <modename>

For completeness sake, note that the "local" version of the set/unset commands ("setl"/"unsetl") do not make sense (and elicit no effect) when used with universal modes.

### Flavor: buffer modes

These modes are inherited from a set of "global" buffer modes, but bound to a specific buffer once a "local" value is independently established. To set and reset local modes, use "setl", "unsetl", or "setlno". An actual example is useful for illustration purposes.

When vile is started, the global value of "view" mode is unset by default (i.e., false) and all newly visited buffers are editable. But suppose I edited the file "precious.cpp", which I did not want to modify. There are two approaches that could be taken:

>     $ vile
>     :set view          ; enable view mode globally
>     :e precious.cpp    ; edited in "view" mode
>     :e other.cpp       ; ditto

or

>     $ vile
>     :e precious.cpp    ; initially edited in "noview" mode
>     :setl view         ; "view" mode now bound to precious.cpp
>     :e other.cpp       ; edited in "noview" mode

In the first approach, view mode is enabled globally and consequently affects all existing buffers and all subsequently created buffers. This solution works for the stated goal, but makes it impossible to modify any other buffers. The second approach affects only the targeted file.

### Flavor: window modes

Similar to buffer modes, window modes are bound to a specific window once a local value is independently established. These modes are set/cleared with the same commands as buffer modes.

### Flavor: majormodes (later)

Until the subject of syntax coloring is described, it's not very useful to discuss majormodes. So, in the listing of modes below, skip over anything tagged with (M). But don't fret, these modes are described separately in the topic entitled "Majormodes".

### Current mode settings

To display modes, use "setall", "modes", "set all", or simply "set". vile displays all of the current mode values in the `[Settings]` buffer.

vile shows local mode values only if they differ from the global values, whether they have been independently set or not.

To show just the local mode values that differ from the global values, use show-local-modes.

### Modes in detail

Shown next is a listing of vile's various modes. Synonyms, if they exist, are shown in parentheses and a trailing U, B, W, or M indicates whether the mode is universal, buffer, window or major.

alt-tabpos (atp)
  If set, vile will position the cursor over tab and control characters the way emacs would, that is, at the start of a tab or control character display sequence. If turned off (the default), the cursor is positioned over tabs and control characters the way it would be in vi, i.e. at the end of the tab or control character display sequence. (To match the behavior of earlier versions of vile, should be set.) (U)
animated
  Controls whether vile automatically updates the contents of scratch buffers when their contents would change as a side effect of commands. To retain the position within buffers when recreating them, use the reuse-position mode.

  The animated buffers include:

  >     [Binding List]
  >     [Buffer List]
  >     [Color Palette]
  >     [Color Schemes]
  >     [Command-Bindings]
  >     [Error Expressions]
  >     [Error Patterns]
  >     [Extra Colors]
  >     [Insert-Bindings]
  >     [Major Modes]
  >     [Map Sequences]
  >     [Map! Sequences]
  >     [Named Marks]
  >     [Printable Chars]
  >     [Registers]
  >     [Select-Bindings]
  >     [Settings]
  >     [Tag Stack]
  >     [Terminal Characters]
  >     [Variables]

  Turning off "animated" is rarely necessary: the capability is present mostly as a debugging aid. (B)

autobuffer (ab)
  Controls whether vile uses "most-recently-used" style buffering, or vi-style (command-line order) buffers. That is, if autobuffer is on, then buffers are sorted in order of use, in that buffers not frequently used will drift to the end of the list. If this mode is not on, then vile will behave more like vi, in that buffers remain in a fixed order, that in which they were edited. (U)
autocolor (ac)
  Automatic syntax coloring. If set to zero, automatic syntax coloring is disabled. Otherwise, it should be set to a small positive integer which represents the number of milliseconds to wait before invoking the "autocolor-hook" hook. The editor will wait the specified amount of time for a "quiet interval" during which the user hasn't pressed any keys. (B)
autowrite (aw)
  vile will write out any changed buffers for which this mode is set before performing a ^Z, "stop", "suspend", ":!<cmd;>", or '^X-!<cmd;>'. The ":sh" command is not affected, nor is ":stop!" or ":suspend!". Since buffers inherit the global value of a mode, simply setting the global autowrite value will cause all buffers to be auto-written. Individual buffers can be forced or prevented from autowriting by setting the local value of the mode for those buffers appropriately. [In real vi, autowrite mode will also force buffers to be written when switching between files. This is unnecessary in vile.] (B)
autoindent (ai)
  During insert, newly created lines inherit their leading indent from the previous line in the buffer. (B)
autosave (as)
  Automatic file saving. Writes the file after every 'autosavecnt' characters of inserted text. Other file changes are not counted. (B)
autosavecnt (ascnt)
  How often (after how many inserted characters) will automatic saves take place. 256 by default. (B)
backspacelimit (bl)
  When in insert mode, this controls whether one can backspace past the point at which the insert began. (B)
backup-style
  Specifies the style used for creating file backups when a file is written. Can have values of "off", ".bak", and (under UNIX) "tilde", for no backups, DOS-style .BAK files, and file.c~ style backups, respectively. Files are copied before being written, to protect links to the original file. Permissions, modification and access times are all preserved. If creation of the backup fails, the write of the file will fail, unless it is forced using the ":w!" form of the write command. (B)
bcolor
  On systems supporting this, will set the background color. On most systems, the choice of colors is fixed, although the X11 version (xvile) can be given customized colors at startup or via .Xdefaults. See notes about the color palette down below, under DOS specifics. (U)
byteorder-mark (bom)
  is a prefix used to distinguish different types of UTF-encoding. It must be one of the following values:

  >     "auto"
  >     "none" (default)
  >     "utf-8"
  >     "le-assumed"
  >     "be-assumed"
  >     "utf-16le"
  >     "utf-16be"
  >     "utf-32le"
  >     "utf-32be"

  The "auto" setting tells vile to set the buffer's byteorder-mark value based on whatever the file-encoding happens to be.

  The default value is "none", which is slightly different, telling it to accept byteorder-mark values as in "auto", but not to write them for buffers which have no explicit byteorder mark set.

  The "utf-XXX" values are explicit settings, which override the auto/none logic. Use "le-assumed" or "be-assumed" for cases where the platform's preferred byteorder is known, and where byteorder marks may be absent from files, e.g., with Windows. (B)

bufname-expr
  Regular expression used for parsing of $bufname, subject to the cursor-tokens mode. If the expression is inactive, use character-class based internal function which combines buffer- and filename-classes. This is a buffer mode. (B)
ccolor
  On systems supporting this, will set the cursor color. On most systems, the choice of colors is fixed, although the X11 version (xvile) can be given customized colors at startup or via .Xdefaults. See notes about the color palette down below, under DOS specifics. (U)
check-access
  Check file permissions before source'ing it in a script. This tells vile to ensure that it uses only files that you own (or root owns), which are not writable by other users. Values include:
  none
    disables the check
  current
    checks files in the current directory.
  home
    check files in the home directory in addition those checked for "current".
  startup
    check files in the startup path, as well as those checked for "home".
  always
    like "startup", but also check permissions for datafiles such as tags, menus and help-file.

  The default value is "current". (U)

check-modtime
  Check modification-time. If a file has changed since it was last read or written, vile will issue a "file newer than buffer" warning and prompt appropriately for confirmation when
  1. popping up a window on an existing buffer,
  2. reading or writing the buffer, or
  3. after performing some shell command.

  The prompt will occur only once, unless the file changes again, in which case the warning will be repeated. The warning will be repeated in any case if the file is being written. Invoking a shell, or suspending/restarting vile, will cause all visible buffers (those currently in windows) to have their times checked immediately. A file is considered "changed" if its modification time changes, or, under UNIX, if it is replaced entirely, resulting in a different inode number. (The "unique-buffers" mode must be active to enable the latter behavior.) (B)

cindent (ci)
  C-style indentation. Helps maintain current indentation level automatically during insert, like autoindent, above. See cindent-chars for additional information. Note that when the majormode cmode is in effect, cindent assumes a local buffer mode value of true. (B)
cindent-chars (cic)
  The list of characters interpreted by the cindent mode. These include
  '#'
    when a line starting with '#' is inserted, it is indented to column 1. This is a temporary indent; succeeding lines are indented normally. Also, lines beginning with a '#' will not shift right with the '>>' command.
  ':'
    indent the next line further, e.g., after a label.

  as well as any character that may be listed in fence-pairs. If it is listed in cindent-chars as well, the left-character of a pair causes the next line to be indented more, and the right-character causes the next line to be indented less. (B)

cmode
  C-code mode. A built-in majormode that predefines cindent mode and separate suffix, tab and shiftwidth submodes. The topic "cmode: the original vile builtin majormode" discusses this majormode in more detail. (M)
crypt
  Causes buffer(s) to be decrypted when read, and encrypted when written. This is compatible with the UNIX crypt(1) routines used by vi, and is only available on platforms which have this feature enabled. See the section on "Encryption" for more information. (B)
color-scheme (cs)
  An aggregate of fcolor, bcolor, video-attrs and $palette. Color schemes are defined with the define-color-scheme command. (U)
comment-prefix
  A regular expression denoting the portion of a line that is replicated and untouched, except for leading indentation when doing text formatting. The expression should begin with "^", e.g., the default value ^\s*\(\s*\([#*>]\)\|\(///*\)\)\+ is useful for matching shell comments (#), multi-line C comments (*), multi-line C++ comments (//), and email (>). (B)
comments
  A regular expression defining commented paragraph delimiters. This is used in addition to the "paragraphs" expression (see below) when reformatting a region. The net effect is that paragraphs inside of these comments are preserved when doing text reformatting, but are not reachable with the '}' and '{' motions. A pattern that consists of an empty comment line usually works well. (B)
cursor-tokens
  Controls whether vile uses regular expressions or character classes for parsing tokens from the screen for various commands. This uses an enumeration: both, cclass and regex. If "both", vile tries matching first with the regular expresion, e.g., bufname-expr for $bufname, and if that does not match anything, uses the character-classes. The main reason for providing the "both" option is that the older character-class based parsing for buffer name does not correspond exactly to a regular expression. (B)
dirc
  Causes vile to check each name when scanning directories for filename completion. This is slower, but provides additional information allowing you to distinguish between directory and file names in the prompt. (U)
dos
  On input, if the global copy of this mode is set, then incoming CR/LF pairs are taken as line terminators, the CR characters are stripped out, and the local dos mode is set for the buffer. (Actually, the local dos mode is only set if the majority of lines had CR characters at the end.) If global dos mode is not set, then incoming CR characters will be left visible on the screen (as '^M'), and the local mode will not be set.

  The percent-crlf mode tells vile how many lines in the buffer must have CR/LF endings for it to automatically treat a buffer in this manner.

  On output, when writing a buffer with local dos mode set, all lines will be terminated with CR/LF pairs, rather than the usual single LF.

  When buffers representing non-existent files are created they will inherit the line-style of the operating system (LF-only on UNIX and VMS, CRLF-style on DOS derivatives) regardless of the global setting of dos mode. However, even this can be overridden using the `-u` and `-U` options, which preset the `$system-crlf` variable used to initialize dos mode.

  Setting dos mode makes editing binary files unreliable.

  The global value for this mode is set on by default in DOS versions of vile, and should therefore be turned off if doing binary editing. (B)

errorbells (eb)
  Controls whether a bell sounds (or whether the screen flashes, if "flash" mode is on) when an error occurs. (U)
expand-chars
  Controls the set of characters that are expanded in command lines. These include '%' (the current buffer), '#' (the alternate buffer), '!' (the last shell command) and ':' (the token at the cursor position). For VMS, MS-DOS, OS/2, and Win32 hosts, this is '&'. (U)
expand-path
  Controls whether %/# are expanded to the full pathname of a buffer, or just to its basename (i.e. the name with the path stripped off). (U)
fcolor
  On systems supporting this, will set the foreground color. On most systems, the choice of colors is fixed, although the X11 version (xvile) can be given customized colors at startup or via .Xdefaults. See notes about the color palette down below, under DOS specifics. (U)
fence-begin
fence-end
  Respectively, the regular expressions for balancing simple (character-oriented, non-nestable) fences. (B)
fence-if
fence-elif
fence-else
fence-fi
  Respectively, the regular expressions for balancing line-oriented, nested fences, e.g., as C-preprocessor lines (the default). (B)
fence-limit
  Iteration timeout for complex fences, to limit pathological cases, e.g., with Perl's ambiguous block syntax. (B)
fence-pairs (fences)
  Each pair of characters in this string is taken to be a set of "fences", which should be matched with the '%' command. The default value is "{}()[]", which produces normal vi behavior. This can, for instance, be augmented with the '<' and '>' characters ("{}()[]<>>") to cause angle brackets to be matched as well. See "showmatch" mode for another use of the "fence-pairs" mode. (B)
file-encoding (fk)
  This is the character encoding of the buffer contents, which is not necessarily the same as the display's character encoding. It must be one of the following values:

  >     "8bit"
  >     "ascii"
  >     "auto"
  >     "locale" (default)
  >     "utf-16"
  >     "utf-32"
  >     "utf-8"

  The "auto" setting tells vile to determine the encoding by inspecting the buffer contents. The "locale" setting tells vile to assume that the buffer contents are in the current locale's encoding. The "8bit" setting corresponds to the 8-bit locale support used since 9.3i (20021223). (B)

filename-ic (fic)
  Ignore filename upper/lower case in filename completion. (U)
fillcol (fc)
  Sets the value for the fill column, which is the column at which autowrapping and region formatting will break lines. If zero, use the wrapmargin. If negative, count from the right margin. (B)
filtermsgs (fm)
  A few syntax errors are detected and highlighted by the syntax-highlighting filters. If set, this mode directs vile to write into the [Filter Messages] buffer the associated error messages, which can be used with the error-buffer command to step through the errors. (B)
filtername (fn)
  Specify a syntax-highlighting filter, for a given majormode. This is used in the filters.rc file, to handle special cases where different sets of keywords are applicable to a common syntax, e.g., C, C++ and Java. End users will not typically modify this mode. (B)
find-cfg
  Configures the builtin find feature, which is available on win32 and Unix hosts. For further details, refer to the section of this help file entitled "Working in a project hierarchy". (U)
flash
  If your terminal can, will flash the screen rather than beeping on errors. No audible or visible indication will occur at all if "errorbells" mode is not set on. See also the vtflash mode (described below). (U)
for-buffers (fb)
  specifies whether globbing or regular expressions are used to select buffer names in the for-buffers and kill-buffer commands. (U)

  The choices are

  mixed
    globbing with special exclusion for internal names, i.e., with square brackets
  glob
    the same as filename globbing
  regex
    regular expressions
glob
  Controls how wildcard characters (e.g., '*' and '?') are treated in prompts for filenames. Set glob to 'off' to disable expansion, or to 'on' to use the internal globber. The internal globber will handle *, ?, [a-z] style ranges, environment variables, and the ~user notation for finding home directories.

  On UNIX, glob can be set to be a pipe command that will expand more wildcards. The default value of glob on UNIX is "!echo %s", which should provide globbing that matches that of your shell. If set to a command that will separate filenames with newlines or nulls rather than spaces, then filenames containing spaces may be more easily edited. ("!/bin/ls -d %s" is one possibility, "!glob %s" is another if you use csh.) (U).

highlight (hl)
  When false, syntax highlighting is disabled in the corresponding buffers. This allows you to disable highlighting for all buffers or only certain ones. (B)
history (hi)
  When true (the default), commands from the :-line are logged in a buffer [History]. Turning this off causes the buffer to be removed. (U)
horizscroll (hs)
  If the cursor is moved "off-screen", this mode controls what happens. If set (as it is by default), the whole screen will shift sideways to make the cursor position visible. If not set, then only the current line will shift, which may be desirable on slower displays. (W)
identifier-expr
  Regular expression used for parsing of $identifier, which also corresponds to the pattern under the cursor used in tags and "screen-search-pattern-grab", etc., subject to the cursor-tokens mode. If the expression is inactive, use character-class, e.g., the equivalent of

  >     \<[[:ident:]]\+\>

  This is a buffer mode. (B)

ignorecase (ic)
  Text searches normally match the pattern exactly. With this set, searches are case-insensitive. (B)
ignoresuffix (is)
  Strip the given pattern from a filename before matching it for majormode suffixes. Note well the difference between the mode's name and its behavior. (B)
implybuffer (ib)
  Causes vile to create a buffer when you write to a new file, or read from one (e.g., with ":r"). (U)
insert-exec (ie)
  Tells vile to interpret control characters for movement and undo/redo if they are bound to appropriate functions during insert mode. For example, ^F and ^B would scroll forward and backward. ^A and ^X bindings are honored as well. (U)

  See the discussion of insert mode, in particular

  >     describe-insmode-bindings
  >     describe-insmode-key

keep-position (kp)
  Choose where the cursor will be after making an ex-style command with a range. The mode value must be one of

  >           emacs
  >           nvi
  >           vi

  where "emacs" is used to denote vi-like-emacs. The setting for "vi" matches the behavior of vi on AIX, HPUX and Solaris. Here are some examples to compare, where "top" and "bot" refer to the top/bottom of the range, and "n/c" indicates that the cursor does not move:

  command | vile | nvi | solaris
  --- | --- | --- | ---
  :%> | top | n/c | bot
  :%s/^/ / | bot | bot | bot
  :5,10> | 5 | 10 | 10
  :.,.+5> | n/c | n/c | +5
  :.-5,.+5> | -5 | n/c | +5
  :-5,+5> | -5 | n/c | +5
  :-5,+5s/^/ / | +5 | +5 | +5

  POSIX does not provide details on this behavior. (U)
linebreak (lb)
  When `linewrap` mode is set, add blanks in the display to avoid splitting "words" (any nonblank text). (W)
linewrap (lw)
  Displays lines that are too long to fit on one line as a series of "wrapped" lines. Overrides left/right scrolling controlled by "sideways" and "horizscroll" modes. (W)
list (li)
  The buffer will be displayed with tabs and newlines made visible, instead of as whitespace. (W)
loading
  A flag whose state may display in the mode/status line, used by the capture.pl script to show when asynchronous data is loading. (B)
magic
  Honor unescaped regular expression metacharacters in search strings. See the section "Regular Expressions" for more detail. (B)
maplength
  Controls the maximum length of a :map string, to prevent runaway recursion. This is the total number of characters that can be gotten during a :map expansion; vile pushes characters onto the stack, so this is only a rough measure. (U)
maplonger
  Controls whether the longer or shorter of two "nested" map strings will be favored by the editor. When set, vile will match the longest available mapped string. When reset, (the default) vile will match the shortest available map. For more information, see the section describing the ":map" command, below. (U)
mcolor
  Specify the color of the modelines, normally in reverse video. See also "Setting Extra Colors". (U)
meta-insert-bindings (mib)
  Controls behavior of 8-bit characters during insert. Normally, key-bindings are only operational when in command mode: when in insert mode, all characters are self-inserting. If this mode is on, and a meta-character (i.e. a character with the 8th bit set) is typed which is bound to a function, then that function binding will be honored and executed from within insert mode. Any unbound meta-characters will remain self-inserting. (B)
mini-hilite (mh)
  When user toggles editing mode in the minibuffer (^G, mini-edit), display the minibuffer with the given attribute. These are the same as for visual-matches. (U)
mode-filename (mf)
  A regular expression describing filenames for which the corresponding majormode will be set. The expression is applied only to the portion of the complete pathname after removing the directory name. (M)
mode-pathname (mp)
  A regular expression describing pathnames for which the corresponding majormode will be set. The expression is applied to the complete pathname, in contrast to mode-filename. (M)
modeline
  Controls whether a vi-like modeline feature is enabled. This is a different term than the emacs-like modeline which acts as a status-line for each window. When enabled, vile scans the given number of lines from top and bottom of the buffer when it is first loaded into memory. It looks for lines containing one of these special markers after whitespace:

  >     "vi:"
  >     "vile:"

  or (depending on the configuration):

  >     "xvile:"
  >     "winvile:"

  After that, either a "set" command terminated by a colon, e.g.,

  >     vile:txtmode:

  or one or more mode assignments, treating colons as a whitespace separator, e.g, these are equivalent,

  >     vile:ts=4 nu
  >     vile:ts=4:nu

  The modelines at the top of the buffer are processed first (working forward from the top), then the ones at the bottom (working backward from the end). If the buffer is small enough, the available modelines could overlap; but the program interprets each line at most once.

  This is a buffer mode, enabling its use in majormodes. (B)

modelines
  Controls the number of lines from each end of the buffer to scan for vi-like mode lines. Defaults to 5 (B)
  A regular expression describing pathnames for which the corresponding majormode will be set. (M)
mouse
  for OS/2, enable/disable the mouse in the console-window version.
multibeep
  If a motion command fails, then vile, like vi, will normally sound the bell. Turning this mode off prevents subsequent identical motion failures from also sounding the bell. That is, if you repeat a failed motion many times (e.g. by holding down the backspace key), you only get one beep. (U)
newline (nl)
  The buffer ends with a newline. This is set when reading a buffer. (B)
number (nu)
  All lines in the buffer will be prefixed by their line number. (W)
overlap-matches
  Modifies the highlighting shown by visual-matches to control whether overlapping matches are shown. For some conditions, setting this to false will present a more natural view, e.g., "\a+", which would match sequences of alphabetic characters. In the normal case (show overlap), each time a new match begins vile will toggle the highlighting and produce an irregular effect. (B)
paragraphs
  A regular expression defining where the "next-paragraph" ('}') and "previous-paragraph" ('{') commands will go. (B)
pathname-expr
  Regular expression used for parsing of $pathname, which is expanded by ":" (or "&") in the minibuffer, subject to the cursor-tokens mode. If the expression is inactive, use character-class, e.g., the equivalent of

  >     \<[[:file:]]\+\>

  This is a buffer mode. (B)

percent-autocolor
  Maximum percentage of time during the autocolor interval that is desired to use for coloring the buffers. This helps with very large files, which take more time. If vile uses more time, then it will skip subsequent updates for the buffer, to keep up. When it does this, it sets a local copy of the autocolor buffer mode with the effective interval which is used. If this mode is zero, it is ignored, and vile can use 100% of the interval for autocoloring. (B)
percent-crlf
  Percentage of total lines which must end with CR/LF for vile to automatically convert buffer's recordseparator to crlf, if dos mode is set. (B)
percent-utf8
  Percentage of total characters which contain embedded nulls, making them look like UTF-16 or UTF-32 encodings. If file-encoding is set to "auto", and the match is higher than this threshold, vile will load the buffer data as UTF-8. The default (90) works well for text which is mostly Latin-1; you should set this to a lower value to work with text which does not follow that pattern. (B)
pin-tagstack
  If set, the editor does not change windows when executing tag locate/pop commands. Put another way, all tag push and pop operations are "pinned" to the current window. (U)
popup-choices (pc)
  Must be set to one of the following three values:
  1. "off",
  2. "immediate", or
  3. "delayed"

  When enabled with either "immediate" or "delayed", vile pops up the [Completions] buffer showing choices for filename and command completion in response to a TAB. "immediate" will force the buffer to be popped up immediately if no progress is made in forming a completion. "delayed" will cause vile to wait until TAB is pressed a second time before popping up the completion choices. (U)

popup-msgs (pm)
  When enabled, vile pops up the [Messages] buffer showing the text that was written to the message line. Closing the window clears its content until the next message is written. This is most useful during the debugging of macros, since many messages may appear, each overwriting a previous one. This mode is treated specially during startup; unless the startup file (e.g., .vilerc) sets it, all messages will be popped up, then the mode will be initialized to "false". (U)
preamble (pre)
  A regular expression describing the first line of filenames for which the corresponding majormode will be set. For example, you may have a majormode "sh", with sh-preamble set to "^#\s*!\s*\/.*sh\>" to match the lines "# ! /bin/sh", "#!/bin/csh -f", etc. (M)
printing-low
  The integer value representing the first of the printable set of "high bit" (i.e. 8-bit) characters. Defaults to 0. Most foreign (relative to me!) users would set this to 160, the first printable character in the upper range of the ISO 8859/1 character set. Characters 128-159 are control characters in the ISO scheme (e.g., ISO 8859-1). (U)
printing-high
  The integer value representing the last character of the printable set of "high bit" (i.e. 8-bit) characters. Defaults to 0. Set this to 255 for ISO 8859/1 compatibility. The printing-low and printing-high modes are not necessary if your system supports the locale functions. (U)
reader-policy (rp)
  Control whether buffers are initially read using the fast and/or slow methods. The fast method uses less memory, but in cases where there is little free memory, or the heap is fragmented, the slow method may work. However, the slow method is much slower. This mode defaults to "both", which means that the quick method is tried first, and if it fails to allocate the large chunks needed for the buffer, it will retry using the slow (small chunk) method. Set to "fast" to use only the fast method, and to "slow" for only the slow method. (U)
readonly (ro)
  Prevent writing a buffer to its associated file. Unlike "view" mode (see below) which prevents any modifications to a buffer, this mode allows changes, but prevents updates. This is set automatically for the output of shell commands and pipes. (B)
readonly-on-readonly (roro)
  Causes "readonly" mode to be set for read-only files. Normally vile will attempt to write files whether the operating system will allow it or not. This mode should be turned on to truly mimic vi's default behavior. (U)
recordseparator (rs)
  Specify format of files that vile reads and writes. Formats are
  - "auto" (to choose between lf and crlf, override dos mode)
  - "lf" (for Unix),
  - "crlf" (for DOS),
  - "cr" (for Macintosh, overridden by dos mode)
  - and "default" (lf or crlf, depending on the platform).

  When reading from a file, vile can determine the file format automatically, and set a local value for this mode. When reading from a pipe, it uses the global value of recordseparator to decide how to split lines. Files created within vile do not automatically have a local recordseparator mode; they inherit the global mode setting. The commands

  >     set-rs-cr
  >     set-rs-lf or set-unix-mode
  >     set-rs-crlf or set-dos-mode

  are aliases which set the corresponding local mode values of recordseparator. Set the recordseparator on a given buffer to control how it is written. (B)

norectangle-insert-mode (rim)
  Insert, rather than overstrike, change changing text in a rectange. (B)
remap
  Controls whether :map or :map! sequences entered with no explicit remapping control should be subject to remapping (i.e. recursive mapping). (U)
remapfirst
  Controls whether the first character of a map expanded due to :map or :map! is eligible for remapping. This is off by default for vi compatibility. (U)
report
  A threshold value that is used to control messages that report the number of lines deleted, changed, etc. Set it to 0 (zero) to disable the messages. (U)
resolve-links
  Controls whether vile fully resolves file names in cases where some path components are symbolic links. This makes vile smarter about symbolic links that provide multiple paths to a given file, and ensures that files are always represented in vile by their "true" names. (This can prevent multiple unintentional edits of the same physical file via different pathnames – but see also "unique-buffers", below.) It may trigger long timeouts on systems where symbolic links are used in conjunction with NFS automounted directories. (Note that this does not detect or prevent multiple edits caused by hard file links – only symbolic ones.) (U)
reuse-position
  Like the animated mode, restore the position in a scratch buffer when recreating it. This is useful for closely related commands such as show-printable and show-wide-printable that use the same scratch buffer name.
ruler
  Shows the current line and column in the status line, as well as what percentage of the current buffer's lines lie in front of the cursor. (This percentage is different than that given by ^G (the "position" function), which gives a percentage of characters rather than lines.) (B)
samebangs (sb)
  Controls whether the ":!!" and "^X-!" commands remember the same command string. (U)
sections
  A regular expression defining where the "next-section" (']') and "previous-section" ('[') commands will go. (B)
sentences
  A regular expression defining where the "next-sentence" (')') and "previous-sentence" ('(') commands will go. (B)
shiftwidth (sw)
  This is much like a tabstop, except that it is independent of hardware tabs and tab characters. It is the number of columns a line will shift by if the '<<' or '>>' commands are used, and it chooses the next column stop for the cursor if a '^T' or '^D' is typed during insert mode. Note that when the majormode cmode is enabled, shiftwidth assumes the local buffer mode value of 8. (B)
showchar (sc)
  Controls whether the modeline can show the %C formatted character at the current editing position. This is overridden by the ruler mode, to save space on the modeline (W).
showformat (sf)
  Controls when/whether recordseparator information is shown in the status line. Values are "always", "differs" to show when the local mode differs from the global, "local" to show whenever a local mode is set, "foreign" to show when the recordseparator differs from the native default and "never". On Unix, the native recordseparator is a line-feed, on DOS it is carriage-return/line-feed. (B)
showmatch (sm)
  During insert, if a closing "fence" character (usually '}', ']', or ')', but may be changed by setting "fence-pairs") is typed, the cursor will highlight the matching member of the pair for about a quarter second. (B)
showmode (smd)
  Causes an indicator on the modeline to indicate what mode vile is currently in: insert (I), replace (R), or command (none). (B)
showram (sr)
  Displays the amount of ram currently allocated at the end of the message line. (not in all versions) (U)
showvariables (sv)
  If set, causes the [Variables] buffer which is created by the "show-variables" command to be updated each time the screen is updated. (W)
sideways
  Will prompt for a new value for the sideways scroll offset, which allow display of a section of code normally off the screen to the right. Also affected by the ^X-^R and ^X-^L commands. (W)
smoothscroll (ss)
  Force smooth scrolling. By default, this option is turned off so that vile will try to keep up with your keystrokes instead of keeping the display up to date. Some keyboards repeat faster than the screen can keep up causing the screen to jump. If this bothers you, set smoothscroll to true. Warning: If your keyboard repeats really fast and you have smoothscroll enabled, it may take a while for vile to catch up. (U)
spaces-after-sentence (sas)
  Insert two spaces after each sentence when formatting a paragraph. By default this option is turned on. When disabled, the format routine will insert only one space after each sentence. (B)
suffixes (suf)
  A regular expression describing filename suffixes for which the corresponding majormode will be set. The expression is applied only to the portion of the filename beginning with the first ".". If more than one of mode-pathname, mode-filename and suffixes are given, they are tested in this order. (M)
swap-title
  For xvile/winvile, if set, the editor displays its title as:

  >     <current buffer name> - <editor name>

  The swapped order is especially useful under limited screen real estate conditions. (U)

tabinsert (ti)
  Allow the physical insertion of tab characters into the buffer. If turned off ("notabinsert"), and an attempt is made to insert a tab character by explicitly typing it or by using shiftwidth or the line shifting commands, then the appropriate number of space characters will be inserted instead. Use '^V^I' to insert a real tab, and remember that pre-existing tabs will not be affected. Use the '^A-<SP>' operator command to eliminate pre-existing tabs from a region of text. (B)
tabstop (ts)
  Set the value for spacing of normal tabstops. Note that when the majormode cmode is enabled, tabstop assumes the local buffer mode value of 8. (B)
tagignorecase (tc)
  Causes tag searches to be done ignoring upper and lower case. (B)
taglength (tl)
  Sets the significant length for tags. If non-zero, lookups for names longer than the taglength value will only attempt to match that many characters. If a lookup is for a shorter pattern, or the value of taglength is zero, then the tags must match the lookup pattern exactly. This will not effect tags picked up from the cursor – they are always matched exactly. (B)
tagrelative (tr)
  Causes files looked up via the tags mechanism to be found relative to the location of the tags file, rather than relative to the current directory. This allows the same tags file to be useful from different locations, while not requiring absolute filenames. For example, using `set tags "tags ../tags"' would allow a single tags file (located in the parent) to be used in a small source hierarchy from either the parent or a child directory. (B)
tags
  Gives a path of names of file(s) in which to look up tag references. It is a whitespace-separated list of filenames. Relative pathnames in this list are evaluated with respect to the current directory of vile at the time of the tags lookup. (B)
tagword (tw)
  When scanning the word to lookup from the cursor position for the tags mechanism, grab the whole word rather than the substring starting at the cursor position. The latter, which is vi-like, is the default. (B)
terse
  vile produces more "status" messages than vi, which may become annoying at low baud rates. Setting terse mode will suppress many of these. (B)
terse-selections (tsel)
  Boolean indicating whether or not additional information is displayed about a selection. When false, the starting and ending positions of the selection are displayed as the selection is extended. The default is true. (W)
timeoutlen
  How long to wait for the characters of a :map'd sequence. Typically needed to resolve the ambiguity between a user-pressed ESCape key and an ESC character that is part of a function key sequence. vile will wait for "timeoutlen" milliseconds after seeing an ESC, in order to check the next character of input. The time defaults to 500, or half a second. Users of fast local screens, like a local xterm, may wish to reduce this to something like 50 for crisper response to a user-pressed ESC. (U)
timeoutlen-user
  If set non-zero, this will enforce a maximum waiting time for characters in a user-defined :map sequence. If zero, the value of timeoutlen, above, will be used for both "system" and user sequences. It is likely that a short time is desired for system sequences, and a long time for user sequences. For this reason the default value of timeoutlen-user is 60000. This will give a full minute to type each character of a user-defined :map. Be careful – extremely large values may overflow the word size on smaller machines, i.e, you will probably want to avoid setting timeoutlen-user larger than 65535. (U)
undo-dos-trim (udt)
  Controls whether trimming of carriage returns and control/Z done when converting between Unix and DOS line endings is undoable.
undoable (ua)
  Controls whether changes are saved on the undo stack. This is normally enabled, but you may wish to disable it to reduce memory overhead when filtering very large files. (B)
undolimit (ul)
  Sets a limit on how many undoable buffer-changing commands will be saved. If set to 0, there is no limit, and all changes are undoable. The default value is 10. (B)
unicode-as-hex (uh)
  If displaying a buffer whose file-encoding says it is one of the Unicode flavors, e.g., "utf-8", "utf-16" or "utf-32", show the values that are non-ASCII in "\uXXXX" format even if the display is capable of showing these as regular characters. (W)
unique-buffers
  When vile is asked to read a file into a buffer, it will first check to be sure that it doesn't already have a copy of that file, by the same or a different name. This can prevent multiple unintentional edits of a file which appears twice in the filesystem due to hard or soft links. On UNIX systems vile uses the combination of filesystem device and inode to check for uniqueness. vile will represent the file by the first name used to refer to it. Note that unless "check-modtime" is also set, a file with more than one name which is edited and then replaced on disk without the knowledge of the editor may still be edited twice. Setting this mode may be a no-op on non-UNIX systems. (U)
unprintable-as-octal (uo)
  If an 8-bit character is non-printing, it will normally be displayed in hexadecimal. This setting will force octal display. Non-printing characters whose 8th bit is not set are always displayed in control character (e.g. '^C') notation. (W)
video-attrs
  Overlay all text with the given attribute: bold, italic, reverse, underline or none. (U)
view
  View the file only. No changes are permitted. (B)
view-on-readonly (viewro)
  Causes "view" mode to be set for read-only files. (U)
visual-matches
  When a search command is executed, the cursor will move as usual. In addition, all matching occurrences of the searched-for pattern (in the current buffer) will be emphasized according to the value of this mode: "none", "underline", "bold", "italic", or "reverse". Additionally, on systems which support color, this mode may be used to set the text foreground color using any of the color values.

  The '=' command can be used to clear this sort of highlighting, until the next search is done for a different pattern. Note that setting this mode can significantly slow down the editor's operation when complex or frequently occurring patterns are used, since vile will need to scan the entire buffer for matches on any change to the buffer. (B)

vtflash
  If your terminal does not support a visual flash feature, but does support the DECSCNM control sequences that toggle normal/inverse screen video (a feature available with vt100 and later terminals), then a visual bell effect may be achieved using this mode.

  Mode Value | Mode Semantics
  --- | ---
  off | feature disabled (default)
  reverse | on err -> switch screen to normal then reverse video.
  normal | on err -> switch screen to reverse then normal video.

  As is true with "flash" mode, no audible or visible indication will occur at all if "errorbells" mode is not set on. (U)

warn-blanks
  When prompted for a filename, vile normally allows you to use leading and trailing blanks and other nonprinting characters. Set this mode if you prefer to be prompted. Vile will then prompt you if you want the nonprinting characters to be stripped from the given filename. (U)
warn-rename
  When using ":e" to find a file that has the same name as another buffer, vile will normally offer for you to edit the proposed alternate name for the buffer constructed by adding a "-1", "-2", etc. to the end of the name. Turning off "warn-rename" will make vile choose buffer names without user intervention. (U)
warn-reread
  When using ":e!" to reread a buffer from the file on disk, vile will normally warn you that you are about to clobber a modified buffer. Turning off "warn-reread" mode will make vile assume you know what you are doing. (U)
warn-unread
  When leaving the editor, if not all buffers have been "visited", then normally vile will complain, and remind the user to use ":q!". Turning off "warn-unread" mode will suppress this behavior. (U)
working
  If turned off (noworking), will suppress the activity indicator ("working..."/"...working") which appears during long-running operations. (U)
wrapmargin (wm)
  Implements vi's auto-wrap mode. vile computes the effective margin from the mode's value:
  - if positive, the wrapmargin specifies the number of columns on the screen's right margin to reserve before breaking the input lines on a preceding space.
  - if negative, vile counts from the left margin.
  - if zero (default), this mode is inactive.

  A value of 5 and an 80 column screen will result in 75 character lines. This mode is different from the "wrapwords" mode (below) which uses the "fillcol" setting as its target column. The two modes probably should not both be used at once. (B)

wrapscan (ws)
  Text searches will continue from past the bottom of the file to the top, and vice-versa. (B)
wrapwords (ww)
  Similar to, but different from, vi's auto-wrap mode (i.e. "wrapmargin"). While inserting, words are moved to the next line if the current line gets too long. Wrapping is only attempted when a space is typed. The target maximum width of lines is changed with the "fillcol" setting. (B)
xterm-fkeys
  Support xterm's modified function keys by generating system bindings for the shift-, control-, alt-modifiers of each function key listed in the terminal description.
xterm-mouse
  Enables mouse-clicking if you are running within an xterm. That is, it allows vile to receive mouse events. Since this mode overrides xterm's cut & paste, you will need to use the Shift key when pressing the mouse buttons to cut and paste between X windows. Your TERM variable's termcap entry should contain the string "xterm" for this to work. (U)
xterm-title
  Enables titlebar updates if you are running within an xterm. Each time you switch to a different buffer, vile can update the title. This uses the same tests of the TERM variable as the xterm-mouse mode. (U)
yankmotion (ym)
  Yanking text will cause cursor movement (just like vi) if the motion is left or up. (B)

## 8-Bit Operation

vile allows input, manipulation, and display of all 256 possible byte-wide characters. Wide characters are supported, depending on the device type and your locale settings.

### Output

By default, 8-bit characters with the high bit set (decimal value 128 or greater) will display as hexadecimal (or octal; see "unprintable-as-octal" above) sequences, e.g. \xA5. A range of characters which should display as themselves (that is, characters understood by the user's display terminal) may be given using the "printing-low" and "printing-high" settings (see above). Useful values for these settings are 160 and 255, which correspond to the printable range of the ISO-Latin-1 character set.

If your locale (e.g., the LANG or LC_CTYPE environment variable on a POSIX platform) is configured properly, the "printing-low" and "printing-high" settings are not needed. vile initializes its character type tables based on the system. You can make finer adjustments to those tables as described in "Character Classes".

If your terminal (and locale) are set up to support UTF-8, vile can display files which use that encoding. It can also display UTF-16 and UTF-32 files using UTF-8. When the terminal/locale do not support UTF-8 vile displays the wide characters as hexadecimal codes, e.g., \u1234. Even when vile can display wide characters, you can force it to display the hexadecimal codes with the "unicode-as-hex" mode.

See UTF-8 Support versus Driver in config.doc for an overview of the terminal drivers.

If your terminal and locale are not set up to support UTF-8, vile displays UTF-8 codes that would map to Latin-1 (8-bit) values with a "\?" rather than "\x" prefix, to distinguish them from ordinary 8-bit values. It will also display this form for bytes found in UTF-8 files that cannot be decoded as UTF-8.

### Input

There are basically three ways of getting 8-bit characters into a vile buffer:

Directly –
  if the user's input device (i.e. the terminal or xterm) can generate all characters, and if the terminal settings are such that these characters pass through unmolested, then vile will happily incorporate them into the user's text, or act on them if they are bound to functions. On an xterm, try "stty cs8 -parenb -istrip". Real serial lines may take more convincing, at both ends, but use that stty command as a starting point.

  If you start vile in a locale that uses UTF-8 encoding, vile will check if there is a corresponding 8-bit encoding by stripping the UTF-8 suffix from the locale name, e.g., "en_US.UTF-8" to "en_US". When reading characters from the keyboard, it will map 8-bit codes to the 8-bit locale when editing a buffer whose file-encoding is "8bit" or "ascii".

As numbers –
  the ^V prefix (or, more correctly, the key bound to the "quote-next-character" function), if followed by up to three digits, will insert a character whose value is that number (no greater than 255) into the buffer. The number may be entered in
  - decimal (^VNNN),
  - octal with a leading '0' (^V0NNN) or
  - hexadecimal with a leading 'x' (^VxNN).

  Wide (Unicode) values can be entered in a similar fashion, though they are stored as more than one byte:

  - Unicode hexadecimal with a leading 'u' (^VuNNNN).
  - Unicode decimal with a leading 'U' (^VuNNNN).

  If the current buffer's "file-encoding" mode is set to one of the Unicode flavors (utf-8, utf-16 or utf-32), vile will display the value as a wide character. Otherwise it will show the bytes of the corresponding UTF-8 encoding.

As digraphs –
  Perhaps more useful to some people is using a set of ":map!" commands to aid insertion of 8-bit text. The file "digraphs.rc" distributed with the vile source contains a set of mappings which should aid the input of ISO 8859/1 text. As examples, the mappings in digraphs.rc allow one to type ^KU" or ^Ku" to get an umlaut character, ^K12 to get the little '1/2' symbol, ^KY- to get the Yen currency symbol, or ^K:- to get an arithmetic division symbol.

Users who have no need to enter 8-bit text may want access to the meta-bound functions while in insert mode as well as command mode. The mode "meta-insert-bindings" controls whether functions bound to meta- keys (characters with the high bit set) are executed only in command mode, or in both command and insert modes. In either case, if a character is not bound to a function, then it will be self-inserting when in insert mode. (To bind to a meta key in the .vilerc file, one may specify it as itself, or in hexadecimal or octal, or with the shorthand 'M-c' where c is the corresponding character without the high bit set.

(Although it is possible to edit and view all 256 characters, it is currently impossible to search for a string that contains the NULL character, since this is used internally to terminate the search string.)

## Command History

You may scroll through the list of previous replies to the :-prompt by using the up- or down-arrow special keys on your keyboard (if your configuration supports it).

Vile prompts for commands in parts, and stores a copy of the complete command in the [History] buffer. For example, you may type

>     :g/help/p

and vile will prompt for the parts after each delimiter, e.g.,

>     global pattern: help
>     action to perform on each matching line: p

The [History] buffer, shown with "show-history" will store

>     g/help/p

At each prompt, using the up/down arrows will tell vile to display the corresponding result for the "same" command. If [History] contains

>     g/take/g
>     g/help/p

then the up/down arrows will show "take" or "help", skipping commands which do not begin with "g/".

## Editing the Minibuffer

The minibuffer (i.e., the last line on the screen, aka the :-prompt) can be edited using arrow keys, the delete character, or by toggling to vi-mode with the ^G (mini-edit) character. In mini-edit mode, you may use commands that do not move the cursor to a different line, as well as the following editing commands: i, a, I, A.

Vile treats the minibuffer specially. Completed lines are written to the history buffer. When scrolling up/down in the command history, vile displays the data that correspond to the command which you have entered, e.g., a :set command will display the variables entered for preceding :set commands.

## Special Character Expansion

As in vi, the % and # characters typed while responding to a prompt will expand to the current or "alternate" filename.

Also as in vi, the ~ character will expand to be the previous replacement pattern when entering either a replacement or search pattern,

In addition, the colon character (":") expands at most prompts to be the identifier name under the cursor.

Expansion of ! to the last command run is implemented, but only when a shell command is being entered.

Any of these expansions can be suppressed by prefixing with a '\'.

## Character Classes

The "show-printable" command shows a table of the characters and their classes, e.g., printable, punctuation, etc.

You may modify the characters in (or corresponding to) the narrow local in this table by setting or unsetting a given class for a range of characters. The commands which do this are "set-char-class" and "delete-char-class" or "unset-char-class".

These commands expect the class name and a regular expression which defines a range of characters. The class names (short to allow "show-printable" to show everything in 80 columns) are

Short | Long Description
--- | ---
arg | ex-style line range: 1,$ or 13,15 or % etc.
ctl | [:cntrl:] control character
del | delete/backspace
fn | fence character, e.g., "{" or "}"
id | [:ident:] normal identifier, used for word boundaries
lwr | [:lower:] lowercase, e.g., "a"
nsp | [:graph:] nonspace
num | [:digit:] digit, e.g., "0"
path | [:file:] file/path name
prn | [:print:] printable
pun | [:punct:] punctuation
qid | qualified identifiers, used in tags parsing
sh | may appear in shell/pipe
sp | [:blank:] space
tmp | legal in scratch-buffer names
upr | [:upper:] uppercase, e.g., "A"
wld | shell wildcard, e.g., "*"

You can also reset the table to its initial state using "reset-char-classes".

## Key Rebinding

There is a key rebinding facility (if vile is built to include it), which is invoked as follows. One must know the "english" name for the command being rebound. Use ":show-commands" or ":apropos string" to find english names containing "string". Then use the command:

> :bind-key <englishname> <keyseq>

where keyseq is the exact keyboard sequence (i.e. single character, or '^X', '^A', or '#' followed by a single character) to which the command should be bound. In a .vilerc file, keyseq can be either the literal sequence, or the printable representation of the sequence, e.g. ^A-a or ^X-S. (A summary of how key-sequences can be represented appears at the end of this section.)

For configurations that permit it (X and win32, not termcap/terminfo), you may also specify a key modifier, i.e., "alt+", "ctrl+" or "shift+". The modifier follows the ^A or ^X prefix, e.g.,

>     shift+#6

for shifted function-key 6.

Commands can also be bound to meta keys, which are regular ASCII characters with the eighth bit (0x80) bit set. The "printable" form for these keys is 'M-c'.

Commands bound to '#-c' or 'FN-c' key sequences are usually also available by using the function keys on the terminal. Thus the up-arrow function key can be bound to as '#-A' or 'FN-A'. Use show-key-names to see a complete list of these key sequences.

Even the ^A and ^X prefix characters can be rebound, using the dummy functions "cntl_a-prefix" and "cntl_x-prefix", and the '#' key itself can be rebound – it is represented by the command name "function-prefix".

Examples: To cause the / and ? commands to perform incremental searches, use:

> bind-key incremental-search /
> bind-key reverse-incremental-search ?

To make ^N and ^P switch windows instead of cause motion by lines, try:

> bind-key next-window ^N
> bind-key previous-window ^P

To cause the space bar to move forward by pages, as in the "more" command, use:

> bind-key next-page \s

(Space and tab can be represented with: "\s" and "\t".)

Note that when interactive, ^A and ^X are typed using the control key. In a file, however, they can be either a caret (^) followed by a letter, or the literal control key. In the latter case you would not use the '-' separator. So ^A-x as four distinct characters could also be entered as ^Ax, which would only be two characters.

Characters can be entered in hexadecimal or octal as well, in the form 0xNN, where NN is exactly two hexadecimal digits. If you know the hexadecimal value for a key, you can bind to it like:

> bind-key next-window ^A-\x14

or

> bind-key next-window #-\213

The sequence 'M-', represents a "meta-key", or a "meta" character. It is equivalent to setting the high bit of the following character, so 'M-e' is has the value of (0x80|0x65), or 0xe5.

### Insert mode:

Function and meta-key bindings are available in insert mode, as well as in command mode. (But only via either the "meta bit" or 'FN' sequence form – the '#' prefix will not work in insert mode.) There are four key binding tables:

default –
  for commands in screen mode as well as those that do not fit naturally into one of the specialized modes. This is initialized by compiled-in definitions for normal (0-127) and special (function and meta-key) definitions.

  >     bind-key
  >     describe-all-keys
  >     describe-bindings
  >     describe-key
  >     unbind-key

cmdmode -
  for command editing. This is initialized with the special keys from the default table, as well as the control characters that are associated with movement, e.g., ^N and ^P.

  >     bind-cmdmode-key
  >     describe-all-cmdmode-keys
  >     describe-cmdmode-key
  >     show-cmdmode-bindings
  >     unbind-cmdmode-key

insmode -
  for insertion. This is initialized with the special keys from the default table, as well as the control characters that are associated with movement, e.g., ^N and ^P. The insert-exec mode controls whether those control characters are interpreted or inserted.

  >     bind-insmode-key
  >     describe-all-insmode-keys
  >     describe-insmode-bindings
  >     describe-insmode-key
  >     unbind-insmode-key

selmode -
  for selection highlighting, i.e., multimotion. This is initially the same as the default binding table, but may be customized.

  >     bind-selmode-key
  >     describe-all-selmode-keys
  >     describe-selmode-bindings
  >     describe-selmode-key
  >     unbind-selmode-key

The "describe-all-*keys" commands differ from the display-commands in each group. They show for each of the 256 character codes which normal (unmodified) or ^A/^X (modified) keys are bound to a given function. Use a repeat count before those commands to show data for all 256 codes.

The following macro will work correctly in both command and insert modes. Note that you must specify the insert mode (insmode) binding separately; default bindings are not inherited automatically because they may conflict with the bindings used for exiting or modifying text within insert mode.

> store-procedure begin-errtext
> insert-string "fprintf(stderr, \""
> set-named-mark z
> insert-string "\\n\");\n"
> goto-named-mark-exact z
> ; enter insert mode if we weren't already there
> ~if &seq $mode "command"
> insert-chars
> ~endif
> ~endm
> ; bind to function key 5
> bind-key begin-errtext FN-5
> bind-insmode-key begin-errtext FN-5
> ; also bind to meta-A
> bind-key begin-errtext M-A
> bind-insmode-key begin-errtext M-A

Actually the "meta-insert-bindings" setting controls whether meta- keys will have their bound effect when in insert mode. If this setting is not on (or if the meta-key is not bound to any function) then the key's value will simply be inserted into the buffer.

### Syntax for key-sequences:

To summarize, a key-sequence being bound to is specified with:

1. an optional prefix, like this:

   ^A- (three chars)
   ^X- (three chars)
   ^A (one char)
   ^X (one char)

2. followed by an optional "function" prefix:

   #- (two chars) or
   FN- (three chars)

3. followed by an optional "meta" prefix:

   M- (two chars)
   (this is the same as with specifying a character in that has the high bit set)

4. followed by a character, like this:

   C (one char)
   ^C (one char)
   ^C (two chars)
   \NNN (max of four chars, where NNN are octal digits)
   \xNN (max of four chars, where NN are hex digits)
   \n,\r,\t,\b,\f,\a (two chars each, usual meanings)
   \e (two chars, means ESC)
   \s (two chars, means SPACE)

(The "one char" control character entries in the above table are represented in this help file as two printable characters, to ensure they are not deleted by mailers or file transfer programs.)

### Function Keys

When you bind to a function key, you will see its value printed as a 'poundsign' sequence. And, if you wish to :map a function key, you will need to use its poundsign sequence. This is explained more fully below.

The list of function key labels, along with their "vile name", are as follows:

Usual Label | Vile name | Usual Label | Vile name
--- | --- | --- | ---
Up-arrow | #A | Home | #H
Down-arrow | #B | End | #E
Left-arrow | #D | Insert | #i
Right-arrow | #C | Delete | #d
Prior (PageUp) | #p | Find | #f
Next (PageDown) | #n | Select | #s
Help | #? | Menu | #m
F1 | #1 | F12 | #@
F2 | #2 | F13 | ##
F3 | #3 | F14 | #$
F4 | #4 | F15 | #%
F5 | #5 | F16 | #^
F6 | #6 | F17 | #&
F7 | #7 | F18 | #*
F8 | #8 | F19 | #(
F9 | #9 | F20 | #)
F10 | #0 | F11 | #!
KeyPad_F1 | #P | KeyPad_F3 | #R
KeyPad_F2 | #Q | KeyPad_F4 | #S

In addition, #M, #t, and #T are used internally to support mouse operations in an xterm. To undo the relationship between a "system-defined" function key and the poundsign sequence it produces, use ":unmap-system-chars".

### :map, :map!, :noremap, :noremap!

The vi "map" and "map!" commands are implemented in vile. As in vi, mapping works best if the character sequence being bound corresponds to pressing a single key. Multiple key sequences will work as long as the next key in the sequence is pressed within a specified number of milliseconds. The value of "timeoutlen" is used for system-defined character sequences, i.e. function keys. User defined sequences will use this too, unless the value of "timeoutlen-user" is non-zero, in which case this value will be used instead.

Because "map" and "map!" may be used to remap arbitrary sequences, these sequences must be entered literally, i.e, the syntax for key sequences as listed above will not work for "map" and "map!". To enter control characters into a .vilerc file, use the ^V escaping mechanism. A map command entered from the command line will require fewer characters be escaped with ^V.

To provide a relatively portable way of specifying function key mappings, vile will reapply mapping to the result of a system- defined map. System function keys are mapped to "poundsign" sequences, like '#1' for function key 1, and '#B' for the down-arrow key. The remapping allows one to put

> map #1 <some-user-map-sequence>

in the .vilerc file, and have the user-sequence executed when the system F1 key is pressed. (Otherwise the terminal-specific sequence would have to appear in the .vilerc.) See the section on "Function Keys" above for a full list.

The "remap" option controls whether the successfully mapped result of a map is reevaluated for more mapping matches. The "noremap" (and "noremap!") variants of the map commands will force that particular mapping to be applied without subsequent remapping, regardless of the current setting of the global "remap" setting.

Since key sequences starting the '^X', '^A', or '#' prefixes are normally expected to act as a unit, no remapping is done on characters that follow such prefixes. For instance, this keeps a map like:

> :map h ihello<ESC>

from breaking the '^X-h' command.

Long running loops caused by recursive :map definitions are detected and assumed to be infinite. When such a loop is detected, execution is aborted. Turning off the "remap" option, or doing some of the maps with the ":noremap/:noremap!" form of the map commands will eliminate most such loops.

vile normally duplicates real vi's behavior (but not vim's) in that the first character of the sequence being mapped to is not subject to recursive (map) evaluation. Assuming "remap" is on, pressing 'j' when ":map j jh" is in effect will not cause an infinite loop, whereas ":map j hj" will cause such a loop. Setting the "remapfirst" option will allow this sort of remapping (and will cause an infinite loops for both examples).

The "maplonger" option controls whether the longer or shorter of two "nested" map strings will be favored by the editor. That is, if both "foo" and "foobar" are mapped (to presumably different values), then with "maplonger" set, vile will not expand "foo" until it is sure (either because the next character is not 'b', or a timeout has expired) that "foobar" will not be seen. Real vi will always expand "foo" immediately, and this is the default behavior. Though not particularly recommended, the "maplonger" mechanism even permits the following types of mappings:

> :map z j
> :map zz k

When 'z' is pressed by itself it will cause vile to move down one line (assuming j has not been rebound or remapped). But if 'z' is pressed twice rapidly (enough) in succession, vile will move to the previous line.

The left hand side of a map[!] definition may contain the usual backslash escapes: \n, \r, \t, \b, \f, \a (^G), \e (ESC), \s (SPACE), \xNN (hexadecimal), \NNN (octal). The right hand side is taken exactly literally, so special characters must be expressed as themselves.

The current set of mappings or "map!"ings may be viewed with the commands ":map<cr>" (or ":show-mapped-chars") or ":map!<cr>" (or ":show-mapped!-chars").

The system-defined maps, representing the function keys, may be shown with ":show-system-mapped-chars".

To undo a mapping, use "unmap", "unmap!", or "unmap-system-chars".

### :abbr

The "abbr" command is also present in vile. It is similar to, but slightly different than, "map!". Whereas "map!" examines characters as they are typed, continuously looking for a match against the stored translation strings, the "abbr" command examines them after they are already in the buffer, and is more sensitive to their surrounding context.

First, abbreviations are never expanded unless followed by non-"word" characters. In addition, abbreviations which begin like a "word" (i.e. with letters, digits, or the '_' character) are not expanded if they immediately follow another "word" character – they must follow whitespace or punctuation or the beginning of the line. Likewise, abbreviations that begin with a punctuation character are not detected within more punctuation – they must follow whitespace or a "word", or the beginning of the line.

If the "backspacelimit" setting is set (and it is, by default), then characters not inserted during the current insertion command are not considered in the above comparisons – the start of the current insertion behaves much like the beginning of line in that case.

Abbreviations are never recursive.

vile is more lenient than vi regarding what is a valid abbreviation. vi insists that an abbreviation be all "word" characters, or be all "non-word" characters, except for the last character, which must be a "word" character. vile allows anything at all to be abbreviated, only enforcing the expansion rules mentioned above.

To undo an abbreviation, use "unabbreviate".

## Special "Terminal" Key Rebinding

In addition to the above binding mechanism for vile commands, other keystrokes to the editor are rebindable using the "set-terminal" command. These keystrokes are mostly derived directly from the user's tty settings on entering the editor, but there are a couple of additions related to command and filename completion.

The values of these characters can be shown with the "show-terminal" command, and can be changed with the "set-terminal" command.

Name | Default value | Typical value
--- | --- | ---
backspace | from tty settings | (DEL or ^H)
interrupt | from tty settings | (^C or DEL)
line-kill | from tty settings | (^U or @)
mini-edit | (^G)
name-complete | <tab>
quote-next | from tty settings | (^V)
start-output | from tty settings | (^Q)
stop-output | from tty settings | (^S)
suspend | from tty settings | (^Z)
test-completions | ?
word-kill | from tty settings | (^W)

## Flow-control

Historically, the flow of data between the computing host and the user's terminal was throttled through the use of special characters in the input stream, known as XON and XOFF (whose values are ^Q and ^S respectively). Most modern systems do not need these characters, and regulate the flow in an "out-of-band" manner. The terminal device driver, however, is usually still set up with software flow control enabled, to allow the user to manually start and stop output with the ^S and ^Q characters.

vile normally resets the driver to allow the ^S and ^Q characters to be bound to commands, since most systems no longer need software flow control, and since there is usually no reason for a user to wish to suspend output when running vile. Some older devices (usually older slower terminals), however, still need to be able to automatically control the data flow by generating ^S/^Q without the user's intervention.

To accommodate these situations, the "flow-control-enable" command will reset the terminal driver to its original state. Software flow-control will be re-enabled, and commands bound only to the ^S and ^Q characters will be inaccessible. The characters affected in this way may be seen with the "show-terminal-chars" command, where they will appear as the "start/stop-output" characters. The action of the "flow-control-enable" command will be reversed if it is given any argument.

## Recorded macros

The first type of macro in vile is for temporary, quick macro usage, and lets you record a set of keystrokes as you execute vile commands. You can then replay those keystrokes with a single key.

^X-(
^X-)
  Begin or end the recording a keyboard macro. The keystrokes you type are recorded. For compatibility with previous versions of vile (where separate commands were necessary), these two commands are now both bound to the same function. The start/stop capability is now a toggle, and requires only one command.
^X-&
  Execute the keyboard macro.
^X-^
  Copy recorded keyboard macro to a named register, for saving, or for execution using '@a', as below. (Type "a^X^, where "a means yank into register-a)

The vi '@' command is present as well, and can be used to execute the contents of a named register as if it were entered at the keyboard. To make this more useful, the "load-register" command will allow preloading a named register, from .vilerc file. For example:

> use-register a load-register ihello^[

will load register 'a' with a command to insert the word "hello". (The ^[ should be a real ESC character, entered by preceding it with ^V.) A better example, is this:

> use-register w load-register ":!chmod +w %^M:w^M"

which makes the current file writable and writes it. (Again, use ^V to get the CR characters into the .vilerc file.)

## Programmed procedures (aka macros)

[ Note 1: the information presented in this section of the help file is a subset of "doc/macros.doc", which is supplied with the vile source code. macros.doc is the authoritative reference manual for the editor's macro language.

Note 2: the language features/directives described below are not limited solely to use within macros. These directives are often used within a startup/command file to configure the editor, load registers, etc. ]

vile can also be extended by defining macros and optionally binding the execution of those macros to key sequences. For instance, if the following lines appear in a .vilerc file:

> 1 store-macro
> 5 delete-til next-word
> ~endm
> bind-key execute-macro-1 ^A-1

then when ^A-1 is executed, 5 words will be deleted. The "-til" suffix on an englishname denotes that it is a vi operator style command, and expects to be followed by a motion command. Also,

> 1 store-macro
> 5 delete-til lines
> ~endm

would be the equivalent of "5dd" since the word "lines" represents the stuttered 'dd' style of operation. More examples are given throughout this help file.

Macros come in two flavors: named and numbered. The syntax and advantages of each format are discussed next.

### Numbered macros

The numbered macro syntax looks like so:

> <number> store-macro
> <language element>
> ...
> <language element>
> ~endm

A numbered macro is executed using this command:

> execute-macro-<number>

To bind a keystroke to this macro, use this command:

> bind-key execute-macro-<number> <keystroke>

The only advantage of numbered macros over named macros is that the former do not share the same namespace as vile's commands. This attribute can be advantageous when creating macros recalled solely via key bindings.

Note that numbered macros are allocated from a fixed pool (default is 40 macros). This fixed limit can be changed during the editor's configuration. Given their fixed allocation and the fact that their strictly numeric "names" don't facilitate easy recall, numbered macros are not used that much anymore.

### Named macros

A named macro, aka "stored procedure", uses this syntax:

> store-procedure <unique-name>
> <language element>
> ...
> <language element>
> ~endm

where:

unique-name
  is an alpha-numeric identifier that does not conflict with the name of any existing editor command (the show-commands command generates a list of all existing commands).

A stored procedure is executed by simply referencing its name. To bind a keystroke to this macro, use this command:

> bind-key <unique-name> <keystroke>

Here's a trivial example:

> store-procedure write-msg-tst
> write-message "this is a test macro"
> ~endm
> bind-key write-msg-tst #h

Two mechanisms now exist for executing this macro:

- press "#h" within the editor, or
- simply use the name "write-msg-tst" as if it were any other built-in editor command. This means that "write-msg-tst" can be invoked from another macro, from a startup/configuration file, or from vile's command line, like so:

  > :write-msg-tst

Note that named macros may also include parameters and a help string, each of which are described in doc/macros.doc.

### User-defined Operators

These are defined using the store-operator command, and accept no arguments. Otherwise they are much like other named macros. These macros setup parameters and perform special processing wrapped around one of vile's built-in operators. Here is an example:

> store-operator fmt
> $cmd-count filter-til $cmd-motion 'fmt -w50 -'
> ~endm

In the example, the combination of $cmd-count and $cmd-motion (passed into the macro) act as the "real" operator's associated motion.

### Macro Language Elements

Macros may incorporate any of the editor's built-in commands, directives (e.g., ~if, ~else), any previously defined named or numbered macro, functions (e.g., &error, &sequal), and variables.

### Variables

There are some built-in variables that can be used in macros to gain access to parts of vile status, and parts of the current buffer. Built-in variables are accessed by name, prefixed with the '$' character. There are two types of built-in variables (the so-called "state" variables, and mode values). The state variables are: shown in the table below.

You can also show a summary using the "describe-state-variables" command:

Name | Description
--- | ---
$_ | most-recent macro $return value
$abufname | alternate buffer name (i.e. last visited) (read only)
$autocolor-hook | name of the hook that runs when autocolor is enabled
$bchars | number of characters in current buffer (read only)
$bchanged | true if current buffer is modified (boolean)

$bflags

status flags for current buffer (read only)

Flag | Description
--- | ---
a | autobuffer caused this to be created
d | directory listing
i | invisible, e.g., tags
m | modified
s | scratch, will be removed when popped down
u | unread

$blines | number of lines in current buffer (read only)
$brightness | RGB levels for gray, normal, bright in the 0-255 range (winvile version only)
$buf-fname-expr | combined buffer+fname expression (read only)
$buffer-hook | name of procedure to run when switching to a buffer
$bufname | current buffer-name under the cursor.
$bwindows | number of windows open on current buffer(read only)
$cbufname | current buffer name
$cdpath | editor's copy of the $CDPATH env var (read/write)
$cd-hook | name of procedure to run when changing directories

$cfgopts

comma-delimited list of "interesting" compiled options (read only).

Name | Description
--- | ---
ansi | vile built with ANSI terminal driver
athena | xvile built with Athena widgets
borland | vile built with Borland/DJGPP driver
curses | editor uses curses terminal driver
hypertext | editor supports highlighting and links
iconv | editor has iconv locale support
locale | editor uses system's LC_CTYPE locale
motif | xvile built with Motif libraries
multibyte | vile built with multibyte locales
nextaw | xvile built with Athena widgets (NeXtaw)
ntcons | vile built for Win32 console
ntwin | vile built for Win32 GUI
noshell | shell commands are disabled
oleauto | editor supports OLE automation.
openlook | xvile built with OpenLook libraries
os2vio | vile built for OS/2 VIO console
perl | editor includes perl interpreter
termcap | editor reads TERMCAP db for screen info.
terminfo | editor reads TERMINFO db for screen info.
vmsvt | vile built for VMS terminal
xaw | xvile built with Athena widgets (Xaw)
xaw3d | xvile built with Athena widgets (Xaw3D)

$cfilname | current file name
$char | character under the cursor
$cmd-count | repeat-counter for the current macro (read only)
$cmd-encoding | character set to use for minibuffer
$cmd-motion | motion for the current operator (read only)
$cryptkey | encryption key (write only)
$curchar | character offset in file
$curcol | current column position of cursor
$curline | current line in file
$cwd | current directory
$cwline | line offset in current window
$debug | macro debugging – set true for line by line tracing
$directory | controls location of temp-files (unused)
$discmd | display commands on command line (boolean)
$disinp | display command line input characters (boolean)
$empty-lines | parameter for force-empty-lines command
$encoding | character set associated with locale (read only)
$end-of-cmd | true if user ended the cmd with <cr>
$error-buffer | buffer name assigned to the error-buffer
$error-expr | regular expression that matched the error-buffer
$error-match | text that matched the error-buffer
$error-tabstop | tabstop to use with error-buffer for %C
$exec-path | where to find vile (read only)
$exec-suffix | suffix, if any, for execable programs (read only)
$exit-hook | name of procedure to run when quitting
$favorites | path to favorites folder (win32 only) (read only)
$fchanged | true if file for current buffer is modified (boolean)
$fence-limit | iteration limit for complex fences
$filename-expr | actual pattern for %F in [Error Expressions]
$filter-list | list of builtin-filters (read only)
$findpath | editor's copy of the $VILE_FINDPATH env var (read/write)
$find-cmd | last spawned find command (read only)
$font | current font name (X11/winvile versions only)
$forward-search | search direction, true=forward
$get-at-dot | ensure that "identifier-like" matching includes current editing position.
$get-it-all | match entire "identifier-like" word under the cursor.
$get-length | sets length of "identifier-like" word as side-effect.
$get-offset | sets offset of "identifier-like" word as side-effect.
$helpfile | $VILE_HELP_FILE env var or "vile.hlp" (read/write)
$iconname | current icon name (X11 version only)
$identifier | current "identifier-like" word under the cursor.
$kbd-encoding | keyboard encoding
$kbd-macro | the keyboard macro, see ^X-( ^X-) (read only)
$kill | some of the kill register (read only)
$kill-limit | maximum length for $kill
$kill-size | length of the kill register (read only)
$lastkey | last keyboard char struck
$latin1-expr | pattern to match locales using ISO-8859-1 in case they are not installed
$lcols | length of current line, in columns (read only)
$libdir-path | appended to $PATH when running filters
$line | text of current line starting with cursor
$llength | length of current line (read only)
$locale | locale, which determines character type (read only)
$majormode | current majormode, if any (read only)
$majormode-hook | procedure to overrride suffix/preamble rules
$match | last matched magic pattern (read only)
$menu-file | the name of the menu file (e.g. .vilemenu)
$mode | current mode ("command","insert","overwrite") (rd. o.)
$modeline-format | format of mode lines. see "Mode line customization".
$modeline-limit | maximum inline offset to scan for mode lines
$modified | is current buffer modified or not? (read only)
$ncolors | number of displayed colors, must be power of two
$ntildes | percent of window filled by ~ chars, at end of buffer
$ocwd | previous directory (read only)
$os | "dos", "vms", "os/2", "win32", and "unix", although the latter may be replaced with a more specific name derived from vile's configure script. (read only)
$pagelen | number of screen lines in use by editor
$pagewid | current screen width
$palette | current palette string
$patchlevel | current patch-level (empty for release) (read only)
$pathlist-separator | separator for lists of pathnames, e.g., $PATH
$pathname | current "path-like" word, under the cursor.
$pathname-separator | separator for levels of pathnames, e.g., '/'
$pending | typeahead pending flag (read only)
$pid | returns vile's process-id (read only)
$position-format | format of ^G command. see "Mode line customization".
$progname | returns "vile" or "xvile" or "winvile". (read only)
$prompt | the command-line prompt string ": "
$qidentifier | current qualified name (as with C++ ::)
$read-hook | name of procedure to run after a file is read
$replace | replacement pattern
$return | set within a macro to provide $_ on completion
$search | search pattern
$seed | current random number seed
$shell | name of the shell program for spawned commands.
$sres | current screen resolution
$startup-file | the name of the startup file (e.g. .vilerc). Normally this is only a filename, but can be an absolute path to override `$startup-path`.
$startup-path | where to find the startup file, i.e., a colon-separated list of directories on Unix-like systems. On Windows, use semicolon for separating the items in the list.
$status | returns the status of the last command
$system-crlf | the default value for dos mode, which can be preset using `-u` or `-U` options
$system-name | returns the operating system name shown in the `version` command
$term-cols | number of columns in terminal window (read only)
$term-encoding | terminal's encoding support (read only)
$term-lines | number of lines in terminal window (read only)
$term-resizes | true if vile handles terminal-resizing (read only)
$title | current window title (X11, win32 versions only)
$title-encoding | encoding of xterm window title, e.g., "8bit" for ISO-8859-1 or "utf-8".
$title-format | format of window title. see "Mode line customization".
$version | current version number (read only)
$with-prefix | string set by "~with" directives (read only)
$wlines | number of lines in current window
$word | current "word", a sequence of nonblanks
$write-hook | name of procedure to run before a file is written
$xdisplay | the value to set $DISPLAY when running $xshell.
$xshell | name of the terminal program for spawned xvile commands.
$xshell-flags | command-line flags after $xshell, normally "-e"

In addition to the state variables, you may set and use the values of the editor modes (i.e., universal modes, buffer-only modes or window-only modes), e.g., "setv $dos=true". The global values of the editor modes are not visible to the expression evaluator.

User-defined variables can also be set and used; their names are prefixed with the '%' character.

Response variables (a '@' followed by a prompt-string) cause vile to prompt for input with the given prompt-string.

Buffer variables (a '<' followed by a buffer name) return the current line of the specified buffer, automatically setting the position to the next line.

### Functions

There are also functions available, which can act on those variables, or on hard-coded values. Operations are expressed in prefix notation, so to add to numbers you would say "&add 3 5". You may use any unique abbreviation of the function names.

The "describe-user-functions" command shows this information:

Name | Args | Description
--- | --- | ---
&abs | 1 | absolute value of a number
&add | 2 | add two numbers together
&and | 2 | logical and
&ascii | 1 | char to integer conversion
&bchanged | 1 | true if given buffer is modified
&bind | 1 | lookup what function name is bound to key
&cat | 2 | concatenate string
&cclass | 1 | character class (see "show-printable")
&chr | 1 | integer to char conversion
&classof | 1 | inverse of &isa, returns classes for param
&cmatch | 2 | caseless match regular-expression value
&date | 2 | format 2nd param with 1st, like strftime.
&default | 1 | initial/default value for mode or state variable
&divide | 2 | division
&dquery | 2 | prompt user for input, given default value
&env | 1 | retrieve a system environment variable
&equal | 2 | numeric equality
&error | 1 | true if the parameter was ERROR
&execable | 1 | true if file is exec'able
&fchanged | 1 | true if file for given buffer is modified
&filter | 1 | true if the given majormode's filter is builtin
&ftime | 1 | modification-time of the given file, as a number
&geq | 2 | numeric greater than or equal
&get-key | 0 | (alias for &gtkey)
&get-key | 0 | (alias for &gtkey)
&get-completion | 2 | get name-completion for given category and value (see below for arguments)
&get-motion | 1 | (alias for &gtmotion)
&get-sequence | 0 | (alias for &gtsequence)
&global | 1 | retrieves global mode setting
&greater | 2 | numeric greater than
&gt | 2 | numeric greater than
&gtkey | 0 | get 1 character
&gtmotion | 1 | get keycode motion sequence for the binding
&gtsequence | 0 | get keycode sequence, e.g., #1
&indirect | 1 | evaluate indirect value
&isa | 2 | check if the second param is a member of first
&left | 2 | left string(string, len)
&length | 1 | string length
&leq | 2 | numeric less than or equal
&lessthan | 2 | numeric less than
&local | 1 | retrieves local mode setting
&lookup | 2 | look for filename (see below for arguments)
&lower | 1 | lower case string
&lt | 2 | numeric less than
&match | 2 | match regular-expression value
&mclass | 1 | returns the mode's class, e.g., buffer or Major
&middle | 3 | mid string(string, pos, len)
&modulo | 2 | modulus
&negate | 1 | negate
&neq | 2 | numeric inequality
&not | 1 | logical not
&or | 2 | logical or
&path | 2 | extract/translate pathname (see below for args)
&pcat | 2 | concatenate directory and filename
&pquote | 1 | quote pathname if needed, e.g., embedded spaces
&qpasswd | 1 | prompt user for password string
&query | 1 | prompt user for input
&random | 1 | get a random number from 1 to n
&rd | 1 | is a file readable
&readable | 1 | is a file readable
&regex-escape | 1 | returns value with regex metacharacters escaped
&register | 1 | value of register (1-character name)
&right | 2 | right string(string, pos)
&rnd | 1 | get a random number from 1 to n
&sequal | 2 | string logical equality check
&sgeq | 2 | string greater than or equal
&sgreater | 2 | string logical greater than
&sgt | 2 | string greater than
&sindex | 2 | find the index of second string in first
&sleq | 2 | string less than or equal
&sless | 2 | string logical less than
&slt | 2 | string less than
&sneq | 2 | string inequality
&stime | 1 | system-time, as a number
&stoken | 3 | true if token found in string, given delims
&subtract | 2 | subtraction
&times | 2 | multiplication
&token | 3 | select n'th token of string, given delims
&translate | 3 | translate "from" to "to" for given string.
&trim | 1 | trim whitespace from string
&upper | 1 | uppercase string
&word | 2 | select n'th word of string, blank-separated
&writable | 1 | is a file writable

The &get-completion function takes two arguments. The first is a category (one of "buffer", "command", "directory", "filename", "register" or "tags"). The second is an initial value to complete.

The &lookup function takes two arguments. The first is a keyword and the second is a filename. Keywords may be combined with '+', e.g., r+bin to find a readable file in the directory where vile's executable is. The keywords are for location:

bin | look in vile's directory
current | look in the current directory
home | look in user's $HOME directory
insecure | permit matches on files with insecure permissions (see check-access).
libdir | look along $libdir-path
path | look along user's $PATH
startup | look along $startup-path

and for access type, defaulting to an existence check:

execable | test if file is exec'able
readable | test if file is readable
writable | test if file is writable

Search order is fixed: current, home, bin, startup, path, libdir

The &path function takes two arguments. The first is a keyword and the second is a pathname. Keywords are: end (suffix of the filename), full (absolute path), head (directory), root (filename without suffix), short (relative path), tail (filename).

### Directives

Primitive flow-of-control within a macro may be obtained with certain directives. Macro directives start with a "~" and include the following: (see the file macros.doc for more detail)

Name | Description
--- | ---
`~break` | exit a `~while` loop |
`~else` | default conditional execution
`~elseif` cond | alternate conditional execution
`~elsewith` tokens | alterate tokens to following commands
`~endif` | finish conditional execution
`~endm` | finish a macro |
`~endwhile` | finish a `~while` loop |
`~endwith` | finish a `~with` block |
`~force` | force macro to continue even if command fails
`~goto` label | jump to a label in the current macro
`~hidden` | do not update screen while the macro executes |
`~if` cond | start conditional execution
`~local` vars | save specified variables, restore when macro terminates
`~quiet` | suppress messages while the macro executes |
`~return` | terminate current macro
`~trace` cond | set $debug trace
`~while` cond | execute a loop if the condition is true
`~with` tokens | prepend tokens to following commands

Line labels begin with a "*" as the first nonblank char, like:

> *LBL01

You would jump to this with:

> ~goto LBL01

Lines ending with '\' are joined before interpreting them.

### Hooks

There are a few places within vile where a user-specifiable procedure will be executed if desired. These points are referred to as "hooks". Hooks are specified by special variables which hold the name of a procedure to run at that point in the code. For instance, there is a "cd-hook", which is run when you changej directories. Assume the following are included within a vile startup file:

> store-procedure my-cd-action
> write-message &cat &cat &cat "moved from " $ocwd " to " $cwd
> ~if &seq $progname "xvile"
> set-variable $title $cwd
> ~endif
> ~endm
> set cd-hook my-cd-action

Whenever the current directory is changed within the editor (via the "cd" command), my-cd-action will print a message and, under xvile, change the window title.

The following hooks are currently implemented:

$autocolor-hook | applies syntax coloring to modified buffers when the keyboard is idle for a user-configurable time period
$buffer-hook | run when switching to a buffer
$cd-hook | run when changing directories
$exit-hook | run when quitting
$majormode-hook | procedure to overrride suffix/preamble rules
$read-hook | run after a file is read
$write-hook | run before a file is written

Be careful with "buffer-hook". Executing commands in the hook which themselves switch buffers is not recommended. In general, all the hooks are a little dangerous, since vile has not been written with re-entrancy foremost in mind. One should avoid putting actions in hooks which might cause the hook to be re-executed. (vile keeps the hook procedure itself from being re-executed, to prevent recursion, but the code surrounding the call to it may not be safe either.)

### Macro examples

To prevent vile from thinking that a failed command is an error in the macro, you can put "~force" in front of it. So, to write a macro which will run the "man" command on the identifier under the cursor, where you don't really consider it an error if the command fails, you might use:

> 9 store-macro
> ~force 1 shell-command &cat "man " $identifier
> ~endm
> bind-key execute-macro-9 ^X-m

(The argument '1' suppresses the "press return" prompt which normally appears after a command runs, since man runs a pager which does this anyway.)

The "screen-search-forward" command could be re-implemented as:

> 10 store-macro
> ~force search-forward $identifier
> ~endm
> bind-key execute-macro-10 ^X-/

And the "screen-search-pattern-grab" command, normally bound to ^A-/, could be implemented with:

> 11 store-macro
> set-variable $search $identifier
> write-message &cat "Search pattern is now " $search
> ~endm
> bind-key execute-macro-11 ^A-/

A variation, which will not find the identifier if it is a substring of another word, is:

> 12 store-macro
> ~force search-forward &cat "\\<" &cat $identifier "\\>"
> ~endm

This works by surrounding the string with the \< and \> regular expression metacharacters.

Here's another example, which finds C++ qualified identifiers, and uses them for a tag lookup:

> ; Implement ^A-^] for qualified-name tag lookup
> 24 store-macro
> backward-character
> ~local $search
> search-forward "^[a-zA-Z_][a-zA-Z0-9_:]*"
> write-message &cat "Tag pattern is now " $match
> ~force find-tag $match
> ~endm
> bind-key execute-macro-24 ^A-^]

(The "backward-character" is needed because "search-forward" will always skip the cursor position when scanning, so as to always find the next occurrence. The directive ~local is used to avoid disturbing the search string.)

Note that for simple key-remappings, binding is often preferable to creating a macro. Some people prefer using lower-case 'g' to as an equivalent to 'G', to goto a specific line. If done as a macro, like this:

> 3 store-macro
> goto-line
> ~endm
> bind-key execute-macro-3 g

then both g and G go to the end of the file, but whereas 1000G goes to line 1000, 1000g goes to the end of the file 1000 times. It is easier (and more correct) to do:

> bind-key goto-line g

A couple more examples of slightly more complex macros: They cause a jump to the next (or previous) line of the same (or lesser) indent, skipping over empty lines. (Thanks to MIURA Masahiro)

> ; macro 1 - back to the line of same indent
> ;
> 1 store-macro
> first-nonwhite
> set-variable %indlev $curcol
> ~force back-line-at-bol
> ~if &seq &trim $line ""
> ~goto L1
> ~endif
> ~while &les %indlev $curcol
> *L1
> ~force back-line-at-bol
> ~if &seq $status "FALSE"
> ~return
> ~endif
> ~if &seq &trim $line ""
> ~goto L1
> ~endif
> ~endwhile
> ~endm
> bind-key execute-macro-1 ^X-[
> ; macro 2 - forward to the line of same indent
> ;
> 2 store-macro
> first-nonwhite
> set-variable %indlev $curcol
> ~force down-line-at-bol
> ~if &seq &trim $line ""
> ~goto L2
> ~endif
> ~while &les %indlev $curcol
> *L2
> ~force down-line-at-bol
> ~if &seq $status "FALSE"
> ~return
> ~endif
> ~if &seq &trim $line ""
> ~goto L2
> ~endif
> ~endwhile
> ~endm
> bind-key execute-macro-2 ^X-]
> ; Use "@d" to change cwd to the dir containing the current file
> ; (contributed by Richard Hussong). Keep in mind that "^M" is an
> ; explict CR and that ":cd -" reverts cwd to its previous value.
> store-procedure cdcur
> cd &path head $cfilname
> ~endm
> use-register d load-register ":cdcur^M"
> ;; Underline current line with user-specified char. Ex:
> ;; blah blah blah blah <-- curr line
> ;; +++++++++++++++++++ <-- underline with +
> ;; from Daniel L. Ashbrook .
> store-procedure underline-currline
> write-message "enter underline char now..."
> set-variable %linechar &gtkey
> write-message ""
> ; don't underline trailing whitespace (trivial)
> trim-lines-til end-of-line
> ; don't underline leading whitespace (nontrivial)
> goto-bol
> setv %ldspace=&equ $char &ascii ' '
> setv %ldtab=&equ $char &ascii "\t"
> setv %ldwhite=&or %ldspace %ldtab
> ~if %ldwhite
> ~force substitute-til next-punctuated-word '^\b\b*' ''
> ~endif
> ; compute length sans lead/trail whitespace
> set-variable %linelength $llength
> ~if %ldwhite
> ; put leading whitespace back
> undo-change
> ; it's not possible to disable the screen clutter of
> ; visual-matches mode (following a substitution)
> ; for all buffers from within a macro. so substitute
> ; for an improbable char (which achieves desired effect)
> ~force substitute-til next-punctuated-word &chr \xff &chr \xff
> ~force clear-visual-matches
> ~endif
> unset-variable %ustring
> set-variable %i 0
> ; build underline string in memory and insert with a
> ; single operation (optimizes undo)
> ~while &less %i %linelength
> set-variable %ustring &cat %ustring %linechar
> set-variable %i &add %i 1
> ~endwhile
> ; force ustring to align with prev line
> ~local $autoindent
> setv $autoindent=true
> goto-eol
> append-string &chr 13 ; 13 -> CR
> insert-string %ustring
> ~force next-line
> goto-bol
> ~endm
> bind-key underline-currline #-
> ; macro 14 - grep for the word under the cursor, and put the result
> ; in a buffer named after that word. set the error-buffer,
> ; so that ^X-^X may be used to visit the lines found by grep.
> ; (we have to set error-buffer explicitly, since we renamed
> ; the buffer -- otherwise it tracks the last pipe read by vile)
> 14 store-macro
> set-variable %grepfor $identifier
> edit-file &cat "!egrep -n " &cat %grepfor " *.[chs]"
> rename-buffer %grepfor
> error-buffer %grepfor
> ~endm
> bind-key execute-macro-14 ^A-g

As a hint, it is (almost?) never correct to write a ':' command when creating a programmed macro. For instance, if you find yourself writing something like:

> &cat ":!chmod +w " $cfilname
> &cat ":e! " $cfilname

(in an attempt to make a buffer writable before editing it), then what you really want is:

> shell-command &cat "chmod +w " $cfilname
> replace-with-file $cfilname

Furthermore, some things are just as easy if done with a "keystroke" macro rather than a programmed macro:

> ; use this as '@w'
> use-register w load-register ":!chmod +w %^M:setl noview^M:w^M"

or

> map ^A-w ":!chmod +w %^M:setl noview^M:w^M"

(Of course you need to replace the ^M's with real carriage-returns.)

### Picture Mode

Another example of a fairly complex vile procedure can be found in the file "pictmode.rc". The code there implements a primitive means of drawing "ASCII art". To use it, first ":source pictmode.rc" and then "run pic". See the comments at the top of pictmode.rc for more information...

## Regular Expressions

Searches use regular expressions, which, as in vi, may be magic by default or not.

vile introduces some new magic metacharacters.

The code that implements the expressions is based directly on Henry Spencer's regexp code. Quoting from the original man page:

[For ease of reference, the metacharacters are noted on the left margin.]

`\|` | A regular expression is zero or more branches, separated by `\|'. It matches anything that matches one of the branches.
| A branch is zero or more pieces, concatenated. It matches a match for the first, followed by a match for the second, etc.
`* + \?` | A piece is an atom possibly followed by `*', `\+', or `\?'. An atom followed by `*' matches a sequence of 0 or more matches of the atom. An atom followed by `\+' matches a sequence of 1 or more matches of the atom. An atom followed by `\?' matches a match of the atom, or the null string. [i.e., `\?' matches 0 or 1 occurrences]

`\( \)
. ^
$
\c
c`

An atom is a regular expression in backslashed parentheses (matching a match for the regular expression), a range (see below), (matching any single character), `^' (matching the null string at the beginning of the input string), `$' (matching the null string at the end of the input string), a `\' followed by a single character (matching that character), or a single character with no other significance (matching that character).

`\< \>` | In addition, vile atoms may be: \< and \>, which match the beginning and end of a "word".
| Vile recognizes the X/Open regular expression character classes (and additional character classes), as well as shorthand expressions for them. You can use the shorthand expressions in a range or as an atom. Each shorthand expression has a complement, e.g., \w and \W.
`\i \I \a \A \b \B \c \C \d \D \f \F \g \G \w \W \l \L \o \O \p \P \q \Q \s \S \u \U \x \X` | [:alnum:] [:alpha:] [:blank:] [:cntrl:] [:digit:] [:file:] [:graph:] [:ident:], alphanumeric (plus '_') [:lower:] [:octal:] [:print:], printable (note that space is printable) [:punct:] [:space:] [:upper:] [:xdigit:]

`[ ]`

A range is a sequence of characters enclosed in `[]'. It normally matches any single character from the sequence. If the sequence begins with `^', it matches any single character not from the rest of the sequence. If two characters in the sequence are separated by `-', this is shorthand for the full list of ASCII characters between them (e.g. `[0-9]' matches any decimal digit). To include a literal `]' in the sequence, make it the first character (following a possible `^'). To include a literal `-', make it the first or last character.

| Additionally for vile, if "ignorecase" is set, then all literal matches, including those in character classes, are done without regard to upper and lower case.
| In magic mode, the following set of metacharacters must be preceded by '\' to hide their special meaning: * [ . ^ $ These characters are special if they are preceded with a '\': ? + ( ) | < >
| If magic mode is not on, only ^ and $ are special if not escaped. All of the following must be preceded with a '\' to be special, otherwise they are taken literally: ? + ( ) | * [ . < >
`\1 \9` | Replacement subexpressions are supported when substituting. That is, if part of an expression is contained in \( and \), then the part of the matched text in between those symbols will be substituted for an occurrence of \1 in the replacement pattern. Up to 9 such substitutions can be made. The special symbol & will & substitute for the entire match string.
`~` | The tilde (~) character will expand immediately when it is typed to be the contents of the previously entered replacement pattern. [ Earlier versions of vile made this version of the pattern available immediately, as a default response, but this made it difficult to substitute nothing after previously substituting something. ]

`\U \L
\E
\u \l
\bfrtn`

The replacement part of the substitution may also contain the special sequences \U and \L, which cause the replacement to be forced to uppercase or lowercase until a terminating \E is found; \u and \l, which force the case of a single character; and \b, \f, \r, \t, \n, which insert the usual ASCII character. Note that vile mimics perl's handling of \u\L\1\E instead of vi's. Given :s/\(abc\)/\u\L\1\E/ vi will replace with "abc" whereas vile and perl will replace with "Abc". This is somewhat more useful for capitalizing words.

## Command files

On startup, in the absence of '@' arguments, vile attempts to read the file ".vilerc" ("vile.rc" on non-Unix hosts) in the current directory, then in $HOME, and then in several host-specific locations (see the "Invocation" topic below for complete details). If found, vile executes the startup file's commands. It is possible to nest such executions. For example, you might keep your general default settings in your home directory, and put the following lines in a .vilerc in a directory in which you prefer tabs be set to 4 spaces:

> source "$HOME/.vilerc"
> set tabstop 4

The quotes surrounding the filename are necessary to protect the name from interpretation as a vile variable, since it starts with the '$' character.

Files can be executed at any time with the ":source" (or ":execute-file") command. There are control structures available, such as ~while, ~if, etc. Refer to the file doc/macros.doc which is distributed with vile for more information.

Nesting of source'd files is limited to a depth of ten, to prevent infinite recursion.

The ';' character can be used as a comment character in command files, but not necessarily on the same line as valid commands. Put your comments on separate lines to be safe.

## Invocation

vile searches for a startup or command file in these locations (and in the order listed):

>     1 - current working directory
>     2 - directory specified by $HOME
>     3 - if host is not Unix
>             vile executable directory
>         fi
>     4 - each directory specified in $VILE_STARTUP_PATH.  If
>         this environment variable is not set, the following
>         host-specific defaults are internally assumed:

>         VMS:  sys$login,sys$sysdevice:[vmstools],sys$library

>         DOS, OS/2 and Win32:  /sys/public;/usr/bin;/bin;/

>         Unix:  depends on whether or not $VILE_STARTUP_PATH was
>                set when vile was configured prior to
>                compilation.  If set, then the value of that
>                environment var is compiled into the editor,
>                else the default configure "datadir" is
>                selected, which is either:

>                /usr/local/share/vile   (typical root build)
>                ${prefix}/share/vile    (nonroot build)

>     5 - if host is not Unix, each directory specified in:
>             $PATH
>             $VILE_LIBDIR_PATH
>         fi

If the variable VILEINIT is set in the environment, it is used as a set of vile commands to initialize the editor. As a not-very-useful example of a VILEINIT sequence, the following setting recreates portions of the default initialization behavior:

> export VILEINIT
> VILEINIT="
> ~if &rd \"./.vilerc\"
> source \"./.vilerc\"
> ~else
> ~if &rd \"$HOME/.vilerc\"
> source \"$HOME/.vilerc\"
> ~endif
> ~endif"

Other environment variables:

VILE_ERROR_ABORT
  if VILE_ERROR_ABORT is defined during compilation, setting this environment variable at runtime will cause vile to abort (and dump core) rather than attempt to cleanup and exit with an error code on fatal errors. This is used for debugging.
VILE_HELP_FILE
  override the name of the help file, normally "vile.hlp". This sets the $helpfile variable.
VILE_LIBDIR_PATH
  override the search path for filter programs, normally the library-directory on UNIX systems. This sets the $libdir-path variable, which is appended to your $PATH variable when running filter commands on UNIX and Win32.
VILE_LOCALE_MAPPING
  override the pattern used to associate wide/narrow locales. vile uses this to compute a possible 8-bit "narrow" locale which corresponds to the current locale, thereby supporting editing of wide- and narrow-encoded text.

  The default value, `/\\.\\(UTF\\|utf\\)[-]\\?8$//`, simply strips the most common suffixes used for wide-character locales. For example, "en_US.UTF-8" would be converted to "en_US". If your computer's locale tables do not support that, you can modify the pattern to help vile find the narrow locale value that works.

VILE_MENU
XVILE_MENU
  if set, overrides the compiled-in location of the menu file used by xvile. If $VILE_MENU is unset, xvile checks the $XVILE_MENU variable (or XMVILE_MENU, if the program is renamed xmvile, etc).
VILE_NROFF_FILT
  if set, overrides the choice between "nroff" and "cawf" (depending on platform) in the ShowFormatted macro (^X-n). You may want to set this to "groff" if your system has groff installed, for instance, but relies on an antique version of nroff for manpages.
VILE_PWD
  if set, assume invoking shell's "$PWD" variable is valid, and use that rather than an initial getcwd() call.
VILE_SPELL_FILT
  if set, overrides the compiled-in program name and options for the spell-filter. Normally that is a string such as "spell -l"
VILE_STARTUP_FILE
  override the name of the startup file, normally ".vilerc" (or "vile.rc" for non-UNIX systems).
VILE_STARTUP_PATH
  override the search path for the startup and help files. This sets the $startup-path variable.
VILE_TABLE_FILT
  if set, indicates that "tbl" is available. Set this to "cat" if you do not want to use "tbl", but do want to use "nroff", etc (see VILE_NROFF_FILT). It is used in the ShowFormatted macro (^X-n).

Note: For simplification, the filters.rc script assumes that the filter programs are in $PATH. The $libdir-path feature may not work for you out-of-the-box, since your shell's initialization file (e.g., ".cshrc") may set $PATH. One solution (other than adding /usr/local/lib/vile to $PATH) is to set the vile variable $shell to /bin/sh, assuming you have no Bourne shell ".profile" to set $PATH. Then vile's modification of $PATH affects the filter process and also runs faster.

### Command line options

The command line options are fairly straightforward. vile supports running just any command after a '+', as does vi. It also has some shortcut options to support the commonly used '+400' to go to line 400 and '+/foo' to search for foo. Command files can be explicitly executed on startup by prefixing them with the '@' character, as in "vile @mycmds file.c". This will suppress the operation of VILEINIT and the .vilerc files.

-?
  print the usage message.
-c command
  will execute the given command after loading the first file.
+NNN and -gNNN
  vile will begin the session on the first file at the specified line number.
+/pattern or -s pattern
  In the first file, vile will execute an initial search for the given pattern.
-t tag
  vile will edit the correct file and move the cursor to the location of the tag. This requires a tagsfile created with the ctags(1) command.
-h
  Invokes vile on the helpfile.
-v
  Invokes vile in "view" mode - no changes are permitted to the buffer in this mode. (This will also be true if vile is invoked as view.)
-V
  vile will report its version number.
@cmdfile vile will run the specified file as its startup file, and will bypass any normal startup file (i.e. .vilerc) or environment variable (i.e. $VILEINIT).

## Encryption

vile implements an interface to the UNIX crypt function, like standard vi, and can apply this to your buffers either automatically (via a mode setting) or manually (via an explicit command). The algorithm is reversible, so encrypting a previously encrypted buffer will undo that encryption.

The encryption key for a buffer will be a) inherited from the global cryptkey which was set via the vile command line (-k) if it exists, b) set with the set-crypt-key (^X-X) command, or c) obtained from the user interactively. The details of this are a little messy, and should probably be cleaned up somewhat. The buffer's key will remain active until changed or reset.

If "crypt" mode is on, then when the buffer is written the user will be prompted for the encryption key to use if none has yet been set. If "crypt" mode is on, and an encryption key has been set, then the buffer will be encrypted when read. In practice this means you need to read the file, then set crypt mode, then reread the file. (Or, equivalently, create the buffer, set crypt mode, and then insert the file into it (with ":r").

As an alternative to UNIX crypt, the collection of macros in the file macros/gnugpg.rc facilitates use of GNU's gpg encryption package. gpg and gnugpg.rc work well on both Unix and win32 hosts.

## Crash Recovery

The "vi -r" option, used to recover an edited buffer after a system crash, is not present in vile. If vile itself crashes (usually (though infrequently :-) due to a bug, but perhaps due to an externally applied signal), it attempts to save any modified buffers in a temporary directory and, on a Unix host, sends mail to the user to that affect. The selection of the temporary directory is host-specific, as follows:

### Unix (in priority order)

> $TMPDIR/vileDXXXXXX
> /var/tmp/vileDXXXXX
> /usr/tmp/vileDXXXXX
> /tmp/vileDXXXXXX
> ./vileDXXXXXX

### DOS and OS/2

Saved buffers are written to disk using the path ./V<buffername> .

### All other hosts (in priority order)

> $TMPDIR/vileDXXXXXX
> ./vileDXXXXXX

where "XXXXXX" is a unique suffix created by mktemp().

If system crashes are frequent on your system, you should stop using it. You might also consider the "autosave" and "autowrite" options, which will cause more frequent saves of your work.

## Mode line customization

At the bottom of each window is a mode (or "status") line which is used for displaying certain characteristics of the window and the buffer associated with it. On most displays, this mode line will be highlighted in reverse video or via other means in order to visually separate windows and to distinguish the mode line from text displayed in the window.

The editor variable "modeline-format" is set to a string which controls formatting of mode lines. This variable is user settable and thus may be used to customize the display of mode lines. The format specifiers which may appear in the format control strings are as follows:

Format | Description
--- | ---
%b | buffer name
%c | column number if "ruler" is set
%C | character value at current edit-position.
%f | file name when not internal buffer and when not the same as the buffer name.
%F | file name when it is internal buffer name and not the same as the buffer name.
%i | insert/overwrite/replace mode indicator, displayed only when in insert, overwrite, or replace mode. When not in one of these modes, the separator character (often "-", "=", or " ") will be displayed.
%l | line number to be displayed if "ruler" is set
%L | number of lines in buffer, if ruler is set
%m | major mode(s), e.g., cmode, view-only, etc. Displayed in square brackets.
%M | brief version of "%m", omitting "mode", etc.
%n | file leaf name when not internal buffer name, otherwise the buffer name.
%N | absolute file path when not internal buffer name, otherwise the buffer name.
%p | line number as percentage of number of lines if "ruler" is set
%P | line number as percentage of number of lines
%r | relative file name when not internal buffer name, otherwise the buffer name.
%S | rough position of window with respect to buffer (top, bot, all, emp, mid) when ruler not set (or ruler is set, but buffer is empty).
%= | middle separator; should appear at most once in a format string. This indicates where to separate the left and right hand portions of the mode line with a long string of dashes (or whatever the separator character is).
%- | single occurrence of separator character
%| | eighty column indicator
%% | percent sign
%: | colon
%{name} | any internal mode/variable value, given its name

Some of the format specifiers (%f, %F, %m, %l, %c, %p, %S, %L, %C) are conditionally displayed. For example "%m" will display the major modes only if there are some major modes set or if the buffer has been modified (which is sort of a major mode). Similarly, "%F" and "%f" will cause the associated file name to be displayed when the buffer is of the appropriate type (a scratch buffer or not) and the shortened file name is different from the buffer name. It is desirable at times to cause a prefix string and/or a suffix string to be emitted along with the string obtained after conversion of the format specifier. This may be done by following the format specifier with a colon, the prefix string, another colon, the suffix string, and another colon. For example, "%l:(:,:%c::) :" might be used to display the line and column number for "ruler" mode. Note that either or both of the prefix and suffix strings may be empty.

Characters in the string which are not part of a format specifier are output verbatim.

The default format control string is as follows:

> "%-%i%- %b %m:: :%f:is : :%=%F: : :%l:(:,:%c::) :%p::% :%C:char ::%S%-%-%|"

Mode lines for some versions of vile previous to version 4.7 can be obtained with the following format string. This will remove the percentage indication from the mode line when in ruler mode and also shift the ruler indicator to the far right in the mode line.

> "%-%i%- %b %m:: :%f:is : :%=%F: : %-%-%-%-:%l:(:,:%c::):%S::%-%-:%|"

## Color basics

The editor's support of color varies from host to host. On some hosts, such as VMS and DOS, limited capability exists. On other hosts, full-blown syntax coloring is provided for a wide variety of languages and tools. Prior to discussing the ins and outs of syntax coloring, it helps to first describe several key color features and concepts.

### Console/standard vile versus GUI vile

Depending on the host, vile comes in two flavors:

- console (or "standard") vile, which displays text with block character, cursor-based addressing.
- GUI vile (aka, winvile on a win32 host and xvile on a Unix host), which displays text using the host's GUI APIs.

In general, GUI vile supports a richer set of color features and capabilities than console vile.

### Color palette

Depending on the capabilities of the host operating system and the underlying display hardware, vile supports a palette of up to 16 colors. The editor's color names are fixed, as shown in this list:

External user name | Internal vile name
--- | ---
black | C0
red | C1
green | C2
brown | C3
blue | C4
magenta | C5
cyan | C6
lightgray | C7
gray | C8
brightred | C9
brightgreen | CA
yellow | CB
brightblue | CC
brightmagenta | CD
brightcyan | CE
white | CF

Note that both xvile and winvile provide support for the mapping of arbitrary RBG values to the above color names, thus permitting the creation of a customized color palette.

### xvile custom colors

When a color X server and color display are available, xvile's default colors are modified by changing the editor's color resources (refer to the topic "X Resources" in this help file). So, for example, the following line in an .Xdefaults or .Xresources file maps "gray" above to red:

> XVile.color.fcolor8: rgb:ff/0/0

or

> XVile.color.fcolor8: red

### winvile custom colors

winvile's default colors are changed via the editor's set-rgb-palette command. Mirroring the example above, map "gray" to red like so:

> set-rgb-palette gray 255 0 0

### Display attributes

vile supports bold, italic, underline, and reverse display attributes. These attributes may be used to modify/enhance any of the existing colors (e.g., bold blue), or render text as a "color" in its own right (e.g., configure the editor to highlight all matched search strings in the reverse attribute).

### Show-colors command

The show-colors command (i.e., ":show-colors") displays the editor's current color and attribute mappings.

### Xterms, terminfo, and termcap (Unix hosts only)

Note that on some unix hosts it's possible to run standard vile in a color xterm and thereby gain access to an expanded color palette (albeit often limited to 8 colors). However, this is only possible when:

- your terminal type (specified via the $TERM environment var) supports color, and
- vile is compiled and linked with the terminfo library.

Hint 1: Modern xterm and similar terminal emulators support 8 colors (i.e., ensure that the correct $TERM is used, e.g., "export TERM=xterm" or csh equiv is included in your shell startup file).

Hint 2: To determine if the editor was compiled with terminfo, type :show-variables and examine the value of $cfgopts. If this variable includes the string "terminfo", you've got a shot. If "termcap" is listed instead, vile's color palette is limited to black and white (i.e., no color). Assuming your host supports terminfo, the following build commands force the editor to use that library:

> $ make clean; ./configure --with-ncurses; make

For additional hints and help, try this URL:

> http://invisible-island.net/xterm/xterm.faq.html#no_color

### Visual matching (VM)

All hosts support visual-matches mode, which highlights search text with either a simple color (no modifiers) or a display attribute. To see the list of supported colors and attributes, type:

> :set visual-matches=<tab><tab>

To learn more about this mode, search for "visual-matches" elsewhere in this help file.

### Foreground color (FC)

On hosts and display hardware that support it, the editor's foreground color may be set to a simple color value (no attribute modifiers allowed). Type:

> :set fcolor=<tab><tab>

for a list of supported colors.

### Background color (BC)

On hosts and display hardware that support it, bcolor mode sets the editor's background color. Bcolor utilizes the same color list as fcolor.

### Attribute control sequences (ACS)

A buffer may be manually or programmatically encoded with strings that cause the editor to render text in arbitrary color/attribute sequences. For example, consider the following data:

>     ^A3C1:red text, ^A4B:bold text

Given a suitable command, vile will render this as:

>     <begin red>red<end red> text, <begin bold>bold<end bold> text

It's possible to mix colors and attribute as well:

>     ^A8BC1:bold red text

which is rendered as:

>     ^A8BC1:<begin bold&red>bold red<end bold&red> text

These sequences are the building blocks of syntax coloring. For a more detailed discussion of attribute control sequences, refer to the topic "Writing your own filters" in this help file.

### Syntax coloring (SC)

vile colors a buffer via these steps:

1. an external filter (e.g., vile-c-filt) is run and subsequently reads an optional keywords file and a color specification file. The latter maps classes of language keywords/elements to user-specified colors and display attributes.
2. the filter reads the buffer being colored from stdin and encodes language keywords/elements with attribute control sequences.
3. the filter writes its results to stdout, which vile reads back and uses as control information to color the buffer.
4. the editor redraws its display, appropriately rendering all attribute-encoded keywords (e.g., "if", "while") and other syntactic elements (e.g., strings and numbers), based on the information embedded in the filter's output.

### Host capability matrix

Color Feature | VMS (std) | VMS (GUI) | DOS | OS/2 | Win32 (std) | Win32 (GUI) | Unix (std) | Unix (GUI)
--- | --- | --- | --- | --- | --- | --- | --- | ---
Visual Matching | Y | Y | Y | Y | Y | Y | Y | Y
Foreground Color | N | Y | Y | Y | Y | Y | [2] | Y
Background Color | N | Y | Y | Y | Y | Y | [2] | Y
Attr. Sequences | Y | Y | Y | Y | Y | Y | [3] | Y
Syntax Coloring | N | N | N | [1] | Y | Y | [3] | Y

Note 1: vile's filter mechanism blocks (hangs) when processing "large" buffers. Consequently, syntax coloring is not recommended, except if one could use the builtin-filters configuration.

Note 2: Requires a terminfo terminal type that supports color.

Note 3: If a terminal type supporting color is unavailable, then "coloring" is limited to the use of attributes like bold, underline, etc.

## Syntax coloring

vile's source distribution includes an extensive set of filters that color many languages and text file formats, including (but not limited to):

C/C++, Java, Perl, HTML, shell scripts

Filters come in two flavors: builtin and external. Builtin filters are bound directly into the editor and invoked via function calls. External filters are standalone executables invoked via a pipe and typically named "vile-xxx-filt", where "xxx" denotes the target text/language. Note that "xxx" is usually the same name assigned to vile's corresponding builtin filter and "majormode" (there are some exceptions). The following table lists example paired filter and majormode names:

Language Name | Builtin Filter Name | External Filter Name [1] | Majormode Name[2]
--- | --- | --- | ---
C | c | vile-c-filt | cmode
HTML | html | vile-html-filt | htmlmode
Perl | pl | vile-pl-filt | perlmode
sh | sh | vile-sh-filt | shmode

For a complete listing of all filters and supported languages and text file formats, refer to the file doc/config.doc in the editor's source distribution.

[1] Whether the editor uses builtin or external filters depends solely upon configuration options specified when the editor is compiled and linked (see doc/config.doc for details). As you might expect, builtin filters offer faster syntax coloring at the cost of a larger editor executable. For the purposes of this document, it's assumed that the editor is bound with builtin filters.

[2] Majormodes are an interesting subject in their own right, but won't be discussed much within the context of syntax coloring. For more info, refer to the help topic "Majormodes" in this help file, as well as the file doc/modes.doc.

[3] Previous releases of vile utilized a syntax filtering system that actually applied color attributes to a target buffer, thereby damaging the editor's undo history. vile version 8.3 (and later) utilizes a new command, called "attribute-from-filter-til", which applies coloring information directly from the filter's output stream without modifying the affected buffer.

The remainder of this section of the help file includes a step-by-step description of syntax coloring configuration, as well as pointers to related features.

### Prerequisites

- be familiar with the help topic entitled "Color basics".
- ensure the target host supports syntax coloring.
- if on a Unix host, compile and link the editor from the source distribution. This step is optional on a win32 host, as precompiled binaries (editor and filters) are available from ftp://ftp.invisible-island.net/vile/ . Note that almost all filters require preprocessing with flex (not a standard Windows tool) prior to compilation.

### Configuration

There are three configuration recipes, each dependent on the target host and/or the user's privilege level.

### Unix install recipe – root privileges available

The simplest install copies the editor to a directory in the system PATH (we'll assume /usr/local/bin), and copies all syntax coloring data and macro files to /usr/local/share/vile. The following commands accomplish that task:

> unset VILE_STARTUP_PATH VILE_LIBDIR_PATH
> make clean; ./configure --with-builtin-filters; make
> make install

Users should take these additional steps:

1) add the following to their $HOME/.vilerc startup files:

> source "filters.rc"

2) execute these shell commands (as necessary):

> mkdir $HOME/.vile
> cp /usr/local/share/vile/vile.keywords $HOME/.vile

That's it. Now skim through the "Manual recipe" topic below and then pay attention again when you hit the topic entitled "Testing the configuration". With regard to the remainder of this discussion, the term "COLORDIR" refers collectively to the list of directories where vile searches for keyword files. This is the list:

- the current directory
- the home directory
- the `vile` subdirectory of the home directory
- the directories listed in $startup-path.

When searching directories which it does not “own;”, vile looks for the filename with a leading “.;”. The `which-keywords` macro illustrates this best, e.g.,

> which-keywords cmode

produces this output in the `[Which Keywords]` buffer:

>     Show which keyword-files are tested for:
>             cmode
>     (* marks found-files)

>     $cwd
>       ./.c.keywords
>     $HOME
>       ~/.c.keywords
>       ~/.vile/c.keywords
>     $startup-path
>     * /usr/share/vile/c.keywords

### Unix install recipe – no privileges

The simplest install copies the editor and all data and macros file to a writable directory tree (we'll assume $HOME/local). This syntax does the job:

> unset VILE_STARTUP_PATH VILE_LIBDIR_PATH
> make clean
> ./configure --prefix=$HOME/local --with-builtin-filters
> make
> make install

These additional steps are required:

1) add the following to the $HOME/.vilerc startup file:

> source "filters.rc"

2) execute these shell commands (as necessary):

> mkdir $HOME/.vile
> cp $HOME/local/share/vile/vile.keywords $HOME/.vile

3) add $HOME/local/bin to $PATH (if not already specified)

That's it. Now skim through the "Manual recipe" topic below and then pay attention again when you hit the topic entitled "Testing the configuration". With regard to the remainder of this discussion, the term "COLORDIR" refers collectively to the directories $HOME/.vile or $HOME/local/share/vile as appropriate.

### Manual Recipe – Win32 host

You may choose to not use the winvile install/setup program, or else you may be installing console Win32 vile. In either case, you can always manually configure vile for Win32. For the purposes of this discussion, it is assumed that the editor is not built from sources, but instead obtained from precompiled binaries, as described next.

1) create a directory (hereafter referred to as COLORDIR) to store the editor's external color keyword and macro files. Example COLORDIR name: c:\util\vcolor

2) obtain these two distributions:

> ftp://ftp.invisible-island.net/vile/filters.zip
> ftp://ftp.invisible-island.net/vile/vile-w32.zip

3) extract the contents of filters.zip into COLORDIR.

4) extract the contents of vile-w32.zip into a temp directory. From within this temp directory:

a) copy *.rc to COLORDIR. Note that the most important of these files is filters.rc .

b) copy vile.exe, vile.hlp, and winvile.exe to a directory in your PATH. Note that vile.exe and winvile.exe are both bound with all of the editor's builtin filters.

5) edit your startup file (vile.rc) and add this line:

> source "filters.rc"

6) export these environment variable settings:

>     VILE_STARTUP_PATH=COLORDIR
>     VILE_LIBDIR_PATH=COLORDIR

Example entries in Win9x/ME's autoexec.bat:

> SET VILE_LIBDIR_PATH=c:\util\vcolor
> SET VILE_STARTUP_PATH=c:\util\vcolor

On a Win/NT/2K host, env vars are initialized via a control panel applet. WinXP uses a different mechanism.

### Testing the configuration

Basic configuration is now complete. Filters.rc installs several stored procedures, including:

Macro Name | Binding | Function
--- | --- | ---
HighlightFilterMsg | ^X-q | Colors the current buffer if a majormode and filter exist for same.
HighlightClear | ^X-Q | Clears the current buffer's color attributes.
set-highlighting | <none> | Attach a major mode to a buffer and re-color same. More about this below.

For a simple go/no-go test, do:

- edit a C source file
- examine the editor's modeline and ensure that "[cmode]" is in effect
- type ^X-q

If all is well, various elements of the C program will be highlighted/colored. You may not particularly care for the color attributes chosen, but that's configurable (keep reading :-) ). If nothing happened, skip down to the troubleshooting section.

### Read-hook

Typing ^X-q each time a new file is opened gets old after awhile. To force the editor to take over this task, add this line to your startup file:

> setv $read-hook HighlightFilterMsg

This setting initiates syntax coloring whenever a new file is edited. However, note that the read-hook won't initiate syntax coloring when a buffer's contents change, which brings us to the next topic. HighlightFilterMsg is a wrapper for the macro HighlightFilter, which adds a message saying that it is updating attributes. If you prefer no messages, use HighlightFilter.

### Autocolor

It's possible to automatically initiate syntax coloring when the editor detects no active input during a user-configurable interval. If this sounds appealing, add the following to your startup file:

> ; change autocolor mode value to suit individual tastes
> set autocolor=2000
> setv $autocolor-hook HighlightFilterMsg

These settings initiate an automatic syntax coloring check whenever 2 seconds of idle time elapses (autocolor's argument is scaled in milliseconds). Note that autocolor won't actually invoke a syntax filter unless it detects a modified buffer.

To disable this feature, set autocolor to 0 (zero).

Note that "autocolor" is a buffer mode and as such, can be enabled globally, but disabled for one or more buffers where coloring is inappropriate. That is, type ":setl autocolor=0" to disable the automatic syntax coloring for a particular buffer.

For obvious reasons, this feature is less "intrusive" on fast hardware. Even on fast hardware, running an external syntax filter can be a little slow. The built-in filters run much faster, fast enough that this combination is not that intrusive. The filters.rc script checks if vile has built-in (or loadable) syntax filters and will turn on autocolor and the $read-hook automatically in this case (with a 5 second idle time). Depending on the speed of your hardward, you may wish to make this shorter.

If autocolor is too slow, you can temporarily disable it by turning the highlighting mode off:

> :set nohl

### Changing color/attribute mappings

Filters will color text based on the contents of the file COLORDIR/vile.keywords . This file's configuration syntax is described in detail in doc/filters.doc. We'll hit the high points here:

- a line that begins with ':' is a comment
- language elements are grouped into classes, each of which is assigned a color, using this syntax:

> .class <name>:<ACS>

where:

>     <name>      ::= an arbitrary alphanumeric string.
>     <ACS>       ::= { C<hexdigit> | U | I | B | R }
>     C<hexdigit> ::= internal vile color name
>       U         ::= underline attribute
>       I         ::= italic attribute
>       B         ::= bold attribute
>       R         ::= reverse attribute

An example keyword file might contain:

> .class Action:BC2
> .class Comment:BC1
> .class Error:CA
> :.class Ident:R
> .class Ident2:C6
> .class Keyword:C3
> .class Keyword2:BC1
> .class Literal:UC5
> .class Number:C6
> .class Preproc:C2
> .class Type:CD

The "Comment" class defines the color attribute applied to a language's comments, which will be rendered in "B"old "C"olor "1". "Literal" applies to string literals, which will be shown as "U"nderlined "C"olor "5". "Keyword" applies to a language's reserved words (e.g., "if", "while", "break"), which will be encoded as "C"olor "3". And so forth. Note that few filters use all of the classes listed in this file.

As should be obvious at this point, color configuration is effected by editing vile.keywords and applying individual tastes and preferences.

For completeness sake, it should be noted that the mapping of language tokens (e.g., "int", "static", "while") to vile.keyword's generic classes occurs in the individual language-specific keyword files. In general, a language-specific keyword file (e.g., COLORDIR/awk.keywords, COLORDIR/perl.keywords, COLORDIR/c.keywords) provides only part of the filter's behavior – much of its action is encoded in its source, which for most filters is written in "flex". It is not expected that users will need or want to edit these files.

### Caution: vile.keywords is a precious file

From time to time, users upgrade to the latest release of vile. If the above syntax coloring configuration and installation instructions are blindly repeated during an upgrade, your copy of vile.keywords will be overwritten with the corresponding file from vile's distribution. This is not a happy event if you've spent time tweaking this file to suit your tastes (the author speaks from experience). Word to the wise:

Once vile.keywords is edited to your satisfaction, make a backup copy and/or save it under version control!

### Troubleshooting

Try this checklist when syntax coloring doesn't work:

- Does your display hardware and/or host support color? Type ":show-colors" to list current capabilities. If colors/attributes appear to be missing, reread the "Color basics" topic in this help file.
- Win32 users should ensure that these environment vars are properly initialized:

  >     VILE_STARTUP_PATH
  >     VILE_LIBDIR_PATH

- Your startup file should include these lines:

  > source "filters.rc" ; quotes matter on win32 hosts
  > setv $autocolor-hook HighlightFilterMsg
  > setv $read-hook HighlightFilterMsg
  > set autocolor=2000

- Some users have made the mistake of explicitly specifying a filter via the filtername mode. Don't do that.

### Attaching/Forcing a buffer's majormode

For the most part, when vile visits a file, the correct majormode is attached to the file's buffer and appropriate syntax coloring ensues. But there are times when vile may choose the wrong majormode and/or not specify one at all (the latter case most likely occurs when the file's suffix doesn't match any of the possibilities listed in filters.rc). The result is either inappropriate or no highlighting. In this situation, use the "set-highlighting" macro to explicitly specify the desired majormode.

For example, suppose I'm editing an older copy of a C++ source file called main.cpp, which has been renamed to main.cpp.old . In this scenario, vile will not attach a majormode to main.cpp.old's buffer and consequently will not color the buffer. To set the proper majormode and force syntax coloring, simply type:

> :set-highlighting cpp

### Man pages

It's also possible to syntax color Unix man pages, although the procedure is not tied to a majormode. Refer to the help topic entitled 'Filtering "man" pages' for further information.

### Spell checking (Unix hosts only)

The editor is capable of spell checking the current buffer (with ispell) and subsequently highlighting all misspelled words in the Keyword class color (as specified in vile.keywords). If this feature sounds useful, then add this line to your startup file:

> source "spell.rc"

Spell.rc installs ^X-i as the keybinding that initiates spell checking.

### Further reading

More information on syntax coloring can be found in the file doc/filters.doc, in the vile source directory.

## Setting Extra Colors

Syntax highlighting applies to buffers which are loaded from files. vile can also generate buffers to show its internal state. Those can be colored using the "extra colors" feature. The feature is called "extra colors" both because these are colors not set via syntax filters, but also because it allows color and attribute combinations not available via the normal mode setting mechanism.

The show-extra-colors command shows the types of things that can be colored, along with their current state, e.g.,

>     enum             default
>     hypertext        default
>     isearch          default
>     linebreak        default
>     linenumber       default
>     modeline         reverse
>     number           default
>     regex            default
>     string           default
>     warning          default

The set-extra-color command sets the colors. It prompts for the name of a type, followed by a combination of color and attributes. Use '+' to join the color and attributes. These are possible commands for setting isearch (the highlighting used for incremental search):

> set-extra-color isearch reverse
> set-extra-color isearch reverse+blue
> set-extra-color isearch blue+reverse
> set-extra-color isearch blue+reverse+underline
> set-extra-color isearch red

Here is an example of how the various extra colors might be used:

> ~if &sge &cat $version $patchlevel 'version 9.7f'
> ~with set-extra-colors
> isearch blue+underline
> hypertext underline+red
> modeline reverse+green
> string magenta
> regex underline+magenta
> number cyan
> enum green
> ~if &sge &cat $version $patchlevel 'version 9.7m'
> warning reverse+bold+red
> ~endif
> ~endwith

## Majormodes

Prior to studying majormodes, it helps to be familiar with the "Editor modes" and "Syntax coloring" topics.

Majormodes are collections of buffer mode values that vile automatically assigns to new buffers. When the vile distribution file "filters.rc" is sourced, it in turn sources "modes.rc", which subsequently defines a significant number of majormodes for various programming languages and file formats. The majormode assigned to a particular buffer is dependent upon two criteria, in the following priority order:

1. the suffix of the file being edited, and
2. the file's preamble (i.e., file's first line).

Both suffix and preamble are expressed as regular expressions and examples of each are readily available in modes.rc . Speaking of modes.rc, it becomes obvious from browsing this file that most majormode buffer settings involve specifying appropriate regex patterns for fences and comments.

The syntax for defining a new majormode or overriding an existing majormode is quite rich and fully described in the file doc/modes.doc. Rather than regurgitating the contents of that file here, we'll hit the high points with a couple of examples.

To define a new majormode, add this in your vile startup file:

> define-mode <new_majormode_name>
> ~with define-submode <new_majormode_name>
> mode-pathname "<regexp_pattern>" ; see next para
> mode-filename "<regexp_pattern>" ; see next para
> suffixes "<regexp_pattern>" ; see next para
> preamble "<regexp_pattern>" ; see next para
> before "<if necessary>"
> filtername "<syntax-coloring-filter>"
> buffer mode setting#1
> buffer mode setting#2
> ; etc.
> ~endwith

Selecting file(s) for inclusion within a majormode is a matter of specifying an appropriate regular expression, like so:

regexp mode name | selection based on
--- | ---
mode-pathname | any file component in path
mode-filename | leaf filename
suffixes | .<file_suffix>
preamble | first line of file

One or more of these regular expressions may be specified within a majormode definition, with selection precedence given in the order listed above.

As an actual example, suppose someone wanted to edit this help file and subsequently submit patches to vile's developers. In the spirit of cooperation, the developers would appreciate changes that were made with the same tabstops and tab insertion policies as used in the existing help file (vile.hlp). Taking a peek at vile.hlp, it can readily be seen that physical tabs are indeed used, with stops apparently set at intervals of 8. Also, it appears that the right margin is set fairly close to 80. To mirror this policy, create this new majormode:

> define-mode hlp
> ~with define-submode hlp
> suf '\.hlp$'
> ts=8
> fillcol=77
> tabinsert
> filtername 'vile-txt-filt'
> ~endwith

Now, whenever a file with suffix ".hlp" is edited, it will be colored with vile-txt-filt and physical tabs inserted at multiples of 8.

To override or augment the buffer mode settings of an existing majormode, do this in your startup file:

> source "filters.rc"
> ; ...
> define-mode <existing_majormode_name>
> ~with define-submode <existing_majormode_name>
> changed buffer mode setting#1
> changed buffer mode setting#2
> ; etc.
> ~endwith

For example, suppose it was desirable to edit all text files with ignorecase disabled. This startup file snippet will suffice:

> source "filters.rc"
> ; ...
> define-mode txt
> ~with define-submode txt
> ignorecase
> ~endwith

Once associated, majormode submodes can be setl/unsetl just like regular local buffer modes. But note well that set/unset have no effect on submodes. So, when hlpmode is in effect, this command works:

> setl notabinsert

but this command has no effect:

> set notabinsert

As added syntactic sugar, majormode submodes may be prefixed with the majormode name and changed like so:

> set/setl txt-ignorecase
> set/setl hlp-fillcol=60
> unset/unsetl txt-ignorecase
> unset/unsetl hlp-tabinsert

### Notes

1) Use the command "show-majormodes" to display the list of majormodes and their associated submodes.

2) Only one majormode can be set for a buffer.

3) To override the majormode that vile assigns to a buffer, use either the set-highlighting macro (defined in filters.rc) or the "setl <majormode_name>" command. Example:

> setl cppmode ; <-- force cppmode for current buffer

### Distinguishing between C/C++ include files

Both C and C++ use ".h" as an include file suffix. vile's current majormode definitions favor "*.h" for inclusion in cmode (not cppmode), which is not desirable for C++ programmers and/or a C++ project. There are two workarounds:

1) On a project-by-project basis (i.e., developer does not devote all of his/her time to C++ coding), simply add something like this to the vile startup file:

> source "filters.rc"
> ; ...
> define-mode cpp
> ~with define-submode cpp
> mode-pathname 'project_root_directory_name/.*\.h$'
> ~endwith

This change specifies that all "*.h" files beneath a root directory name are presumed to be C++ files.

2) If coding C++ more than C, then make these changes:

> source "filters.rc"
> ; ...
> define-mode cpp
> ~with define-submode cpp
> suffixes '\.\(C\|CC\|cc\|cpp\|cxx\|hxx\|h\|hh\)$'
> ~endwith

This change adds ".h" to the list of C++ files and since vile tests cppmode before cmode, all "*.h" files will now be edited in cppmode.

### cmode: the original vile builtin majormode

Long before Tom Dickey added majormodes to vile, there existed "cmode", a feature that included its own builtin tab settings and indentation style (still available today as "cindent"). This older version of cmode served as the precursor for vile's current majormode system.

Today, even if filters.rc is not sourced at runtime, vile includes a builtin majormode called cmode that is defined internally like so:

> define-mode c
> ~with define-submode c
> ts=8
> sw=8
> cindent
> cindent-chars ":#"
> suffix "<complex_regexp_for_c_c++_file_suffixes>"
> filtername 'vile-c-filt'
> ~endwith

This builtin majormode can produce some surprising results when editing C source files. In particular:

> set ts=<val> ; <-- has no effect, use "setl" instead

What's more these settings may be anathema for the coding style in effect for a given software project. Override these settings in the vile startup file to suit your needs/taste, like so:

> define-mode c
> ~with define-submode c
> ts=4
> sw=4
> nocindent
> ~endwith

## Filtering "man" pages

When used in conjunction with the vile-manfilt program (supplied as source file filters/manfilt.c), either vile or xvile may be used to filter and view manual pages. xvile will even display (with your font set properly) certain portions of the manual page text in bold or italics as appropriate.

The file macros/manpage.rc (found in the vile source directory, with portions copied below) contains a macro which is bound to ^X-m. It will prompt for a manual page, filter it, attach attributes and display it in the current window. The text of manpage.rc may be either incorporated verbatim into your .vilerc file or may be read from your .vilerc as follows:

> source "manpage.rc"

This assumes that you have moved the manpage.rc file to a directory known to vile (automatically handled by "make install" on Unix or, alternatively, by pointing the VILE_STARTUP_PATH env var to the directory where this file resides). If you do all of this but use vile rather than xvile, you will still end up with a legible man page, albeit without the spiffy formatting.

The manual page filtering program may also be used to look at other text formatted with nroff. From the vile source directory, for example, the following command will format and filter the vile manual page (which is nroff source).

> :e !nroff -man vile.1 | vile-manfilt

Once loaded, it will look rather funny. There will be Cntl-A characters scattered throughout the text followed by a sequence of digits followed by one or more uppercase letters followed by a colon. These Cntl-A sequences specify how the text following the colon should be attributed. The vile command "attribute-cntl_a-sequences-til" (bound to ^A-A) may be used to format a region of text containing these sequences. To continue our example, the following command will translate this representation of attributed text into one which is more pleasing to look at.

>     ^A-AG

Note that macros/manpage.rc also provides a macro that attaches attributes to any man page displayed in the editor's current buffer.

## Working in a project hierarchy

vile includes several features that enable quick access to many files spread over a directory hierarchy, as described below.

### Directory navigation

vile provides several commands that manipulate an internal directory stack:

>     :dirs
>     :dirs-add   dir
>     :dirs-clear
>     :popd       [ {+|-}n ]
>     :pushd      [ dir | {+|-}n ]

dirs
  lists the directory stack in a scratch buffer. Note that the directory stack is zero-based. Precede this command with an argument to kill the buffer. "dirs-clear" clears the stack and kills the scratch buffer. "dirs-add" adds a directory to stack[top - 1], but does not affect cwd, which makes this command useful for initializing the stack from a macro or startup file.
popd
  removes entries from the directory stack. With no arguments, removes the top directory from the stack and performs a cd to the new top directory.
  +n
    removes the nth entry counting from stack top.
  -n
    removes the nth entry counting from stack bottom.
pushd
  adds a directory to the top of the directory stack or rotates the stack, making the new top of the stack the current working directory. pushd honors CDPATH, when set. With no arguments, pushd exchanges the top two directories. Otherwise:
  +n
    rotates the stack so that the nth directory, counting from stack top, is at the top.
  -n
    rotates the stack so that the nth directory, counting from stack bottom, is at the top.
  dir
    adds dir to the directory stack at the top, making it the new current working directory.

If pushd or popd is successful, a "dirs" is performed as well.

### Hierarchical tags

Assume the following directory hierarchy:

>            root
>           /  |  \
>          /   |   \
>        lib  src  include

Assume also that most of the development work takes place in the "src" directory and that this is a C/C++ project.

Once an appropriate tags file has been created in the src directory (using the ctags program), vile's tags interface provides quick access to the most frequently modified project files. But what about the source files in the "lib" and "include" directories? Is it possible for vile's tags interface to access the C/C++ files in the aforementioned directories when the editor's cwd is set as "src"? The answer is an emphatic "Yes". This can be done using at least two different mechanisms.

### Exuberant ctags

Assuming the Exuberant Ctags program is available (written by Darren Hiebert), the simplest method is as follows:

1) cd to the project root dir and issue this ctags command:

> ctags -R . '*.[ch]' '*.cpp'

This command drops out a tags file in the root directory that includes tags for all three subordinate directories. Repeat this step as necessary whenever significant changes are occur within the project hierarchy.

2) modify the vile startup file (vile.rc or .vilerc) to include this setting:

> set tagrelative
> set tags="../tags"

vile's tags lookup features now provide one-keystroke access to symbols in all project source files, provided that the editor's current working directory is set as either src, include, or lib.

It's important to note that Exuberant Ctags has been ported to many hosts (including VMS) and supports many languages other than C.

### Standard ctags

Use this recipe when working with the standard ctags program (available on virtually all Unix hosts):

1) cd to the project root dir and issue this ctags command:

> ctags src/*.[ch] src/*.cpp lib/*.[ch] lib/*.cpp include/*.h

this command drops out a tags file in the root directory that includes tags for all three subordinate directories. Repeat this step as necessary whenever the lib or include directory contents change.

2) modify the vile startup file (vile.rc or .vilerc) to include this setting:

> set tagrelative
> set tags="../tags"

This method achieves the same one-keystroke symbol access as described for Exuberant Ctags.

### File/Directory traversal (win32/Unix hosts only)

vile's capture-command (bound to ^X-!) includes an interface to the Unix find command (or equivalent clone) that permits the user to access a large number of files or directories spread across an arbitrarily complex hierarchy. This feature requires a small amount of configuration before it can be used.

To begin with, specify a directory hierarchy via the $findpath state variable using this syntax:

> setv $findpath="<dir>[<delim><dir>]..."

where <delim> is ':' on a Unix host and ';' on a win32 host. If this state var is not set, "." is assumed.

Next, use find-cfg mode to enable the traversal feature. This mode's string argument syntax is as follows:

> [<recursive_token>][,<nonrecursive_token>[,<option>...]]

where:

>     <recursive_token> := an ascii character that triggers a
>                         recursive find.  The selected token may
>                         not be taken from the character set
>                         defined by isalpha().  To use ',' as a
>                         token, escape it with '\'.

>     <nonrecursive_token> := an ascii character that triggers a
>                            nonrecursive find–shares the same
>                            semantic restrictions as the
>                            recursive token.

>     <option>          := {d | f}

Note 1: The "d" option specifies that find should restrict its search solely to files of type "d" (i.e., directories). The "f" option adds a "-follow" operand to the commandline, which directs find to follow symbolic links. Note that -follow is appropriate for the GNU tool chain, SunOS v5.7, and possibly other hosts. Check your local find (1) man page for compatibility.

Note 2: An empty string argument disables find-cfg mode.

Note 3: Most versions of find do not support nonrecursive operations. The one known exception is GNU's find.

### Examples (file traversal)

Assume the same project hierarchy as was used in the description of "Hierarchical tags" above. Assume also that the path to the project root is /local/proj/root and that the vile startup file contains these settings:

> setv $findpath="/local/proj/root"
> set find-cfg="$,@"

Then consider this command:

> ^X-!$egrep -n FIXME *.[ch] *.cpp

which spawns this Unix shell command:

> find /local/proj/root '(' -name '*.[ch]' -o -name '*.cpp' ')' \
> -print | egrep -v '((RCS|CVS)/|/[Tt][Aa][Gg][Ss]$)' | \
> xargs egrep -n FIXME

and this win32 shell command:

> find /local/proj/root '(' -iname '*.[ch]' -o -iname '*.cpp' ')' \
> -print | egrep -vi '((RCS|CVS)/|/tags$)' | \
> xargs egrep -n FIXME

The net result is that capture-command has been used to find the string FIXME in all C/C++ source files located in the project hierarchy. The results of this search are placed in the editor's [Output] buffer. Each occurrence of the string can be accessed via the error finder's ^X-^X binding. Note that the above shell commands are crafted to ignore files stored in RCS/CVS directories and to ignore the files created by ctags.

If it's preferable to use a nonrecursive find operation and the GNU find utility is available on your host, you might try this on a Unix host:

> setv $findpath="/dir1:/dir2:/dir3"
> set find-cfg="$,@"
> ^X-!@egrep -ni copyright *.txt

which spawns this Unix shell command:

> find /dir1 /dir2 /dir3 -maxdepth 1 -name '*.txt' -print | \
> egrep -v '((RCS|CVS)/|/[Tt][Aa][Gg][Ss]$)' | \
> xargs egrep -ni copyright

Or, correspondingly, on a win32 host:

> setv $findpath="/dir1;/dir2;/dir3"
> set find-cfg="$,@"
> ^X-!@egrep -ni copyright *.txt

which spawns this win32 shell command:

> find /dir1 /dir2 /dir3 -maxdepth 1 -iname '*.txt' -print | \
> egrep -vi '((RCS|CVS)/|/tags$)' | xargs egrep -ni copyright

Of course, if your version of find doesn't support the "-maxdepth" option, this feature won't work. The workaround is simple–upgrade to the GNU version of find.

### Examples (directory traversal)

Suppose all you really desire is access to the names of the directories embedded within a project hierarchy. This might be useful for Perl hackers who want to manipulate a directory's contents with specialized scripts. To obtain this functionality, specify find-cfg's "d" option. As a contrived example:

> setv $findpath="/local/proj/root"
> set find-cfg="$,@,d"
> ^X-!$ls -ld

yields this shell command (on a Unix host):

> find /local/proj/root -type d -print | egrep -v '(RCS|CVS)/' | \
> xargs ls -ld

### File/directory traversal notes

- An astute win32 user will note that the above traversal examples rely on utilities (find, egrep, and xargs) that aren't available by default on a win32 host. This problem can be readily remedied by installing the cygwin emulation package, which includes a large number of fully functional GNU tools. Cygwin can be obtained from Redhat at http://www.sourceware.org/cygwin/.
- The most recent file/directory traversal shell command created via capture-command is stored in the $find-cmd state variable. This can be a useful debugging aid.
- The $findpath state variable inherits its initial value, if any, from the VILE_FINDPATH environment variable.

## Writing your own filters

Filters may be written as either an external program or with the Perl interface. Both the manual page filter and the C program colorizer are examples of external programs which do the filtering. The hgrep.pm perl script is an example of a filter which uses the vile's interface to Perl.

Regardless, the goal of the filter is to embed in the text a control sequences which describe how the subsequent text should be attributed by the vile command

>     attribute-cntl_a-sequences-til

or, preferably

>     attribute-from-filter-til

(See above for examples of how to use this command.)

The control sequences take the following form:

>     ^A<Count><Attr>:

<Count> is a sequence of digits representing the number of characters following the ':' to be attributed.

<Attr> is a sequence of characters which indicates how to attribute the required number of characters following the ':'. The following sequences are recognized by vile:

>     I               -- italic
>     B               -- bold
>     R               -- reverse (or inverse) video
>     U               -- underline
>     C<hex digit>     -- color number (one of 16)
>     H<command>\0     -- hypertext command
>     M<command>\0     -- meta information (ignored)

The <command> for hypertext commands may be any sequence of characters except for newlines and null characters. A null character must terminate the hypertext command. The command should be a valid vile command such as you might enter into your .vilerc file.

The attribute characters may be used together in any combination. So, for example, you could use the following to make some text appear both bold and italic:

>     ^A15IB:Bold and italic

## Hypertext

Vile does not currently supply a builtin key binding for executing hypertext commands. The following macro and key binding will cause the space bar to be bound to a macro which will follow a hypertext link when the cursor is placed on top of it. If no hypertext link is present, then the normal default action of advancing one character to the right is taken:

> 22 store-macro
> ~force execute-hypertext-command
> ~if &not $status
> ~force forward-character-to-eol
> ~endif
> ~endm
> bind-key execute-macro-22 ' '

[ TODO: Maybe we should just add a little bit of code to make this the default binding for space bar? Or is some other key binding preferable? In any event, it'll only take 7 or 8 lines to do the job... ]

Here is another example, which gives a choice between following a hyperlink, e.g., as embedded in which-source, or showing its content:

> bind-key execute-hypertext-command ^X-z
> bind-key show-hypertext-command ^X-Z

When using xvile, double clicking on a hypertext link will cause the hypertext command to be executed. If no hypertext command is associated with the text under the cursor, the default action of selecting the word under the cursor will occur instead.

## Debugging features

popup-msgs
  vile's popup-msgs mode (:se pm) pops up a buffer that displays all text written to the editor's message line. This mode, when used in conjunction with the write-message command, provides an effective mechanism for debugging macros. Type ":se nopm" to disable popup-msgs.
~trace/$debug
  use vile's builtin macro tracing to see what the macros really do. The ~trace command sets the $debug variable, which controls whether vile appends to the [Trace] buffer a copy of each line executed, the local variables saved/restored and intermediate states of expression evaluation. To activate tracing, use:

  > ~trace on

  or

  > setv $debug true

  To disable tracing, use:

  > ~trace off

  or

  > setv $debug false

which-exec <file>
  displays the full path that the editor's shell will use to exec <file>.

  Note 1: The list of possible paths is taken from all directories specified in $PATH + $libdir-path.

  Note 2: On non-Unix hosts, a file suffix is required (e.g., ":which-exec copy.exe", not "which-exec copy").

  Note 3: Specify a numeric argument to force vile to popup a buffer that displays all possible paths (e.g., "2:which-exec fmt"). For example:

  >     Show which executable-paths are tested for:
  >             fmt
  >     ("*" marks found-files)

  >     $PATH
  >             /usr/local/bin/fmt
  >             /users/tom/bin/fmt
  >             /users/tom/com/fmt
  >             /usr/sbin/fmt
  >             /sbin/fmt
  >     *       /usr/bin/fmt
  >             /bin/fmt
  >             /usr/games/fmt
  >             ./fmt
  >     $libdir-path
  >             /usr/lib/vile/fmt

which-source <file>
  displays the full path that will be used to source <file>>.

  Note 1: The list of possible paths is taken from the same directory hierarchy described in the "Invocation" help topic.

  Note 2: Specify a numeric argument to force vile to popup a buffer that displays all possible paths (e.g., "2:which-source vileinit.rc"). For example:

  >     Show which source-paths are tested for:
  >             vileinit.rc
  >     ("*" marks found-files)

  >     $cwd
  >             vileinit.rc
  >     $HOME
  >             /users/tom/vileinit.rc
  >     $startup-path
  >     *       /usr/share/vile/vileinit.rc

For debugging syntax highlighting, the following also are useful:

which-filter <majormode>
  Prompt for, and display location of filter program.
which-keywords <majormode>
  Prompt for, and display location of keyword files.
HighlightFilterMsg ^X-q
  Colors the current buffer if a majormode and filter exist for same.
HighlightClear ^X-Q
  Clears the current buffer's color attributes.

## X Window System specifics

If you are using xvile under X11, the following additions are available:

### Mouse Buttons

1 –
  Sets cursor position and the start of the selection when mouse pointer is positioned in any vile window (but not the message line). Clicking on a mode line will set the keyboard focus to the corresponding vile window. Double clicking on a mode line will do the above in addition to clearing the highlighting associated with the current selection.

  Selections may be made by holding button one down and "wiping" with the mouse. Release of the mouse button will cause the selection to be yanked and made available (if desired) for pasting. The region selected may be forced to be rectangular by holding the control key down while wiping with button one depressed. If the wiping motion goes out of the current window, text will be scrolled in the appropriate direction if possible to accommodate selections larger than the window. The speed at which the scrolling occurs will increase with the passage of time making it practical to select large regions of text quickly.

  Individual words or lines may be selected by double or triple clicking.

2 –
  Paste the current PRIMARY selection. With a shift modifier, it pastes at the mouse position, otherwise it pastes at the last text cursor position before selecting.
3 –
  Extend the current selection. As with button one, the selection may be adjusted or scrolled by holding down button three and wiping with it. Selections may be extended in any window open to the same buffer as which the selection was started in.

As described below in the "Scrollbars" section, the buttons are modified by the control key as follows, when used on a scrollbar:

Ctrl-Button-1 splits the clicked-on window into two windows.
Ctrl-Button-2 deletes the clicked-on window.
Ctrl-Button-3 makes the clicked-on window the only window.

Areas of selected text can be operated on with any vile operator command, in conjunction with the special "motion" command '^S', which applies the operator to the selected region. For example, after selecting text with the mouse, it can be converted to uppercase with ^A-u^S. Remember that some operators (e.g. the shell-filtering operator, '!') are only capable of working on full lines of text.

### Clipboard

Data may be exchanged between many X applications via the PRIMARY selection. This selection is set and manipulated as described in the above section entitled "Mouse Buttons".

Other applications, most notably OpenLook applications, use the CLIPBOARD selection to exchange data between applications. On many Sun keyboards, selected text is moved to the clipboard by pressing the "Copy" key and pasted by pressing the "Paste" key. If you find that you can not paste text selected in xvile in other applications or vice-versa, it may well be that these applications use the CLIPBOARD selection instead of the PRIMARY selection. (The other mechanism used among really old applications involves the use of a ring of cut buffers.)

xvile provides two commands for manipulating with the clipboard. These are copy-to-clipboard and paste-from-clipboard. When copy-to-clipboard is executed, the contents of the current selection are copied to the special clipboard kill register (denoted by ';' in the register list). When an application requests the clipboard selection, xvile gives it the contents of this kill register. The paste-from-clipboard command requests clipboard data from the current owner of the CLIPBOARD selection.

Users of Sun systems may want to put the following key bindings in their .vilerc file in order to make use of the Copy and Paste keys found on their keyboards:

> bind-key copy-to-clipboard #-^
> bind-key paste-from-clipboard #-*

### Scrollbars

The X toolkit version of xvile provides default translations similar to the translations for scrollbars found in the Athena widget set. (If you know how to use xterm's scrollbars, you know how to use these scrollbars.) Button one scrolls forward. Button three scrolls backward. The amount of scrolling obtained by these buttons depends on the position at which they were pressed on the scrollbar. Clicking near the top of the scrollbar will scroll the text by a small amount which may be as little as one line. Clicking in the middle will scroll by about half a page. Clicking near the bottom will scroll by a larger amount up to a whole page. Holding either one of these buttons down will cause repeated scrolling.

If simply pressed and released, button two will set the position in the buffer to a position proportional to the location of the pointer on the scroll bar. Button two may be held down to "drag" the slider from one place to another causing text to scroll continuously.

The Motif and OpenLook versions provide scrollbars from their respective widget sets. Both versions have a slider indicating the position of the window over the buffer. OpenLook's slider is fixed in size with little arrows at the top and bottom of the slider. Pressing on one of these arrows will cause scrolling in the appropriate direction. The slider may be "grabbed" and moved by pressing and dragging the middle portion between the arrows. Motif's slider is solid with size varying to indicate the size of the window with respect to the size of the buffer. Any portion of it may be grabbed for movement. There are little arrows at the top and bottom of the scroll bar which may be clicked upon to cause scrolling by one line. In both of these widget sets, clicking on the scrollbar either above or below the slider will cause scrolling by a full page. OpenLook has two additional control areas; the buffer position may be set to either the beginning or end of the buffer by pressing on one of the little rectangular areas at either the top or bottom of the scrollbar.

In all versions built with scrollbars enabled, you can resize windows by moving the border between corresponding scrollbars (with the mouse). The X toolkit version is probably the most functional, with the windows being continuously resized as the mouse is moved. The OpenLook and Motif versions wait until after a position is selected to resize the windows. The OpenLook version is perhaps the least functional; there is no visible indication (other than the position of the mouse pointer) to indicate where the new border will be.

Splitting and deleting of windows may also be done with the mouse. In each case the action is selected by pressing one of the mouse buttons over a scrollbar with the control key held down. Button one (with the control key held down) will split the scrollbar and the corresponding vile window with the new border at or near the mouse cursor. Button two (with control key) will delete the scrollbar and corresponding window. Button three (with control key) will make the corresponding window the only window.

### Standard X command line arguments

`-fn fontname` | Font to use (or -font).
`-rv` | Use reverse video (also -reverse).
`+rv` | Don't use reverse video.
`-display disp` | Display to run xvile on.
`-fg color Foreground` | color (or -foreground).
`-bg color Background` | color (or -background).
`-bd color Border` | color (or -bordercolor).
`-name name` | Application name used for resource lookups.
`-title name` | Name to be displayed in titlebar.
`-geometry geom` | Initial window dimensions in columns and rows.
`-iconic` | Start xvile iconified.
`-xrm Resource` | Specify or change an X resource internal to xvile.

### Additional xvile command line arguments

`-class name` | Class name used for resource lookups.
`-fork` | to spawn xvile immediately on startup
`+fork` | to force xvile to not spawn on startup
`-leftbar` | Put scrollbar(s) on left.
`-rightbar` | Put scrollbar(s) on right (default)

### Setting a new process group

Some systems and/or some shells and display managers seem to want xvile to run in its own process group, to help isolate its signals and actions from the signals and actions of the parent process (i.e. the shell or window manager that starts xvile). xvile can be forced into its own process group with the "new-process-group" command, which one would put in the .vilerc file. Using this will cause a call to "setpgrp()" or "setsid()". This behavior is not the default because a) it can't be undone, and b) it seems undesirable on some systems, in that xvile cannot be suspended and put in the background after startup if it's in its own group.

Additionally, if given a count as argument, this command will cause xvile to fork(), and the parent to exit before the new process group is set by the child. This will further isolate it from its process environment (and in fact will move xvile into the background if started from the shell).

The "new-process-group" command has no effect in non-X11 versions of vile.

### X Resources

Name | Description
--- | ---
font | Font to use.
geometry | Window dimensions in characters.
iconName | Name of icon for decorating window frame. If set, this overrides the compiled-in pixmap which is used for the window manager's hint of the icon pixmap.
charClass | Character classes for multiple click selections. The format is identical to that of xterm(1).
multiClickTime | How long between clicks (in milliseconds) to be accepted as a multi-click.
foreground background | Foreground/Background color of the main xvile text area.

cursor.foreground
cursor.background

Foreground/Background color of the cursor. By default the cursor location is indicated by inverting the foreground and background colors of the cell the cursor is over. Thus the color of the cursor will vary depending upon location. Use of these subresources will cause the cursor to maintain constant coloration of the user's choosing, and may make it easier to see when it appears in a "highlighted" or "selected" area of text.

menuBackground menuForeground | (Compile-time optional feature) resources for setting the background and foreground colors of menubar and pulldown menus.
modeline.focusForeground modeline.focusBackground | Foreground/Background color of the mode line corresponding to the window with focus, i.e. the "current" window.
modeline.foreground modeline.background | Foreground/Background color of mode lines corresponding to windows without the keyboard focus. modeline.background is also used for the scrollbar borders and resize grips.
forkOnStartup | If true, xvile forks after initialization.
focusFollowsMouse | If true, the "current" window is the window inhabited by the mouse; no clicking is necessary to change windows.
pointer.foreground pointer.background | Foreground/Background color of the pointer.
pointer.normalShape pointer.watchShape | Set the shapes for the normal and watch pointers respectively.
scrollbarOnLeft | Either true or false; control the placement of the scrollbars. By default, scrollbars are placed on the right.
scrollbarWidth | An integer indicating the width of the scrollbar.
scrollbar.foreground scrollbar.background | Foreground/Background color of the slider or one of the colors of the slider if a stippled pixmap is used. To force the slider to be only the foreground color, you should set sliderIsSolid to true. (X toolkit version only)
scrollbar.sliderIsSolid | If false, indicates that the stippled pixmap should be used to simulate grey. This will be best on monochrome displays. True works better for color displays. True indicates the slider will be displayed in the foreground color, shaded to look three-dimensional, if possible. (X toolkit version only)
scrollRepeatTimeout | Amount of time in milliseconds to wait initially before repeating scroll when button one or three are held down. (X toolkit version only).
scrollRepeatInterval | Amount of time to wait between repeating subsequent scrolls. This parameter is also used for controlling the speed at which selections are scrolled.
selection.foreground selection.background | Foreground/Background color of the selection regions. "foreground" is the color that the text is displayed in.
persistentSelections | If true (the default), highlighting of the selection will persist even when button one is pressed to set the cursor position. A false value will behave more like other X applications in which display of the selection is lost as soon as button one is pressed.
selectionSetsDOT | If false (the default), the cursor will be restored to its previous position prior to making the selection. If true, the cursor will be positioned at the location of the mouse at the end of making a selection (usually at either the start or end of a selection).

blinkInterval

An integer indicating the time in milliseconds to wait before blinking the cursor. A positive value will cause the cursor to always blink. Setting blinkInterval to zero will cause the cursor to never blink which may be useful on some display servers connected to very slow networks. The disadvantage of setting it to zero is that it is sometimes hard to tell where the cursor is when situated at the boundary of a highlighted region. A negative value (which is the default) will cause the cursor to blink only when situated in a highlighted region such as a selection. This will make the cursor visible no matter where it is.

color.fcolor0,
color.bcolor0, ...,
color.fcolor15,
color.bcolor15

When doing text attribution with the "attribute-cntl_a-sequences-til" command (bound to ^A-A), the attribute may be of the form "Cn", where 'n' is a hexadecimal digit. This digit picks one of the 16 fcolor/bcolor pairs set up in the color subresource. For example, if the buffer contained the text: ^A6C3:foobar then after the ^A-A command was applied, the leading "^A3C3:" would be gone, and the word "foobar" would appear in the foreground and background colors specified by color.fcolor3 and color.bcolor3. The fcolorN resources have default values corresponding to the ANSI convention, while bcolorN default to the window background. If you wish to set bcolorN for special effect, you should add this to your .vilerc file set bcolor=fcolor to tell xvile to use the bcolorN resources when displaying attributed text. Otherwise, setting bcolor will change the window background, as in the termcap and similar versions of vile.

menuHeader menuEntry | The names given to the menu header and entries, respectively.
menuHeight | resource controlling the Athena menu-height
openIm | true if input method should be opened (default: true)
inputMethod | input method to use (default: "")
preeditType | pre-edit type (default: "OverTheSpot,Root")
wheelScrollAmount | Amount to scroll for a wheel mouse, per button-press.

### Sample .Xdefault entries

You may or may not want to use the following as a starting point for the "XVile" section of your .Xdefaults or .Xresources file. If you have a monochrome display server, you will probably not want to use any of the color specifications. You may, however, wish to set up a blinking cursor, using "blinkInterval" (see above).

> XVile*font: -*-courier-medium-r-normal-*-*-*-75-75-m-70-iso8859-*
> XVile*geometry: 80x54
> XVile.background: darkslategrey
> XVile.foreground: honeydew
> XVile.scrollbar.foreground: firebrick2
> XVile.scrollbar.sliderIsSolid: true
> XVile.selection.background: aquamarine4
> XVile.selection.foreground: honeydew
> XVile.cursor.background: yellow
> XVile.cursor.foreground: darkslategrey
> XVile.modeline.Background: steelblue
> XVile.modeline.foreground: darkslategrey
> XVile.modeline.focusForeground: yellow

### Fonts

To change the font on the fly, use the ':setv' command to set the $font variable, with ":setv $font <fontname>".

At present, only xvile is capable of displaying bold and italic (or underline) text associated with attributes. It is anticipated that other versions of vile will catch up to the best of their ability. Users of xvile will find that the italic font in particular is not always available with the font that they've chosen (or have had chosen for them). If an italic font is unavailable, xvile will underline text which is meant to be italic. The program xfontsel is quite useful for determining which fonts are available on your display server and whether there are corresponding bold and/or italic fonts available.

Here are some tips on using xfontsel to find an appropriate font.

1. Set rgstry (registry) to iso8859
2. Set spc (spacing) to either "c" (cell font) or "m" (monospaced font). You will be more likely to find a font which will work as italic if you choose a monospaced font, however. You definitely do not want a proportional font.
3. Now pull down the slant menu. Select either "i" (italic) or "o" (oblique). If neither of these are available, go back to step 2 and choose a different spacing.
4. Set avgWdth (average width) next. If you divide the value you've chosen by ten, this will be width of a glyph in the font in pixels.
5. Set wght (weight) to medium. If you have a hard time seeing the characters, you might want to choose bold, but xvile will not be able to use the bold font for displaying bold text. It will be forced to overwrite text that it wants to be bold with the text shifted by one pixel. This works fairly well for larger fonts.
6. Set fmly (family) to a value according to personal taste. By this step, you might not have any choice on the matter anyway.
7. If only one font is available at this point, the other fields don't matter that much. Otherwise set these according to taste.
8. Go back to the slant menu and change either the "i" or "o" to "r".

This will be the font to use. xvile will be attempt to get the italic font when needed by substituting either "o" or "i" for the "r".

If the above seems too tedious, you can just try the following font which (on many display servers) is pretty close to the size of the default font that xvile will start up with.

> -*-courier-medium-r-*-*-*-*-*-*-*-70-*-*

You can try it out by issuing the appropriate "set font" command from xvile. For longer term use, you will probably want to put it in your .Xdefaults file. It will look something like this:

> XVile*font: -*-courier-medium-r-*-*-*-*-*-*-*-70-*-*

You may also set the font from your .vilerc file. This is not recommended, however, as you lose the ability to choose a different font from the command line or resource file. It may also cause the xvile window to be unnecessarily resized during initialization.

## DOS specifics

The .vilerc file is called vile.rc under DOS.

vile is perfectly happy (and even tries very hard) to use the UNIX-style "forward-slash" ('/') as a path delimiter. Entering the "backslash" ('\') will work, but you should be aware that vile uses this character as an escape mechanism for entering special characters (e.g. "\t" for TAB) in strings. As an example setting "tags" to "tags ..\tags" will not have the intended result. Instead, use "tags ..\\tags" or better, "tags ../tags".

vile should leave your screen in the mode you're in when you enter it, unless you explicitly change it to a different mode with a "set sres=" line in your vile.rc, or if you use a command line option to change it. Command line options consist of a dash followed by one of the following selectors (these are the same values that can be assigned to "sres"). These values are supported by the DOS (borland.c) terminal driver: "2", "25", "4", "43", "5", "50", "6", "60"

If you shell out in 50 line mode, make sure you are in 50 line mode before you exit the dos shell, otherwise you end up with a 50 line edit window with only the top 25 displayed.

The vile.rc file can be located in the same directory as your binary executable, since vile searches the $PATH for this file.

All file globbing, including from the command line, is done using UNIX shell-style wild-carding conventions.

The expansion of the ':' character in user input, which normally expands to the "word under the cursor", is suppressed for DOS, due to the conflict with the drive-specifier syntax (e.g. "c:\foo"). The character '&' may be used for this instead.

In any version of vile there is a command, "set-dos-mode", which will a) strip all carriage-return ('^M') characters from the ends of lines in the buffer and b) set the "dos" mode so that carriage returns are appended when the file is written. There is also a corresponding "set-unix-mode" command, which strips carriage returns, and forces "nodos" mode, so that they don't come back when you write the file. In both cases, "dos" mode becomes a so-called "local" mode, so that the rest of your buffers will be unaffected. See also the discussion of "recordseparator" mode.

## VMS specifics

The .vilerc file is called vile.rc under VMS

Reading from a pipe works; writing to a pipe is not implemented.

As is true for DOS, the expansion of the ':' character in user input is not supported due to conflicts with filename syntax delimiters. Use '&' instead.

### Paths

vile recognizes either VMS- or UNIX-style pathnames and '~' is supported as a shortcut for SYS$LOGIN (e.g., :e ~/login.com). However, filename completion only works for UNIX-style pathnames, since those allow us to implement directory and filenames in the same syntax.

CDPATH directory lists are delimited with a comma and only the following components may be included:

- rooted logicals terminated with ':'
- directories terminated with ']'

Example:

>     $ CDPATH :== dev$diska:[home],rooted$build_dir:

### Command-Line Switches

vile accepts these command-line options in addition to the standard ones:

Option | Description
--- | ---
-80 | force 80-column mode (N/A for VT52 terminals)
-132 | force 132-column mode (N/A for VT52 terminals)

### Modes

Name | Description
--- | ---
allversions | Show all versions of files in response to filename completion or wildcards on the command line. Normally this is off. (U)
flash | This feature is implemented by setting the screen video to reverse color and then normal. If this sequence of changes is incompatible with your terminal preferences, avoid this mode and use vtflash instead.
record-format | Specify format of files that vile writes. If undefined, vile will attempt to use the format of an older version of the file, or "stmlf" if none exists. (B)
record-attrs | Specify record attributes of files that vile writes. If undefined, vile will attempt to use the format of an older version of the file, or "cr" if none exists. (B)
record-length | Maximum record size, used if record-format is "fixed" or "vfc". (B)

### Variables

Name | Description
--- | ---
$sres | Switch between 80- and 132-column screen resolutions by setting this variable to either NORMAL or WIDE (e.g., :setv $sres=wide).

### Default key maps

With respect to VT100 and later terminal types, the editor assumes a vt220 keyboard and maps special keys to their closest vile counterpart (e.g., "Remove" mapped to vile's "Delete"). Some vt220 keyboard special keys have no obvious counterpart, in which case, these mappings apply:

>     PF1-PF4  =>  F1-F4,
>     Help     =>  F15,
>     DO       =>  F16.

## Win32 specifics

The editor may be invoked/built as a console or GUI application. The former is known as vile.exe and the latter as winvile.exe . For the remainder of this section of the help file, a generic reference to "vile" refers to both the console and GUI editor, unless otherwise stated.

### Heritage

The Win32 version of vile supports almost all of the features and changes listed directly above in the section entitled "DOS specifics", with the exception that the editor's screen resolution cannot be changed using explicit -43, -50, etc. command-line switches or via the sres command.

### GUI Command-Line Switches

Winvile accepts these command-line options in addition to the standard ones:

Name | Description
--- | ---
-fn <fontspec> | Initial font (or -font). The "Winvile Font" section below describes <fontspec> syntax.
-geometry <C>x<R> | Initial window dimensions in Columns and Rows (for example "-geometry 80x30"). Be aware that the specified geometry may not exceed the bounds of the current desktop screen. Note also that $pagelen and $pagewid may be used to change winvile's dimensions.
-i | Check if the remainder of the command-line (after this option) is a readable filename which may contain embedded blanks. If so, change current directory to match this filename. This is used to make shortcuts such as "Send To" work nicely.

### Console Command-Line Switches

Vile accepts these additional command-line options:

Name | Description
--- | ---
-console | Start editor in a new console environment if stdin is redirected (i.e., input is taken from a redirected file or from a pipe). If this option is not set when stdin is redirected, console mouse features are unavailable (this problem is most often encountered on a Windows NT host).

### Pipes

Internally, vile uses two radically different mechanisms for piping data to and from the shell. One mechanism uses temporary files and the other simply calls native Win32 services. This dichotomy exists because the NT shell (cmd.exe) handles native pipes cleanly, but command.com, Microsoft's 16-bit Win9X/WinME shell, does not. The mode variable w32pipes determines which mechanism is used.

On WinNT/Win2K hosts, w32pipes is set by default and vile's pipe operations are implemented via Win32 services. On Win9X/WinME hosts, this mode is disabled by default and the editor falls back to temp files. Take note that 32-bit shells (e.g., Cygwin's bash, MKS's shell) properly handle native pipe operations on Win9X/WinME hosts. In that context, it's appropriate and highly desirable to manually enable "w32pipes" (e.g., "se w32pipes").

******* Warning ********
If w32pipes is enabled and command.com initiates a pipe I/O transaction on behalf of the editor, vile will almost certainly hang. See the "Shell" topic below to learn how to specify the editor's default shell.

### Paths

vile recognizes either DOS- or UNIX-style pathnames and '~' is supported as a shortcut for $HOME (e.g., :e ~/vile.rc).

CDPATH directory lists are delimited with a semicolon.

### Shell

When a filter, pipe, or explicit shell command requires execution of an external process, vile invokes an instance of the shell specified in the $COMSPEC environment variable. This default may be overridden by setting $shell from within vile.rc . Example:

> set-variable $shell 'c:\usr\binw\sh.exe'

As is true on other hosts, external processes are normally started under the control of a shell. To forego the shell entirely, prefix the command string with "start ". Example:

> :!start calc # start the windows calculator

Finally, it may be necessary to pass one or more flags to the shell invoked via the :sh command (e.g., force execution of a special login script). Passing such flag(s) via $shell is not a workable solution. Instead, use a macro similar to the following that supercedes the builtin :sh command:

> store-procedure sh
> ; pass -L (login) flag to MKS shell, assumes sh is
> ; reachable from $PATH
> ~local %sh
> setv %sh="sh -L"
> ~if &seq $progname "winvile"
> 1 shell-command &cat "start " %sh
> ~else
> 1 shell-command %sh
> ~endif
> ~endm

In the example, the "1" preceding "shell-command" tells winvile to suppress the

> press any key to continue

prompt which it would normally use when the command completes. Without the prompt, the console window which winvile opens to run a shell command will close by itself.

### Cygwin's Bash Versus Console vile

Using Cygwin's bash as vile's shell works well, with one exception. When console vile is invoked from a bash command line, typing ^C or Control+Break within the editor causes an immediate exit (no data saved). As it turns out, bash's signal handling is crafted to work best with other Cygwin programs (ls, wc, etc.) and not with native Win32 apps. A simple workaround is as follows:

1. obtain and install the ash shell, which is included with the Cygwin distribution. Note that ash is installed as sh.exe .
2. edit .bashrc (or equivalent config file) and add this function:

   > function vile
   > {
   > sh <<- ENDIT-
   > vile $@
   > ENDIT
   > }

   When console vile is subsequently invoked from a bash command line, the editor will be started by sh, which does not suffer from the problem described above. The only drawback with this solution is that $@ splits filenames containing embedded spaces.

### Mouse (GUI and Console)

Selecting and dragging with the left mouse button yanks text to the unnamed register. Press a control key during the selection to sweep out a rectangular region. Paste the selected text using the second (middle) mouse button. Clear a selection by clicking on a modeline.

Resize a window by dragging its modeline up/down.

Change vile's window focus via left mouse button clicks (when multiple windows are displayed).

Select individual words or lines with a double or triple click.

Note that console vile has zero mouse functionality if the parent command prompt window (aka DOS box) is configured with QuickEdit Mode enabled. QuickEdit is accessed like so:

>     system menu->Properties->Options Tab

### Winvile Mouse

Pressing the right mouse button pops up a menu of editor commands. These are predefined:

Menu entry | Description
--- | ---
Open | executes the "winopen" command (described below).
Save As | executes the "winsave" command (described below).
CD | executes the "wincd" command (described below).

Favorites

executes "winopen $favorites", which starts a common open dialog box that browses the Windows Favorites folder. This feature is especially useful when folder shortcuts are added to the Favorites folder via the Windows Explorer's "Add To Favorites" feature. Once folder shortcut(s) have been created in this manner, winvile's "Favorites" menu provides two-click access to the contents of any local or network-based folder.

Font | described below.
Menu | disables the popup menu and instead transforms the right mouse button into a hot key that copies the contents of the unnamed register to the clipboard. When the popup menu is disabled, selection with the left mouse, followed by a right mouse click, provides a quick means of copying highlighted blocks of text to the clipboard.
Undo | Bound to undo-changes-backward.
Redo | Bound to redo-changes-forward.
Cut | deletes current text selection into unnamed register and copies same to clipboard.
Copy | copies the current text selection to both the unnamed register and the clipboard.
Paste | pastes clipboard contents (if text) into current buffer.
Delete | deletes current text selection into unnamed register.
Select All | selects all text in the current buffer.

The first six popup menu entries are added to the system menu (in the upper left corner of the window). The system menu also includes:

- two selections that support the traditional Windows printing interface.
- a "Recent Files" menu that lists the last N files opened/created by the editor. Any file selected from this list is immediately opened for editing. This feature is disabled by default, but can be configured via the "recent-files" mode.
- a "Recent Folders" menu that lists the last N folders visited via an explicit or implicit cd. Selecting a folder from this list is equivalent to executing ":cd <foldername>". This feature is disabled by default, but can be configured via the "recent-folders" mode.
- a "Menu" command that disables/re-enables the aforementioned popup menu.

### Clipboard

There are several ways to copy to/from the clipboard:

- Copy data from the unnamed register to the windows clipboard via the copy-unnamed-reg-to-clipboard command (bound to Alt+Insert).
- Copy data from a named register or region to the clipboard (a la vile's ^W operator) via the copy-to-clipboard-til command (bound to Ctrl+Insert).
- The paste-from-clipboard command copies data from the clipboard to the current buffer (bound to Shift+Insert).
- Finally, the cut-to-clipboard command deletes the current text selection and copies same to both the clipboard and the unnamed register (bound to Shift+Delete).

Some examples, assuming <CI> => Ctrl+Insert and <AI> => Alt+Insert:

>     4yy<AI>  ;copy 4 lines from unnamed reg to clipboard
>     "a<CI>   ;copy register 'a' to clipboard
>     "b<CI>   ;copy register 'b' to clipboard
>     <CI>3w   ;copy 3 words to clipboard

The swap-clipboard-keys command swaps the commands bound to Ctrl+Insert and Alt+Insert.

### OLE Automation

Winvile may be invoked as an OLE automation server and thereafter controlled by an OLE client. Refer to the file doc/oleauto.doc for further details. Additionally, the OLE client "visvile.dll" provides a mechanism for substituting winvile as the default Developer Studio editor. Refer to the file doc/visvile.doc for detailed information.

### Winvile Font

Winvile's font may be set via a command-line switch or from within the editor by modifying the built-in $font state variable. In either case, a <fontspec> string describes the desired font, where:

>     <fontspec>  :== [<face>,]<size>[,<style>]
>     <face>      :== font-name
>     <size>      :== point size (as an integer)
>     <style>     :== { bold | italic | bold-italic }

Note 1: if <style> is unspecified, "normal" is assumed.

Note 2: if <face> contains a comma, escape it with '\'.

Note 3: if <face> is omitted, the current font is modified.

Note 4: if <face> contains spaces and the font is set from the command-line, delimit <fontspec> as appropriate for the current shell/desktop environment.

Note 5: <face> must be fixed pitch. To obtain a list of all fixed pitch fonts on the current win32 host, invoke winvile and browse the "Font" dialog box accessible from the system menu (accelerator key is ALT+<space bar>+f).

>     Cmdline Examples                Internal Examples
>     ****************                *****************
>     -fn 'Letter Gothic,8'           :setv $font r_ansi,7
>     -font r_ansi,8,bold             :setv $font 8

>     Vile.rc Example
>     ***************

> ~if &sequal $progname "winvile"
> set-variable $font "courier new,8"
> ~endif

### Winvile registry settings

Winvile uses the system registry to store persistent user settings. If you have specified that it is installed for all users, then the installer creates the key `VI Like Emacs` under

> `HKEY_LOCAL_MACHINE\Software`

otherwise, under

> `HKEY_CURRENT_USER\Software`

In either case, winvile looks for information from these keys under its `VI Like Emacs` key:

- `Environment`
- `MRUFiles`
- `MRUFolders`

Data under `MRUFiles` and `MRUFolders` is maintained by winvile when the corresponding mode recent-files or recent-folders is enabled by setting it to a nonzero value.

winvile looks for environment variables by first using the standard `getenv`, and if that returns nothing, checks its analogous `Environment` key in the registry. winvile uses the registry in this way because it is unreliable for installers to set environment variables directly on Windows.

These environment variables may be initialized by the winvile installers:

- VILE_HELP_FILE
- VILE_LIBDIR_PATH
- VILE_STARTUP_FILE
- VILE_STARTUP_PATH

These environment variables are also useful in winvile:

- VILEINIT
- VILE_ERROR_ABORT

### Winvile Commands

delete-text-selection
  Delete the current text selection to the unnamed register. Bound to Alt+Delete.
purge-recent-files
  Clear the list of files that appear in winvile's "Recent Files" menu.
purge-recent-folders
  Clear the list of folders that appear in winvile's "Recent Folders" menu.
reset-rgb-palette
  Set red/green/blue values to their initial state. If you give a parameter, this is used to specify a single color number.
set-rgb-palette
  Set red/green/blue values for the specified color. Values range from 0-255. Example:

  >     set-rgb-palette red 200 0 0

swap-clipboard-keys
  See discussion of clipboard above.
wincd [dir]
  Launches a standard Windows "Browse Folder" control for the purpose of graphically specifying a new working directory. The optional "dir" argument specifies the initial browse directory (default is current working directory).
winopen [dir]
  Launches the Windows common open dialog box to open one or more files within the editor. The optional "dir" argument specifies the initial browse directory (default is current working directory). Note that if this dialog box opens files outside the editor's cwd, then Windows (and vile) implicitly change the cwd to match that of the opened files. This command is available from console vile.
winopen-nocd [dir]
  Same as "winopen", except the editor's cwd remains unchanged.
winpage-setup
  launch Windows common page setup dialog (winvile only). Use this command to set page attributes before invoking winprint.
winprint
  print current buffer or text selection (winvile only). Note that neither color nor display attributes are rendered at this time.
winsave [dir]
  Launches the Windows common save dialog box to save the current buffer in a file of the user's choice. The optional "dir" argument specifies the initial browse directory (default is cwd). Note that if this dialog box saves a file outside the editor's cwd, then Windows (and vile) implicitly change the cwd to match that of the saved file. This command is available from console vile.
winsave-nocd [dir]
  Same as "winsave", except the editor's cwd remains unchanged.

### Modes

echo-to-clipboard
  all text selected with the mouse is automatically copied to the Windows clipboard. (U)
icursor
  denotes a string that configures the characteristics of an insertion cursor.

  With respect to console vile, this string either specifies a fixed, block cursor height or else sets the block cursor heights in the editor's insertion and command modes. Argument syntax:

  "<fixed_block_height>" or "<insmode_height>,<cmdmode_height>"

  The valid range of <fixed_block_cursor_height> is 0-100 (%). Specifying 0 reverts to the cursor height in effect at editor invocation. The valid range of <insmode_height> and <cmdmode_height> is 1-100.

  With respect to winvile, this string specifies an integer in the range 0-2, which selects one of the following styles:

  >     0 -> fixed block cursor
  >     1 -> cmd mode = block cursor
  >         ins mode = vertical bar
  >     2 -> cmd mode = vertical bar
  >         ins mode = block cursor (U)

popup-menu
  Enables/disables the winvile popup menu. (U)
recent-files
  Specify maximum number of files that may appear in winvile's "Recent Files" menu. Range is 0-20; a value of 0 disables this menu. (U)
recent-folders
  Specify maximum number of folders that may appear in winvile's "Recent Folders" menu. Range is 0-20; a value of 0 disables this menu. (U)
scroll-pause
  An integer indicating the time in milliseconds to wait after scrolling the display. A value of zero, the default, disables this mode. This mode is necessary when rapid scrolling operations cause improper screen refresh by the console editor (should only be a problem with inexpensive video HW). Typical values, if required, are 20-80 (msec). (U)
w32pipes
  See discussion of pipes above. (U)

### Configuring both editors

Some vile commands and modes apply only to winvile and some only to console vile. If you plan to run both winvile and console vile in the context of a single startup file, you'll need to include code similar to this in vile.rc:

> ~if &sequal $progname "winvile"
> set-variable $font "r_ansi,8"
> setv $pagelen=39
> set icursor="1"
> ; etc
> ~else
> set icursor="35,100"
> ; etc
> ~endif

## Differences from vi

Of course, this really isn't vi. Some of the following differences deserve changing, others do not.

The parser for the ':' commands is not very vi-like. For instance, ":e" will prompt you for a file name. Most commands remember their last argument, and will present it as the default reply to their prompt.

The backspace, line kill, word kill, job control, etc. characters are not rebindable. They are, however, read from the tty settings on startup.

There is no expansion of ! in filenames. It is expanded in shell escapes, so the command ":!!" does rerun the previous shell command. Occurrences of '#' and '%' are recognized and expanded to the previous or current filename.

Paragraph and section boundaries, for the {, }, [, and ] commands are configurable, but may not exactly match those in vi. They are expressed via regular expressions. The default regular expressions are quite complex, to support the traditional nroff and troff boundaries. If you are just editing code, you may want to replace them:

> ; set paragraph and section r.e.s for speed on C/C++/perl code.
> set paragraphs=^$
> set sections=^[{^L]

There is no special lisp support. But then, when was the last time you heard of a lisp programmer that used vi?

Of course, ex and open mode aren't there. (Too bad. I'd love to have a companion editor called "exile".)

Most, but not all, of the word-motion-with-operator and end-of-line anomalies have been recreated. One missing anomaly: In vile, "dw" on the last word of a line ending in whitespace deletes the trailing whitespace. vi does not delete the whitespace.

In the real vi, the '_' command is a little-used motion command, which moves the cursor to the start of the Nth next line, where N is the argument given, less 1. So '2_' takes you to the start of the next line. Primarily intended for use in an operator context, as in "2d_", it is always exactly equivalent in those cases to "stuttering" the operator, as in "2dd". Most people know about and use the stuttered form, so in vile, the '_' command is used by default for buffer history. If the regular vi behavior is desired, put the following in the .vilerc file:

> bind-key whole-lines _

## Sample .vilerc

Here's a sample .vilerc, to help get you started with the syntax and style of vile macros:

> source vileinit.rc
> set autoindent
> set fillcol 75
> ; sitting on a brace, run the C code block through indent
> 1 store-macro
> write-file
> filter-til goto-matching-fence "indent -st"
> ~endm
> ; format the current paragraph
> 2 store-macro
> previous-paragraph
> filter-til next-paragraph "/usr/ucb/fmt"
> ~endm
> ; put 'fprintf(stderr,"\n");' into the file, and
> ; position the cursor to add to the string
> 3 store-macro
> ~force next-line
> beginning-of-line
> insert-string "fprintf(stderr, \"\\n\");\n"
> ; six back, because it counts the newline
> 6 backward-character
> insert-chars
> ~endm
> ; insert '> ' in front of every line from here til the end
> ; (this works because without argument, the default action
> ; for "goto-line" is to go to the end of file.
> 4 store-macro
> substitute-til goto-line "^" "> "
> ~endm
> ; spelling keystroke: write the buffer, invoke ispell, and force
> ; it to be read back in.
> 2 store-macro
> ~local $warn-reread
> write-file
> ; suppress "press return" with "1" argument to shell-command
> 1 shell-command &cat "ispell " $cfilname
> ; suppress reread warning
> set nowarn-reread
> replace-with-file $cfilname
> ~endm
> bind-key execute-macro-2 #I
> ; the next three give more mnemonic window commands
> bind-key next-window ^N
> bind-key previous-window ^P
> bind-key split-current-window ^T
> bind-key execute-macro-1 ^A-C
> bind-key execute-macro-2 ^A-F
> bind-key execute-macro-3 ^A-K
> bind-key execute-macro-4 ^A-M

## Notes on TERM types and Scrolling

vile will determine the window size in one of three ways: first it will ask the tty driver (using a TIOCGWINSZ ioctl call under UNIX). Failing that, it will use the LINES and COLUMNS environment variables. As a last resort it will use the size specified in the TERMCAP entry corresponding to the TERM variable. In addition, vile will attempt to support the SIGWINCH signal, which allows it to track changes to the size of the window in which it is running.

If scrolling is really slow, or really ugly (the status line hops around a lot), and you're using a vt102 or compatible terminal that you think should be able to scroll okay, then the problem is almost certainly your termcap entry, which probably doesn't describe scrolling regions adequately. Most standard termcap entries are insufficient. The standard "xterm" entry on many systems falls into this category, and vile contains code that, as a special case, will augment an "xterm" entry with the codes needed for scrolling regions.

In any case, here's a termcap entry that should work:

> dy|vt102|vt-102|dec vt102:\
> :do=^J:co#80:li#24:cl=50\E[;H\E[2J:\
> :le=^H:bs:cm=5\E[%i%d;%dH:nd=2\E[C:up=2\E[A:\
> :ce=3\E[K:cd=50\E[J:so=2\E[7m:se=2\E[m:us=2\E[4m:ue=2\E[m:\
> :md=2\E[1m:mr=2\E[7m:mb=2\E[5m:me=2\E[m:is=\E[1;24r\E[24;1H:\
> :rs=\E>\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h:ks=\E[?1h\E=:ke=\E[?1l\E>:\
> :ku=\EOA:kd=\EOB:kr=\EOC:kl=\EOD:kb=^H:\
> :ho=\E[H:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:pt:sr=5\EM:vt#3:\
> :sc=\E7:rc=\E8:cs=\E[%i%d;%dr:vs=\E[?7l:ve=\E[?7h:

The crucial entries are cs and sr – without both of them, vile will attempt to use dl and al, and will scroll by deleting and inserting a block of lines, giving the ugly behavior you're probably seeing. If you define PRETTIER_SCROLL when building vile, it will alternately delete and insert lines, instead of deleting them all and then inserting them all. This makes it look a little better, but it's slower.

Here is the terminfo entry equivalent to the above termcap entry:

> vt102|vt-102|dec vt102,
> xon,
> cols#80, lines#24, vt#3,
> bel=^G, blink=\E[5m$<2>, bold=\E[1m$<2>,
> clear=\E[;H\E[2J$<50>, cnorm=\E[?7h, cr=\r,
> csr=\E[%i%p1%d;%p2%dr, cub1=\b, cud1=\n,
> cuf1=\E[C$<2>, cup=\E[%i%p1%d;%p2%dH$<5>,
> cuu1=\E[A$<2>, cvvis=\E[?7l, ed=\E[J$<50>,
> el=\E[K$<3>, home=\E[H, ht=\t, ind=\n,
> is2=\E[1;24r\E[24;1H, kbs=\b, kcub1=\EOD, kcud1=\EOB,
> kcuf1=\EOC, kcuu1=\EOA, kf1=\EOP, kf2=\EOQ, kf3=\EOR,
> kf4=\EOS, rc=\E8, rev=\E[7m$<2>, ri=\EM$<5>,
> rmkx=\E[?1l\E>, rmso=\E[m$<2>, rmul=\E[m$<2>,
> rs2=\E>\E[?3l\E[?4l\E[?5l\E[?7h\E[?8h, sc=\E7,
> sgr0=\E[m$<2>, smkx=\E[?1h\E=, smso=\E[7m$<2>,
> smul=\E[4m$<2>,

## Credits

(last updated Jan, 2000)

Since version 6.1, Tom Dickey has been maintaining the "official" source tree, and release responsibilities. Paul Fox maintains the mailing lists.

This code has been written by a lot of people, with help from a lot more sending in bug reports, fixes, and suggestions. The authors of vile are Tom Dickey (dickey@invisible-island.net) and Kevin Buettner (kevin@buettner.to) and Paul Fox (pgf@foxharp.boston.ma.us).

Names appearing within comments in the micro-Emacs source code are: Dave Conroy, Daniel Lawrence, John Gamble, Roger Ove, Dana Hoggatt, Jon Reid, Steve Wilhite, George Jones, Adam Fritz, D.R.Banks, Bob McNamara, and Brian Straight. Dan Lawrence, in particular, did a huge amount of work on the code on which vile is based. vile re-implements and extends many features inspired by his work.

Throughout the years, Tom Dickey has contributed many code improvements and features, and has stabilized vile on both VMS and DOS. After taking over official maintenance duties, Tom coded winvile, added majormodes, added 16-color support, and implemented the majority of the current syntax coloring infrastructure. On an ongoing basis, Tom continues to fix bugs and provide the drive and energy that pushes out one release of the editor after another–no small feat for a product that's supported on multiple hosts.

Kevin Buettner has contributed lots of changes for X11 Toolkit support, as well as the bulk of the selection and video attribute mechanisms, and the bulk of the :map command. Kevin also added autocoloring and a Perl interface to the editor. Rick Sladkey has done great stuff making vile work correctly in Win32 environments, something I might not have done for a long time. Some of the "ex" code is by Steve Kirkendall, author of the vi work-alike "elvis". The regular expression code and documentation is by Henry Spencer. Dave Lemke contributed code for new features, including the original native X11 support. Eric Krohn has done some excellent testing and enhancement. The implementation of rectangles and their operations was inspired by code from the 'notgnu' editor, by Julie Melbin. Patches to support OS/2 came from Charles Moschel and for Windows/NT from Joe Greer and Clark Morgan. Ed Henderson gave us wvwrap, as well as several other useful patches. Chris Coppick created Vileserv. Alex Wetmore contributed stored procedures and vile's initial btree interface (the latter later rewritten by Tom). Brendan O'Dea closely monitors the Perl API, as well as contributing Perl updates. Brendan also added the machinery for binding vile commands to Perl subroutines. Better still, he also found a way to bind operators and motions to same. Kuntal Daftary added several Perl modules. Clark Morgan and Greg McFarlane seem to run full regression tests on each new release, and always seem to find something to report. In addition, Clark regularly updates and corrects the documention left as an afterthought by the rest of us. Sean Ahern is also always dependable for finding a bug or two per release. The reference.doc file supplied with Bram Moolenaar's excellent Vim editor was useful in unraveling some of the less obvious parts of :map functionality. In addition, his implementation of digraph insertion was used directly in the creation of digraphs.rc. Thanks to Jukka Keto for contributing the c-filt.c code, which served as the precursor for vile's current syntax coloring implementation.

The initial changes to create vile from micro-Emacs were all done by Paul Fox (pgf@foxharp.boston.ma.us). (By the way, he is not the Paul D. Fox that wrote the Crisp editor.)

– Paul Fox

## Where to Get It

vile's homepage is
https://invisible-island.net/vile/

Up-to-date copies of vile, including executables for DOS, Win32 and OS/2 are found at

- ftp://ftp.invisible-island.net/vile/

which is mirrored at

- http://invisible-mirror.net/archives/vile/

There are also links on vile's homepage, for both ftp and http connections for the most often used executables and sources.

Development patches are found at

- ftp://ftp.invisible-island.net/vile/patches/
- http://invisible-mirror.net/archives/vile/patches/

In addition, we have distributed copies at other sites, including metalabs.unc.edu (Linux), hobbes.nmsu.edu (OS/2) and the VMS Freeware CDROM's.

## Problems

Submit bug reports via the project mailing list, or via the web-based bug reporting system. Both of these are available here:
https://savannah.nongnu.org/projects/vile

Subscribing to the mailing list is also the best way to keep informed of new releases.

## Online resources

This information is also available online:

- http://invisible-island.net/vile/vile-toc.html (table of contents)
- http://invisible-island.net/vile/vile-hlp.html (this file)

## Copyright

Copyright © 1995-2017,2018 by Paul Fox, Thomas Dickey, and Kevin Buettner