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Text File | 1998-08-30 | 154KB | 3,521 lines

*options.txt*   For Vim version 5.3.  Last modification: 1998 Aug 29


          VIM REFERENCE MANUAL    by Bram Moolenaar


Options                            *options*

1. Setting options            |set-option|
2. Automatically setting options    |auto-setting|
3. Saving settings            |save-settings|
4. Options summary            |option-summary|

For an overview of options see help.txt |option-list|.

Vim has a number of internal variables and switches which can be set to
achieve special effects.  These options come in three forms:
    boolean        can only be on or off        *boolean* *toggle*
    number        has a numeric value
    string        has a string value

==============================================================================
1. Setting options                    *set-option*

                            *:se* *:set*
:se[t]            Show all options that differ from their default value.

:se[t] all        Show all but terminal options.

:se[t] termcap        Show all terminal options.

:se[t] {option}?    Show value of {option}.

:se[t] {option}        Toggle option: set, switch it on.
            Number option: show value.
            String option: show value.

:se[t] no{option}    Toggle option: Reset, switch it off.

:se[t] {option}!   or
:se[t] inv{option}    Toggle option: Invert value.  {not in Vi}

:se[t] {option}&    Reset option to its default value.  {not in Vi}

:se[t] all&        Set all options, except terminal options, to their
            default value.  The values of 'term', 'lines' and
            'columns' are not changed  {not in Vi}

:se[t] {option}={value}        or
:se[t] {option}:{value}
            Set string or number option to {value}.  For numeric
            options the value can be given in decimal, hex
            (preceded with 0x) or octal (preceded with '0')
            (hex and octal are only available for machines which
            have the strtol() function).  The old value can be
            inserted by typing <Tab> (or whatever the value of
            'wildchar' is).  See |cmdline-completion|.
            See |option-backslash| for using backslashes in
            {value}.

:se[t] {option}+={value}                *:set+=*
            Add the {value} to a number option, or concatenate the
            {value} to a string option.  When the option is a
            comma separated list, a comma is added, unless the
            value was empty.

:se[t] {option}^={value}                *:set^=*
            Multiply the {value} to a number option, or
            prepend the {value} to a string option.  When the
            option is a comma separated list, a comma is added,
            unless the value was empty.

:se[t] {option}-={value}                *:set-=*
            Subtract the {value} from a number option, or remove
            the {value} from a string option, if it is there.
            If the {value} is not found in a string option, there
            is no error or warning.  When the option is a comma
            separated list, a comma is deleted, unless the option
            becomes empty.

The {option} arguments to ":set" may be repeated.  For example:
>  :set ai nosi sw=3 ts=3
If you make an error in one of the arguments, an error message will be given
and the following arguments will be ignored.

For {option} the form "t_xx" may be used to set a termcap option.  This will
override the value from the termcap.  You can then use it in a mapping.  If
the "xx" part contains special characters, use the <t_xx> form:
    :set <t_#4>=^[Ot

The listing from ":set" looks different from Vi.  Long string options are put
at the end of the list.  The number of options is quite large.  The output of
"set all" probably does not fit on the screen, causing Vim to give the
|more-prompt|.

                            *option-backslash*
To include white space in a string option value it has to be preceded with a
backslash.  To include a backslash you have to use two.  Effectively this
means that the number of backslashes in an option value is halved (rounded
down).
A few examples:
>  :set tags=tags\ /usr/tags        results in "tags /usr/tags"
>  :set tags=tags\\,file        results in "tags\,file"
>  :set tags=tags\\\ file        results in "tags\ file"

For MS-DOS and WIN32 backslashes in file names are mostly not removed.  More
precise: For options that expect a file name (those where environment
variables are expanded) a backslash before a normal file name character is not
removed.  But a backslash before a special character (space, backslash, comma,
etc.) is used like explained above.

                *add-option-flags* *remove-option-flags*
Some options are a list of flags.  When you want to add a flag to such an
option, without changing the existing ones, you can do it like this:
>  :set guioptions+=a
Remove a flag from an option like this:
>  :set guioptions-=a
This removes the 'a' flag from 'guioptions'.

               *:set_env* *expand-env* *expand-environment-var*
Environment variables in most string options will be expanded.  If the
environment variable exists the '$' and the following environment variable
name is replaced with its value.  If it does not exist the '$' and the name
are not modified.  Any non-id character (not a letter, digit or '_') may
follow the environment variable name.  That character and what follows is
appended to the value of the environment variable.  Examples:
>  :set term=$TERM.new
>  :set path=/usr/$INCLUDE,$HOME/include,.

                                *$HOME*
Using "~" is like using "$HOME", but it is only recognized at the start of an
option and after a space or comma.

On Unix systems "~user" can be used too.  It is replaced by the home directory
of user "user".  Example:
>   :set path=~mool/include,/usr/include,.

On Unix systems the form "${HOME}" can be used too.  The name between {} can
contain non-id characters then.  Note that if you want to use this for the
"gf" command, you need to add the '{' and '}' characters to 'isfname'.

                                *$VIM*
The environment variable "$VIM" is used to locate various support files, such
as the on-line documentation and files used for syntax highlighting.  For
example, the main help file is normally "$VIM/doc/help.txt".

To avoid the need for every user to set the $VIM environment variable, Vim
will try to get the value for $VIM in this order:
1. The value defined by the $VIM environment variable.  You can use this to
   make Vim look in a specific directory for its support files.  Example:
>    setenv VIM /home/paul/vim
2. For MSDOS and Win32 the environment variable $HOME is used, when defined.
   Works just like setting the $VIM environment variable.
3. The path from 'helpfile' is used, unless it contains some environment
   variable too (the default is "$VIM/doc/help.txt": chicken-egg problem).
   The file name ("help.txt" or any other) is removed.  If it then ends in
   "/doc", this is removed too.
4. For MSDOS, Win32 and OS/2 Vim tries to use the directory name of the
   executable.  If it ends in "/src", this is removed.  This is useful if you
   unpacked the .zip file in some directory, and adjusted the search path to
   find the vim executable.
5. For Unix the compile-time defined installation directory is used (see the
   output of ":version").

Note the maximum length of an expanded option is limited.  How much depends on
the system, mostly it is something like 256 or 1024 characters.

                            *:fix* *:fixdel*
:fix[del]        Set the value of 't_kD':
                't_kb' is     't_kD' becomes    ~
                  CTRL-?    CTRL-H
                not CTRL-?    CTRL-?

            (CTRL-? is 0177 octal, 0x7f hex) {not in Vi}

            If your delete key terminal code is wrong, but the
            code for backspace is allright, you can put this in
            your .vimrc:
>                :fixdel
            This works no matter what the actual code for
            backspace is.

            If the backspace key terminal code is wrong you can
            use this:
>                :if &term == "termname"
>                :  set t_kb=^V<BS>
>                :  fixdel
>                :endif
            Where "^V" is CTRL-V and "<BS>" is the backspace key
            (don't type four characters!).  Replace "termname"
            with your terminal name.

            If your <Delete> key sends a strange key sequence (not
            CTRL-? or CTRL-H) you cannot use ":fixdel".  Then use:
>                :if &term == "termname"
>                :  set t_kD=^V<Delete>
>                :endif
            Where "^V" is CTRL-V and "<Delete>" is the delete key
            (don't type eight characters!).  Replace "termname"
            with your terminal name.

            Note about Linux: By default the backspace key
            produces CTRL-?, which is wrong.  You can fix it by
            putting this line in your rc.local:
>                echo "keycode 14 = BackSpace" | loadkeys

==============================================================================
2. Automatically setting options            *auto-setting*

Besides changing options with the ":set" command, there are three alternatives
to set options automatically for one or more files:

1. When starting Vim initializations are read from various places.  See
   |initialization|.  Most of them are performed for all editing sessions,
   and some of them depend on the directory where Vim is started.
2. If you start editing a new file, the automatic commands are executed.
   This can be used to set options for files matching a particular pattern and
   many other things.  See |autocommand|.
3. If you start editing a new file, and the 'modeline' option is on, a
   number of lines at the beginning and end of the file are checked for
   modelines.  This is explained here.

                            *modeline*
There are two forms of modelines.  The first form:
    [text]{white}{vi:|vim:|ex:}[white]{options}

[text]        any text or empty
{white}        at least one white space (<Space> or <Tab>)
{vi:|vim:|ex:}    the string "vi:", "vim:" or "ex:"
[white]        optional white space
{options}    a list of option settings, separated with white space or ':',
        where each part between ':' is the argument for a ":set"
        command

Example:
>  vi:noai:sw=3 ts=6

The second form (this is compatible with some versions of Vi):

    [text]{white}{vi:|vim:|ex:}[white]set {options}:[text]

[text]        any text or empty
{white}        at least one white space (<Space> or <Tab>)
{vi:|vim:|ex:}    the string "vi:", "vim:" or "ex:"
[white]        optional white space
set        the string "set " (note the space)
{options}    a list of options, separated with white space, which is the
        argument for a ":set" command
:        a colon
[text]        any text or empty

Example:
>  /* vim: set ai tw=75: */

The white space before {vi:|vim:|ex:} is required.  This minimizes the chance
that a normal word like "lex:" is caught.  There is one exception: "vi:" and
"vim:" can also be at the start of the line (for compatibility with version
3.0).  Using "ex:" at the start of the line will be ignored (this could be
short for "example:").

The number of lines that are checked can be set with the 'modelines' option.
If 'modeline' is off or 'modelines' is 0 no lines are checked.

Note that for the first form all of the rest of the line is used, thus a line
like:
>  /* vi:ts=4: */
will give an error message for the trailing "*/".  This line is OK:
>  /* vi:set ts=4: */

If an error is detected the rest of the line is skipped.

If you want to include a ':' in a set command precede it with a '\'.  No other
commands than "set" are supported, for security reasons (somebody might create
a Trojan horse text file with modelines).

==============================================================================
3. Saving settings                    *save-settings*

                            *:mk* *:mkexrc*
:mk[exrc] [file]    Write current key mappings and changed options to
            [file] (default ".exrc" in the current directory),
            unless it already exists.  {not in Vi}

:mk[exrc]! [file]    Always write current key mappings and changed
            options to [file] (default ".exrc" in the current
            directory).  {not in Vi}

                            *:mkv* *:mkvimrc*
:mkv[imrc][!] [file]    Like as :mkexrc, but default is ".vimrc" in the
            current directory.  The ":version" command is also
            written to the file.  {not in Vi}

                            *:mks* *:mksession*
:mks[ession][!] [file]    Like :mkvimrc, but write commands to the end of the
            file that reload the files being edited at the time of
            the command.  {not in Vi}

These commands will write ":map" and ":set" commands to a file, in such a way
that when these commands are executed, the current key mappings and options
will be set to the same values.  The options 'columns', 'endofline', 'lines',
'modified', 'scroll', 'term' and 'ttyfast' are not included, because these are
terminal or file dependent.  Note that the options 'binary', 'fileformat',
'paste' and 'readonly' are included, this might not always be what you want.

When special keys are used in mappings, The 'cpoptions' option will be
temporarily made empty, to avoid the mappings to be misinterpreted.  This
makes the file incompatible with Vi, but makes sure it can be used with
different terminals.

A common method is to use a default ".vimrc" file, make some modifications
with ":map" and ":set" commands and write the modified file.  First read the
default ".vimrc" in with a command like ":source ~piet/.vimrc.Cprogs", change
the settings and then save them in the current directory with ":mkvimrc!".  If
you want to make this file your default .vimrc, move it to your home directory
(on Unix), s: (Amiga) or $VIM directory (MS-DOS).  You could also use
autocommands |autocommand| and/or modelines |modeline|.

If you only want to add a single option setting to your vimrc, you can use
these steps:
1. Edit your vimrc file with Vim.
2. Play with the option until it's right.  E.g., try out different values for
   'guifont'.
3. Append a line to set the value of the option, using the expression register
   '=' to enter the value.  E.g., for the 'guifont' option:
>  o:set guifont=<C-R>=&guifont<CR><Esc>
   [<C-R> is a CTRL-R, <CR> is a return, <Esc> is the escape key]

Note that when you create a .vimrc file, this can influence the 'compatible'
option, which has several side effects.  See |'compatible'|.
":mkvimrc", ":mkexrc" and ":mksession" write the command to set or reset the
'compatible' option to the output file first, because of these side effects.

The output of ":mksession" is the same as ":mkvimrc", but additional commands
are added to the file.  This depends on the 'sessionoptions' option.  The
resulting file, when executed with a ":source" command:
1. Restores mappings and options, if 'sessionoptions' contains "options".
2. Unloads all currently loaded buffers.
3. Restores the working directory.
4. Restores screen height, if 'sessionoptions' contains "resize".
5. Reloads the files you were editing, at the lines where you left them.
6. Restores windows, if 'sessionoptions' contains "winsize".
   If the Vim window size has been restored or is already the same as in the
   loaded session, the window sizes are restored exactly. Otherwise, the
   windows are just given sensible sizes
7. If a file exists with the same name as the session file, but ending in
   "x.vim" (for eXtra), executes that as well. You can use x.vim files to
   specify additional settings and actions associated with a given session,
   such as creating menu items in the GUI version.
You can thus use session files to quickly switch between different projects,
automatically loading the files you were last working on in that project.
The full filename of your current session is available in the internal
variable "this_session".  See |this_session-variable|.
So an example mapping might be (all one line):
>  :nmap <S-F1> :wa | execute("mksession " . this_session)<CR>:so $VIM/sessions/
which saves the files and session, and starts off the command to load another.

==============================================================================
4. Options summary                    *option-summary*

In the list below all the options are mentioned with their full name and with
an abbreviation if there is one.  Both forms may be used.

In this document when a boolean option is "set" that means that ":set option"
is entered.  When an option is "reset", ":set nooption" is used.

For some options there are two default values: The "Vim default", which is
used when 'compatible' is not set, and the "Vi default", which is used when
'compatible' is set.

Most options are the same in all windows and buffers.  There are a few that
are specific to how the text is presented in a window.  These can be set to a
different value in each window.  For example the 'list' option can be set in
one window and reset in another for the same text, giving both types of view
at the same time.  There are a few options that are specific to a certain
file.  These can have a different value for each file or buffer.  For example
the 'textwidth' option can be 78 for a normal text file and 0 for a C
program.

    global            one option for all buffers and windows
    local to window        each window has its own copy of this option
    local to buffer        each buffer has its own copy of this option

When creating a new window the option values from the currently active window
are used as a default value for the window-specific options.  For the
buffer-specific options this depends on the 's' and 'S' flags in the
'cpoptions' option.  If 's' in included (which is the default) the values for
buffer options are copied from the currently active buffer when a buffer is
first entered.  If 'S' is present the options are copied each time the buffer
is entered, this is almost like having global options.  If 's' and 'S' are not
present, the options are copied from the currently active buffer when the
buffer is created.

A jump table for the options with a short description can be found at |X_op|.

                    *'aleph'* *'al'*
'aleph' 'al'        number    (default 128 for MS-DOS, 224 otherwise)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    The ASCII code for the first letter of the Hebrew alphabet.  The
    routine that maps the keyboard in Hebrew mode, both in Insert mode
    (when hkmap is set) and on the command-line (when hitting CTRL-_)
    outputs the Hebrew characters in the range [aleph..aleph+26].
    aleph=128 applies to PC code, and aleph=224 applies to ISO 8859-8.
    See |rightleft.txt|.

            *'allowrevins'* *'ari'* *'noallowrevins'* *'noari'*
'allowrevins' 'ari'    boolean    (default off)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    Allow CTRL-_ in Insert and Command-line mode.  This is default off, to
    avoid that users that accidentally type CTRL-_ instead of SHIFT-_ get
    into reverse Insert mode, and don't know how to get out.  See
    'revins'.  This option is reset when 'compatible' is set.

             *'altkeymap'* *'akm'* *'noalkeymap'* *'noakm'*
'altkeymap' 'akm'    boolean (default off)
            global
            {not in Vi}
            {only available when compiled with the |+farsi|
            feature}
    When on, the second language is Farsi. In editing mode CTRL-_ toggles
    the keyboard map between Farsi and English, when 'allowrevins' set.

    When off, the keyboard map toggles between Hebrew and English. This
    is useful to start the vim in native mode i.e. English (left-to-right
    mode) and have default second language Farsi or Hebrew (right-to-left
    mode).  See |farsi.txt|.

                   *'autoindent'* *'ai'* *'noautoindent'* *'noai'*
'autoindent' 'ai'    boolean    (default off)
            local to buffer
    Copy indent from current line when starting a new line (typing <CR>
    in Insert mode or when using the "o" or "O" command).  If you do not
    type anything on the new line except <BS> and then type <Esc> or
    <CR>, the indent is deleted again.  When autoindent is on,
    formatting (with the "gq" command or when you reach 'textwidth' in
    Insert mode) uses the indentation of the first line.   When
    'smartindent' or 'cindent' is on the indent is changed in specific
    cases.  The 'autoindent' option is reset when the 'paste' option is
    set.  {small difference from Vi: After the indent is deleted when
    typing <Esc> or <CR>, the cursor position when moving up or down is
    after the deleted indent; Vi puts the cursor somewhere in the deleted
    indent}.

                 *'autowrite'* *'aw'* *'noautowrite'* *'noaw'*
'autowrite' 'aw'    boolean    (default off)
            global
    Write the contents of the file, if it has been modified, on each
    :next, :rewind, :previous, :stop, :suspend, :tag, :!, :make, CTRL-]
    and CTRL-^ command; and when a CTRL-O, CTRL-I, '<A-Z0-9>, or `<A-Z0-9>
    command takes one to another file.

                            *'background'* *'bg'*
'background' 'bg'    string    (default "dark" or "light")
            global
            {not in Vi}
    When set to "dark", Vim will try to use colors that look good on a
    dark background.  When set to "light", Vim will try to use colors that
    look good on a light background.  Any other value is illegal.
    Vim tries to set the default value according to the terminal used.
    This will not always be correct.
    When starting the GUI, the default value for 'background' will be
    "light".  When the value is not set in the .gvimrc, and Vim detects
    that the background is actually quite dark, 'background' is set to
    "dark".  But this happens only AFTER the .gvimrc file has been read
    (because the window needs to be opened to find the actual background
    color).  To get around this, force the GUI window to be opened by
    putting a ":gui" command in the .gvimrc file, before where the value
    of 'background' is used (e.g., before ":syntax on").
    For the Win32 GUI, setting 'background' before starting the GUI, will
    change the background and foreground colors to lightgrey on black or
    black on white.  On other systems setting 'background' does not
    change the foreground or background colors.
    Normally this option would be set in the .vimrc file.  Possibly
    depending on the terminal name.  Example:
>        if &term == "pcterm"
>          set background=dark
>        endif
    When this option is set, the default settings for the highlight groups
    will change.  To use other settings, place ":highlight" commands AFTER
    the setting of the 'background' option.
    This option is also used in the "$VIM/syntax/syntax.vim" file to
    select the colors for syntax highlighting.  After changing this
    option, you must load syntax.vim again to see the result.  This can be
    done with ":syntax on".

                            *'backspace'* *'bs'*
'backspace' 'bs'    number    (default 0)
            global
            {not in Vi}
    Influences the working of <BS>, <Del>, CTRL-W and CTRL-U in Insert
    mode:
    value    effect  ~
      0    Vi compatible backspacing is used.
      1    allow backspacing over <EOL>s.
      2    allow backspacing over the start of insert.  CTRL-W and CTRL-U
        stop once at the start of insert.
    See |:fixdel| if your <BS> or <Del> key does not do what you want.

                       *'backup'* *'bk'* *'nobackup'* *'nobk'*
'backup' 'bk'        boolean    (default off)
            global
            {not in Vi}
    Make a backup before overwriting a file.  Leave it around after the
    file has been successfully written.  If you do not want to keep the
    backup file, but you do want a backup while the file is being
    written, reset this option and set the 'writebackup' option (this is
    the default).  If you do not want a backup file at all reset both
    options (use this if your file system is almost full).  See the
    |backup-table| for more explanations.

                        *'backupdir'* *'bdir'*
'backupdir' 'bdir'    string    (default for Amiga: ".,t:",
                 for MS-DOS and Win32: ".,c:/tmp,c:/temp"
                 for Unix: ".,~/tmp,~/")
            global
            {not in Vi}
    List of directories for the backup file, separated with commas.
    - The backup file will be created in the first directory in the list
      where this is possible.
    - Empty means that no backup file will be created ('patchmode' is
      impossible!).
    - A directory "." means to put the backup file in the same directory
      as the edited file.
    - A directory starting with "./" (or ".\" for MS-DOS et.al.) means to
      put the backup file relative to where the edited file is.  The
      leading "." is replaced with the path name of the edited file.
    - Spaces after the comma are ignored, other spaces are considered part
      of the directory name.  To have a space at the start of a directory
      name, precede it with a backslash.
    - To include a comma in a directory name precede it with a backslash.
    - A directory name may end in an '/'.
    - Environment variables are expanded |:set_env|.
    - Careful with '\' characters, type one before a space, type two to
      get one in the option (see |option-backslash|), for example:
>        :set bdir=c:\\tmp,\ dir\\,with\\,commas,\\\ dir\ with\ spaces
    - For backwards compatibility with Vim version 3.0 a '>' at the start
      of the option is removed.
    See also 'backup' and 'writebackup' options.
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    directories from the list.  This avoids problems when a future version
    uses another default.

                        *'backupext'* *'bex'*
'backupext' 'bex'    string    (default "~", for VMS: "_")
            global
            {not in Vi}
    String which is appended to a file name to make the name of the
    backup file.  The default is quite unusual, because this avoids
    accidentally overwriting existing files with a backup file.  You might
    prefer using ".bak", but make sure that you don't have files with
    ".bak" that you want to keep.

                     *'binary'* *'bin'* *'nobinary'* *'nobin'*
'binary' 'bin'        boolean    (default off)
            local to buffer
            {not in Vi}
    This option should be set before editing a binary file.  You can also
    use the "-b" Vim argument.  When this option is switched on a few
    options will be changed (also when it already was on):
        'textwidth'  will be set to 0
        'wrapmargin' will be set to 0
        'modeline'   will be off
        'expandtab'  will be off
    Also, 'fileformat' and 'fileformats' options will not be used, the
    file is read and written like 'fileformat' was "unix" (a single <NL>
    separates lines).
    NOTE: When you start editing a(nother) file while the 'bin' option is
    on, settings from autocommands may change the settings again (e.g.,
    'textwidth'), causing trouble when editing.  You might want to set
    'bin' again when the file has been loaded.
    The previous values of these options are remembered and restored when
    'bin' is switched from on to off.  Each buffer has its own set of
    saved option values.
    When writing a file the <EOL> for the last line is only written if
    there was one in the original file (normally Vim appends an <EOL> to
    the last line if there is none; this would make the file longer).  See
    the 'endofline' option.

                   *'bioskey'* *'biosk'* *'nobioskey'* *'nobiosk'*
'bioskey' 'biosk'    boolean    (default on)
            global
            {not in Vi}  {only for MS-DOS}
    When on the bios is called to obtain a keyboard character.  This works
    better to detect CTRL-C, but only works for the console.  When using a
    terminal over a serial port reset this option.

                        *'breakat'* *'brk'*
'breakat' 'brk'        string    (default " ^I!@*-+_;:,./?")
            global
            {not in Vi}
    This option lets you choose which characters might cause a line
    break if 'linebreak' is on.

                        *'browsedir'* *'bsdir'*
'browsedir' 'bsdir'    string    (default for "last")
            global
            {not in Vi} {only for Motif and Win32 GUI}
    Which directory to use for the file browser:
       last        Use same directory as with last file browser.
       buffer    Use the directory of the related buffer.
       current    Use the current directory.

                   *'cindent'* *'cin'* *'nocindent'* *'nocin'*
'cindent' 'cin'        boolean    (default off)
            local to buffer
            {not in Vi}
            {not available when compiled without the |+cindent|
            feature}
    Enables automatic C program indenting  See 'cinkeys' to set the keys
    that trigger reindenting in insert mode and 'cinoptions' to set your
    preferred indent style.  If 'lisp' is not on and 'equalprg' is empty,
    the "=" operator indents using this algorithm rather than calling an
    external program.  See |C-indenting|.  This option is switched off
    when 'paste' is set.  When you don't like the way 'cindent' works, try
    the 'smartindent' option.

'cinkeys' 'cink'    string    (default "0{,0},:,0#,!^F,o,O,e")
            local to buffer
            {not in Vi}
            {not available when compiled without the |+cindent|
            feature}
    A list of keys that, when typed in insert mode, cause reindenting of
    the current line.  Only happens if 'cindent' is on.  See
    |C-indenting|.

                        *'cinoptions'* *'cino'*
'cinoptions' 'cino'    string    (default "")
            local to buffer
            {not in Vi}
            {not available when compiled without the |+cindent|
            feature}
    The 'cinoptions' affect the way 'cindent' reindents lines in a C
    program.  See |cinoptions-values| for the values of this option, and
    |C-indenting| for info on C indenting in general.


                        *'cinwords'* *'cinw'*
'cinwords' 'cinw'    string    (default "if,else,while,do,for,switch")
            local to buffer
            {not in Vi}
            {not available when compiled without both the
            |+cindent| and the |+smartindent| features}
    These keywords start an extra indent in the next line when
    'smartindent' or 'cindent' is set.  For 'cindent' this is only done at
    an appropriate place (inside {}).

                        *'cmdheight'* *'ch'*
'cmdheight' 'ch'    number    (default 1)
            global
            {not in Vi}
    Number of lines to use for the command-line.  Helps avoiding
    |hit-return| prompts.

                        *'columns'* *'co'*
'columns' 'co'        number    (default 80 or terminal width)
            global
            {not in Vi}
    Number of columns of the screen.  Normally this is set by the terminal
    initialization and does not have to be set by hand.

                        *'comments'* *'com'*
'comments' 'com'    string    (default
                "sr:/*,mb:*,el:*/,://,b:#,:%,:XCOMM,n:>,fb:-")
            local to buffer
            {not in Vi}
    A comma separated list of strings that can start a comment line.  See
    |format-comments|.  See |option-backslash| about using backslashes to
    insert a space.

                   *'compatible'* *'cp'* *'nocompatible'* *'nocp'*
'compatible' 'cp'    boolean    (default on, off when a .vimrc file is found)
            global
            {not in Vi}
    This option has the function of making Vim either more Vi-compatible,
    or behave in a more useful way.  This is a special kind of option,
    because when it's set or reset, other options are also changed as a
    side effect.  CAREFUL: Setting or resetting this option can have a lot
    of unexpected effects: Mappings are interpreted in another way, undo
    behaves differently, etc.
    By default this option is on and the Vi defaults are used for the
    options.  This default was chosen for those people who want to use Vim
    just like Vi, and don't even (want to) know about the 'compatible'
    option.
    When a ".vimrc" file is found while Vim is starting up, this option is
    switched off, and all options that have not been modified will be set
    to the Vim defaults.  Effectively, this means that when a ".vimrc"
    file exists, Vim will use the Vim defaults, otherwise it will use the
    Vi defaults.  Also see |compatible-default|.
    You can also set this option with the "-C" argument, and reset it with
    "-N".  See |-C| and |-N|.
    Switching this option off makes the Vim defaults be used for options
    that have a different Vi and Vim default value.  See the options
    marked with a '+' below.  Other options are not modified.
    At the moment this option is set, several other options will be set
    or reset to make Vim as Vi-compatible as possible.  See the table
    below.  This can be used if you want to revert to Vi compatible
    editing.
    See also 'cpoptions'.

    option        + set value    effect    ~

    'allowrevins'      off        no CTRL-_ command
    'backspace'      0        normal backspace
    'backup'      off        no backup file
    'cindent'      off        no C code indentation
    'cpoptions'    + (all flags)    Vi-compatible flags
    'digraph'      off        no digraphs
    'esckeys'    + off        no <Esc>-keys in Insert mode
    'expandtab'      off        tabs not expanded to spaces
    'fileformats'    + ""        no automatic file format detection,
              "dos,unix"    except for DOS, Windows and OS/2
    'formatoptions'    + "vt"        Vi compatible formatting
    'gdefault'      off        no default 'g' flag for ":s"
    'history'    + 0        no commandline history
    'hlsearch'      off        no highlighting of search matches
    'incsearch'      off        no incremental searching
    'insertmode'      off        do not start in Insert mode
    'iskeyword'    + "@,48-57,_"    keywords contain alphanumeric
                        characters and '_'
    'joinspaces'      on        insert 2 spaces after period
    'modeline'    + off        no modelines
    'more'        + off        no pauses in listings
    'revins'      off        no reverse insert
    'ruler'          off        no ruler
    'scrolljump'      1        no jump scroll
    'scrolloff'      0        no scroll offset
    'shiftround'      off        indent not rounded to shiftwidth
    'showcmd'    + off        command characters not shown
    'showmode'    + off        current mode not shown
    'smartcase'      off        no automatic ignore case switch
    'smartindent'      off        no smart indentation
    'smarttab'      off        no smart tab size
    'softtabstop'      0        tabs are always 'tabstop' positions
    'startofline'      on        goto startofline with some commands
    'tagrelative'    + off        tag file names are not relative
    'textauto'    + off        no automatic textmode detection
    'textwidth'      0        no automatic line wrap
    'tildeop'      off        tilde is not an operator
    'ttimeout'      off        no terminal timeout
    'whichwrap'    + ""        left-right movements don't wrap
    'wildchar'    + CTRL-E    only when the current value is <Tab>
                    use CTRL-E for cmdline completion

                        *'complete'* *'cpt'*
'complete' 'cpt'    string    (default: ".,b")
            global
            {not in Vi}
    This option specifies how keyword completion |ins-completion| works
    when CTRL-P or CTRL-N are used.  It indicates the type of completion
    and the places to scan.  It is a comma separated list of flags:
    .    scan the current buffer.
    w    scan other windows.
    b    scan other loaded buffers.
    u    scan the unloaded buffers.
    k    scan the files given with the 'dictionary' option.
    k[dict]    scan the file [dict].  Several "k" flags can be given,
        patterns are valid too.  For example:
>            :set cpt=k/usr/dict/*,k~/spanish
    i    scan current and included files.
    ]    tag completion.
    t    same as "]".

    Unloaded buffers are not loaded, thus their autocmds |:autocmd| are
    not executed, this may lead to unexpected completions from some files
    (gziped files for example)

    A nice value is:
>        :set cpt=.,b,u

    As U can see, CTRL-N and CTRL-P can be used to do any 'iskeyword'-
    based expansion (eg dictionary |i_CTRL-X_CTRL-K|, include
    |i_CTRL-X_CTRL-I|, tag |i_CTRL-X_CTRL-]| and normal expansions)

                *'confirm'* *'cf'* *'noconfirm'* *'nocf'*
'confirm' 'cf'        boolean (default off)
            global
            {not in Vi}
    When 'confirm' is on, certain operations that would normally
    fail because of unsaved changes to a buffer, e.g. ":q" and ":e",
    instead raise a |dialog| asking if you wish to save the current
    file(s).  You can still use a ! to unconditionally abandon a buffer.
    If 'confirm' is off you can still activate confirmation for one
    command only (this is most useful in mappings) with the |:confirm|
    command.
    Also see the |confirm()| function and the 'v' flag in 'guioptions'.

                        *'cpoptions'* *'cpo'*
'cpoptions' 'cpo'    string    (Vim default: "aABceFs",
                 Vi default:  all flags)
            global
            {not in Vi}
    A sequence of single character flags.  When a character is present
    this indicates vi-compatible behaviour.  This is used for things where
    not being vi-compatible is mostly or sometimes preferred.
    'cpoptions' stands for 'compatibleoptions'.
    Commas can be added for readability.
    To avoid problems with flags that are added in the future, use the
    "+=" and "-=" feature of ":set" |add-option-flags|.

        contains    behaviour    ~
        a    When included, a ":read" command with a file name
            argument will set the alternate file name for the
            current window.
        A    When included, a ":write" command with a file name
            argument will set the alternate file name for the
            current window.
        b    "\|" in a ":map" command is recognized as the end of
            the map command.  The '\' is included in the mapping,
            the text after the '|' is interpreted as the next
            command.  Use a CTRL-V instead of a backslash to
            include the '|' in the mapping.  Applies to all
            mapping, abbreviation, menu and autocmd commands.
            See also |map_bar|.
        B    A backslash has no special meaning in mappings,
            abbreviations and the "to" part of the menu commands.
            Remove this flag to be able to use a backslash like a
            CTRL-V.  For example, the command ":map X \<Esc>"
            results in X being mapped to:
                'B' included:    "\^["    (^[ is a real <Esc>)
                'B' excluded:   "<Esc>"  (5 characters)
                ('<' excluded in both cases)
        <    Disable the recognition of special key codes in |<>|
            form in mappings, abbreviations, and the "to" part of
            menu commands.  For example, the command
            ":map X <Tab>" results in X being mapped to:
                '<' included:   "<Tab>"  (5 characters)
                '<' excluded:   "^I"     (^I is a real <Tab>)
            Also see the 'k' flag below.
        c    Searching continues at the end of any match at the
            cursor position.  When not present searching continues
            one character from the cursor position.  With 'c'
            "abababababab" only gets three matches when repeating
            "/abab", without 'c' there are five matches.
        d    Using "./" in the 'tags' option doesn't mean to use
            the tags file relative to the current file, but the
            tags file in the current directory.
        e    When executing a register with ":@r", always add a
            <CR> to the last line, also when the register is not
            linewise.  If this flag is not present, the register
            is not linewise and the last line does not end in a
            <CR>, then the last line is put on the command-line
            and can be edited before hitting <CR>.
        E    It is an error when using "y", "d", "c", "g~", "gu" or
            "gU" on an Empty region.  The operators only work when
            at least one character is to be operate on.  Example:
            This makes "y0" fail in the first column.
        f    When included, a ":read" command with a file name
            argument will set the file name for the current buffer,
            if the current buffer doesn't have a file name yet.
        F    When included, a ":write" command with a file name
            argument will set the file name for the current
            buffer, if the current buffer doesn't have a file name
            yet.
        j    When joining lines, only add two spaces after a '.',
            not after '!' or '?'.  Also see 'joinspaces'.
        k    Disable the recognition of raw key codes in
            mappings, abbreviations, and the "to" part of menu
            commands.  For example, if <Key> sends ^[OA (where ^[
            is <Esc>), the command ":map X ^[OA" results in X
            being mapped to:
                'k' included:   "^[OA"   (3 characters)
                'k' excluded:   "<Key>"  (one key code)
            Also see the '<' flag above.
        l    Backslash in a [] range in a search pattern is taken
            literally, only "\]" is special  See |/[]|
               'l' included: "/[ \t]"  finds <Space>, '\' and 't'
               'l' excluded: "/[ \t]"  finds <Space> and <Tab>
        L    When the 'list' option is set, 'wrapmargin' and
            'textwidth' count a <Tab> as two characters, instead
            of the normal behaviour of a <Tab>.
        m    When included, a showmatch will always wait half a
            second.  When not included, a showmatch will wait half
            a second or until a character is typed.  |'showmatch'|
        o    Line offset to search command is not remembered for
            next search.
        r    Redo ("." command) uses "/" to repeat a search
            command, instead of the actually used search string.
        s    Set buffer options when entering the buffer for the
            first time.  This is like it is in Vim version 3.0.
            And it is the default.  If not present the options are
            set when the buffer is created.
        S    Set buffer options always when entering a buffer
            (except 'readonly' and 'fileformat').  This is the
            (most) Vi compatible setting.
            The options are set to the values in the current
            buffer.  When you change an option and go to another
            buffer, the value is copied.  Effectively makes the
            buffer options global to all buffers.

            's'    'S'     copy buffer options
            no     no      when buffer created
            yes    no      when buffer first entered (default)
             X     yes     each time when buffer entered (vi comp.)

        t    Search pattern for the tag command is remembered for
            "n" command.  Otherwise Vim only puts the pattern in
            the history for search pattern, but doesn't change the
            last used search pattern.
        u    Undo is Vi compatible.  See |undo-two-ways|.
        w    When using "cw" on a blank character, only change one
            character and not all blanks until the start of the
            next word.
        W    Don't overwrite a readonly file.  When omitted, ":w!"
            overwrites a readonly file, if possible.
        x    <Esc> on the command-line executes the command-line.
            The default in Vim is to abandon the command-line,
            because <Esc> normally aborts a command.  |c_<Esc>|
        y    A yank command can be redone with ".".
        $    When making a change to one line, don't redisplay the
            line, but put a '$' at the end of the changed text.
            The changed text will be overwritten when you type the
            new text.  The line is redisplayed if you type any
            command that moves the cursor from the insertion
            point.
        !    When redoing a filter command, use the last used
            external command, whatever it was.  Otherwise the last
            used -filter- command is used.
        *    Use ":*" in the same way as ":@".  When not included,
            ":*" is an alias for ":'<,'>", select the Visual area.
        %    Vi-compatible matching is done for the "%" command.
            Does not recognize "#if", "#endif", etc.
            Does not recognize "/*" and "*/".
            Parens inside single and double quotes are also
            counted, causing a string that contains a paren to
            disturb the matching.  For example, in a line like
            "if (strcmp("foo(", s))" the first paren does not
            match the last one.  When this flag is not included,
            parens inside single and double quotes are treated
            specially.  When matching a paren outside of quotes,
            everything inside quotes is ignored.  When matching a
            paren inside quotes, it will find the matching one (if
            there is one).  This works very well for C programs.

                        *'cscopeprg'* *'csprg'*
'cscopeprg' 'csprg'    string    (default "cscope")
            global
            {not available when compiled without the |+cscope|
            feature}
            {not in Vi}
    Specifies the command to execute cscope.  See |cscopeprg|.

                        *'cscopetag'* *'cst'*
'cscopetag' 'cst'    boolean (default off)
            global
            {not available when compiled without the |+cscope|
            feature}
            {not in Vi}
    Use cscope for tag commands.  See |cscope-options|.

                        *'cscopetagorder'* *'csto'*
'cscopetagorder' 'csto'    number    (default 0)
            global
            {not available when compiled without the |+cscope|
            feature}
            {not in Vi}
    Determines the order in which ":cstag" performs a search.  See
    |cscopetagorder|.

                        *'cscopeverbose'* *'csverb'*
'cscopeverbose' 'csverb' boolean (default off)
            global
            {not available when compiled without the |+cscope|
            feature}
            {not in Vi}
    Give messages when adding a cscope database.  See |cscopeverbose|.

                        *'define'* *'def'*
'define' 'def'        string    (default "^#\s*define")
            global
            {not in Vi}
    Pattern to be used to find a macro definition.  It is a search
    pattern, just like for the "/" command.  This option is used for the
    commands like "[i" and "[d" |include-search|.  The 'isident' option is
    used to recognize the identifier name after the match.  See
    |option-backslash| about inserting backslashes to include a space or
    backslash.
    The default value is for C programs.  For C++ this value would be
    useful, to include const type declarations:
>        ^\(#\s*define\|[a-z]*\s*const\s*[a-z]*\)
    When using the ":set" command, you need to double the backslashes!

                        *'dictionary'* *'dict'*
'dictionary' 'dict'    string    (default "")
            global
            {not in Vi}
    List of file names, separated by commas, that are used to lookup words
    for keyword completion commands |i_CTRL-X_CTRL-K|.  Each file should
    contain a list of words.  This can be one word per line, or several
    words per line, separated by non-keyword characters (white space is
    preferred).
    To include a comma in a file name precede it with a backslash.  Spaces
    after a comma are ignored, otherwise spaces are included in the file
    name.  See |option-backslash| about using backslashes.
    Where to find a list of words?
    - On FreeBSD, there is the file "/usr/share/dict/words".
    - In the Simtel archive, look in the "msdos/linguist" directory.
    - In "miscfiles" of the GNU collection.
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    directories from the list.  This avoids problems when a future version
    uses another default.

                     *'digraph'* *'dg'* *'nodigraph'* *'nodg'*
'digraph' 'dg'        boolean    (default off)
            global
            {not in Vi}
            {not available when compiled without the |+digraphs|
            feature}
    Enable the entering of digraphs in Insert mode with {char1} <BS>
    {char2}.  See |digraphs|.

                        *'directory'* *'dir'*
'directory' 'dir'    string    (default for Amiga: ".,t:",
                 for MS-DOS and Win32: ".,c:\tmp,c:\temp"
                 for Unix: ".,~/tmp,/var/tmp,/tmp")
            global
    List of directory names for the swap file, separated with commas.
    - The swap file will be created in the first directory where this is
      possible.
    - Empty means that no swap file will be used (recovery is
      impossible!).
    - A directory "." means to put the swap file in the same directory as
      the edited file.  On Unix, a dot is prepended to the file name, so
      it doesn't show in a directory listing.
    - A directory starting with "./" (or ".\" for MS-DOS et.al.) means to
      put the swap file relative to where the edited file is.  The leading
      "." is replaced with the path name of the edited file.
    - Spaces after the comma are ignored, other spaces are considered part
      of the directory name.  To have a space at the start of a directory
      name, precede it with a backslash.
    - To include a comma in a directory name precede it with a backslash.
    - A directory name may end in an ':' or '/'.
    - Environment variables are expanded |:set_env|.
    - Careful with '\' characters, type one before a space, type two to
      get one in the option (see |option-backslash|), for example:
>        :set dir=c:\\tmp,\ dir\\,with\\,commas,\\\ dir\ with\ spaces
    - For backwards compatibility with Vim version 3.0 a '>' at the start
      of the option is removed.
    Using "." first in the list is recommended.  This means that editing
    the same file twice will result in a warning.  Using "/tmp" on Unix is
    discouraged: When the system crashes you lose the swap file.
    "/var/tmp" is often not cleared when rebooting, thus is a better
    choice than "/tmp".  But it can contain a lot of files, your swap
    files get lost in the crowd.  That is why a "tmp" directory in your
    home directory is tried first.
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    directories from the list.  This avoids problems when a future version
    uses another default.
    {Vi: directory to put temp file in, defaults to "/tmp"}

               *'ed'* *'edcompatible'* *'noed'* *'noedcompatible'*
'edcompatible' 'ed'    boolean    (default off)
            global
    Makes the 'g' and 'c' flags of the ":substitute" command to be
    toggled each time the flag is given.  See |complex-change|.  See
    also 'gdefault' option.

                   *'endofline'* *'eol'* *'noendofline'* *'noeol'*
'endofline' 'eol'    boolean    (default on)
            local to buffer
            {not in Vi}
    When writing a file and this option is off and the 'binary' option
    is on, no <EOL> will be written for the last line in the file.  This
    option is automatically set when starting to edit a new file, unless
    the file does not have an <EOL> for the last line in the file, in
    which case it is reset.  Normally you don't have to set or reset this
    option.  When 'binary' is off the value is not used when writing the
    file.  When 'binary' is on it is used to remember the presence of a
    <EOL> for the last line in the file, so that when you write the file
    the situation from the original file can be kept.  But you can change
    it if you want to.

                 *'equalalways'* *'ea'* *'noequalalways'* *'noea'*
'equalalways' 'ea'    boolean    (default on)
            global
            {not in Vi}
    When on all the windows are automatically made the same size after
    splitting or closing a window.  When off, splitting a window will
    reduce the size of the current window and leave the other windows the
    same.  When closing a window the extra lines are given the the window
    above it.

                        *'equalprg'* *'ep'*
'equalprg' 'ep'        string    (default "")
            global
            {not in Vi}
    External program to use for "=" command.  When this option is empty
    the internal formatting functions are used ('lisp' or 'cindent').
    Environment variables are expanded |:set_env|.  See |option-backslash|
    about including spaces and backslashes.

                   *'errorbells'* *'eb'* *'noerrorbells'* *'noeb'*
'errorbells' 'eb'    boolean    (default off)
            global
    Ring the bell (beep or screen flash) for error messages.  This only
    makes a difference for error messages, the bell will be used always
    for a lot of errors without a message (e.g., hitting <Esc> in Normal
    mode).  See 'visualbell' on how to make the bell behave like a beep,
    screen flash or do nothing.

                        *'errorfile'* *'ef'*
'errorfile' 'ef'    string    (Amiga default: "AztecC.Err",
                    others: "errors.err")
            global
            {not in Vi}
            {not available when compiled without the |+quickfix|
            feature}
    Name of the errorfile for the QuickFix mode (see |:cf|).
    When the "-q" command-line argument is used, 'errorfile' is set to the
    following argument.  See |-q|.
    NOT used for the ":make" command.  See 'makeef' for that.
    Environment variables are expanded |:set_env|.
    See |option-backslash| about including spaces and backslashes.

                        *'errorformat'* *'efm'*
'errorformat' 'efm'    string    (default is very long)
            global
            {not in Vi}
            {not available when compiled without the |+quickfix|
            feature}
    Scanf-like description of the format for the lines in the error file
    (see |errorformat|).

                     *'esckeys'* *'ek'* *'noesckeys'* *'noek'*
'esckeys' 'ek'        boolean    (Vim default: on, Vi default: off)
            global
            {not in Vi}
    Function keys that start with an <Esc> are recognized in Insert
    mode.  When this option is off, the cursor and function keys cannot be
    used in Insert mode if they start with an <Esc>.  The advantage of
    this is that the single <Esc> is recognized immediately, instead of
    after one second.  Instead of resetting this option, you might want to
    try changing the values for 'timeoutlen' and 'ttimeoutlen'.  Note that
    when 'esckeys' is off, you can still map anything, but the cursor keys
    won't work by default.

                        *'eventignore'* *'ei'*
'eventignore' 'ei'    string    (default "")
            global
            {not in Vi}
    A list of autocommand event names, which are to be ignored.
    When set to "all", all autocommand events are ignored, autocommands
    will not be executed.
    Otherwise this is a comma separated list of event names.  Example:
>        :set ei=WinEnter,WinLeave

                 *'expandtab'* *'et'* *'noexpandtab'* *'noet'*
'expandtab' 'et'    boolean    (default off)
            local to buffer
            {not in Vi}
    In Insert mode: Use the appropriate number of spaces to insert a
    <Tab>.  Spaces are used in indents with the '>' and '<' commands and
    when 'autoindent' is on.  To insert a real tab when 'expandtab' is
    on, use CTRL-V<Tab>.  See also |:retab| and |ins-expandtab|.

                    *'exrc'* *'ex'* *'noexrc'* *'noex'*
'exrc' 'ex'        boolean (default off)
            global
            {not in Vi}
    Enables the reading of .vimrc, .exrc and .gvimrc in the current
    directory.  If you switch this option on you should also consider
    setting the 'secure' option (see |initialization|).  Using a local
    .exrc, .vimrc or .gvimrc is a potential security leak, use with care!
    also see |.vimrc| and |gui-init|.

'fileencoding' 'fe'    string (default: "ansi")
            local to buffer
            {not in Vi}

    Enables editing of alternative encoded files, for example shift-JIS or
    Unicode.  When you set this option, it fires of a 'FileEncoding'
    autocommand so you can set up fonts if necessary.

    Possible values are:
        ansi    default setting, good for most Western languages
        unicode    <to be implemented>
        japan    set to use shift-JIS (Windows CP 932) encoding
        korea    set to use Korean DBCS
        prc        use simplified Chinese encoding
        taiwan    use traditional Chinese encoding
        hebrew    <to be implemented>
        farsi    <to be implemented>

    This lets you view, for example, a Japanese S-JIS encoded file
    (provided you have a suitable font).  The DBCS characters are treated
    as a unit, i.e. you cursor past them or delete them, etc as a unit,
    rather than deleting half a character.

                    *'fileformat'* *'ff'*
'fileformat' 'ff'    string (DOS, Win32, OS/2 default: "dos",
                Unix default: "unix",
                Macintosh default: "mac")
            local to buffer
            {not in Vi}
    This gives the <EOL> of the current buffer, which is used for
    reading/writing the buffer from/to a file:
        dos        <CR> <NL>
        unix    <NL>
        mac        <CR>
    When "dos" is used, CTRL-Z at the end of a file is ignored.
    See |file-formats| and |file-read|.
    When 'binary' is set, the value of 'fileformat' is ignored, file I/O
    works like it was set to "unix'.
    This option is set automatically when starting to edit a file and
    'fileformats' is not empty and 'binary' is off.
    When this option is set, after starting to edit a file, the 'modified'
    option is set, because the file would be different when written.
    For backwards compatibility: When this option is set to "dos",
    'textmode' is set, otherwise 'textmode' is reset.

                    *'fileformats'* *'ffs'*
'fileformats' 'ffs'    string (Vim+Vi    DOS, Win32, OS/2 default: "dos,unix",
                Vim    Unix default: "unix,dos",
                Vim    Mac default: "mac,unix,dos",
                Vi    others default: "")
            global
            {not in Vi}
    This gives the end-of-line (<EOL>) formats that will be tried.  It is
    used when starting to edit a new buffer and when reading a file into
    an existing buffer:
    - When empty, the format defined with 'fileformat' will be used
      always.  It is not set automatically.
    - When set to one name, that format will be used whenever a new buffer
      is opened.  'fileformat' is set accordingly for that buffer.  The
      'fileformats' name will be used when a file is read into an existing
      buffer, no matter what 'fileformat' for that buffer is set to.
    - When more than one name is present, separated by commas, automatic
      <EOL> detection will be done when reading a file.  When starting to
      edit a file, a check is done for the <EOL>:
      1. If all lines end in <CR><NL>, and 'fileformats' includes "dos",
         'fileformat' is set to "dos".
      2. If a <NL> is found and 'fileformats' includes "unix, 'fileformat'
         is set to "unix".  Note that when a <NL> is found without a
         preceding <CR>, "unix" is prefered over "dos".
      3. If 'fileformats' includes "mac", 'fileformat' is set to "mac".
         This means that "mac" is only choosen when "unix" is not present,
         or when no <NL> is found in the file, and when "dos" is not
         present, or no <CR><NL> is present in the file.
      4. If 'fileformat' is still not set, the first name from
         'fileformats' is used.
      When reading a file into an existing buffer, the same is done, but
      this happens like 'fileformat' has been set appropriately for that
      file only, the option is not changed.
    When 'binary' is set, the value of 'fileformats' is not used.

    For systems with a Dos-like <EOL> (<CR><NL>), when reading files that
    are ":source"ed and for vimrc files, automatic <EOL> detection may be
    done:
    - When 'fileformats' is empty, there is no automatic detection.  Dos
      format will be used.
    - When 'fileformats' is set to one or more names, automatic detection
      is done.  This is based on the first <NL> in the file: If there is a
      <CR> in front of it, Dos format is used, otherwise Unix format is
      used.
    Also see |file-formats|.
    For backwards compatibility: When this option is set to an empty
    string or one format (no comma is included), 'textauto' is reset,
    otherwise 'textauto' is set.

                    *'filetype'* *'ft'*
'filetype' 'ft'        string (RISC OS default: "Text",
                others default: "")
            local to buffer
            {not in Vi}
            {only available when compiled with the |+filetype|
            feature}
    Some systems store extra information about files besides name,
    datastamp and permissions. This option contains the extra information,
    the nature of which will vary between systems.
    The value of this option is usually set when the file is loaded, and
    may also change the way the file is written.
    It can affect the pattern matching of the automatic commands.
    |autocmd-filetypes|

                    *'fkmap'* *'fk'* *'nofkmap'* *'nofk'*
'fkmap' 'fk'        boolean (default off)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    When on, the keyboard is mapped for the Farsi character set.
    Normally you would set 'allowrevins' and use CTRL-_ in insert mode to
    toggle this option |i_CTRL-_|.  See |farsi.txt|.

                    *'formatoptions'* *'fo'*
'formatoptions' 'fo'    string (Vim default: "tcq", Vi default: "vt")
            local to buffer
            {not in Vi}
    This is a sequence of letters which describes how automatic
    formatting is to be done.  See |fo-table|.  When the 'paste' option is
    on, no formatting is done (like 'formatoptions' is empty).  Commas can
    be inserted for readability.
    To avoid problems with flags that are added in the future, use the
    "+=" and "-=" feature of ":set" |add-option-flags|.

                        *'formatprg'* *'fp'*
'formatprg' 'fp'    string (default "")
            global
            {not in Vi}
    The name of an external program that will be used to format the lines
    selected with the "gq" command.  The program must take the input on
    stdin and produce the output on stdout.  The Unix program "fmt" is
    such a program.  If this option is an empty string, the internal
    format function will be used |C-indenting|.  Environment variables are
    expanded |:set_env|.  See |option-backslash| about including spaces
    and backslashes.

                   *'gdefault'* *'gd'* *'nogdefault'* *'nogd'*
'gdefault' 'gd'        boolean    (default off)
            global
            {not in Vi}
    When on, the ":substitute" flag 'g' is default on.  This means that
    all matches in a line are substituted instead of one.  When a 'g' flag
    is given to a ":substitute" command, this will toggle the substitution
    of all or one match.  See |complex-change|.

        command        'gdefault' on    'gdefault' off    ~
        :s///          subst. all      subst. one
        :s///g          subst. one      subst. all
        :s///gg          subst. all      subst. one

                        *'grepformat'* *'gfm'*
'grepformat' 'gfm'    string    (default "%f:%l%m,%f  %l%m")
            global
            {not in Vi}
    Format to recognize for the ":grep" command output.
    This is a scanf-like string that uses the same format as the
    'errorformat' option: see |errorformat|.

                        *'grepprg'* *'gp'*
'grepprg' 'gp'        string    (default "grep -n", Win32: "findstr /n")
            global
            {not in Vi}
    Program to use for the ":grep" command. This option may contain '%'
    and '#' characters, which are expanded like when used in a
    command-line.  Environment variables are expanded |:set_env|.  See
    |option-backslash| about including spaces and backslashes.

    See also the section |:make_makeprg|, since most of the comments there
    apply equally to 'grepprg'.

                        *'guicursor'* *'gcr'*
'guicursor' 'gcr'    string    (default "n-v-c:block-Cursor,ve:ver35-Cursor,
                    o:hor50-Cursor,i-ci:ver25-Cursor,
                    r-cr:hor20-Cursor,sm:block-Cursor
                    -blinkwait175-blinkoff150-blinkon175")
            global
            {not in Vi}
            {only available when compiled with GUI enabled, and
            for MSDOS and Win32 console}
    This option tells Vim what the cursor should look like in different
    modes.  The option is a comma separated list of parts.  Each part
    consist of a mode-list and an argument-list:
        mode-list:argument-list,mode-list:argument-list,..
    The mode-list is a dash separated list of these modes:
        n    Normal mode
        v    Visual mode
        ve    Visual mode with 'selection' "exclusive" (same as 'v',
            if not specified)
        o    Operator-pending mode
        i    Insert mode
        r    Replace mode
        c    Command-line Normal (append) mode
        ci    Command-line Insert mode
        cr    Command-line Replace mode
        sm    showmatch in Insert mode
        a    all modes
    The argument-list is a dash separated list of these arguments:
        hor{N}    horizontal bar, {N} percent of the character height
        ver{N}    vertical bar, {N} percent of the character width
        block    block cursor, fills the whole character
            [only one of the above three should be present]
        blinkwait{N}                *cursor-blinking*
        blinkon{N}
        blinkoff{N}
            blink times for cursor: blinkwait is the delay before
            the cursor starts blinking, blinkon is the time that
            the cursor is shown and blinkoff is the time that the
            cursor is not shown.  The times are in msec.  When one
            of the numbers is zero, there is no blinking.  The
            default is: "blinkwait700-blinkon400-blinkoff250".
            These numbers are used for a missing entry.  This
            means that blinking is enabled by default.  To switch
            blinking off you can use "blinkon0".  The cursor only
            blinks when Vim is waiting for input, not while
            executing a command.
            To make the cursor blink in an xterm, see
            tools/blink.c.
        {group-name}
            a highlight group name, that sets the color and font
            for the cursor
    Examples of parts:
       n-c-v:block-nCursor    in Normal, Command-line and Visual mode, use a
                block cursor with colors from the "nCursor"
                highlight group
       i-ci:ver30-iCursor-blinkwait300-blinkon200-blinkoff150
                In Insert and Command-line Insert mode, use a
                30% vertical bar cursor with colors from the
                "iCursor" highlight group.  Blink a bit
                faster.

    The 'a' mode is different.  It will set the given argument-list for
    all modes.  It does not reset anything to defaults.  This can be used
    to do a common setting for all modes.  For example, to switch off
    blinking: "a:blinkon0"

    Examples of cursor highlighting:
>        :highlight Cursor gui=reverse guifg=NONE guibg=NONE
>        :highlight Cursor gui=NONE guifg=bg guibg=fg

    In an MSDOS or Win32 console, only the height of the cursor can be
    changed.  This can be done by specifying a block cursor, or a
    percentage for a vertical or horizontal cursor.

                        *'guifont'* *'gfn'*
'guifont' 'gfn'        string    (default "")
            global
            {not in Vi}
            {only available when compiled with GUI enabled}
    This is a list of fonts which should be tried when starting the GUI
    version of vim.  The fonts are separated with commas.  Spaces after a
    comma are ignored.  To include a comma in a font name precede it with
    a backslash.  Setting an option requires an extra backslash before a
    space and a backslash.  See also |option-backslash|.  For example:
>        :set guifont=Screen15,\ 7x13,font\\,with\\,commas
    will make vim try to use the font "Screen15" first, and if it fails
    it will try to use "7x13" and then "font,with,commas" instead.
    Win32 only:
>        :set guifont=*
    will bring up a font requester, where you can pick the font you want.
    If none of the fonts can be loaded, vim will keep the current setting.
    If an empty font list is given, vim will try using other resource
    settings (for X, it will use the Vim.font resource), and finally it
    will try some builtin default which should always be there ("7x13" in
    the case of X).  The font names given should be "normal" fonts.  Vim
    will try to find the related bold and italic fonts.
    For the Win32 GUI
    - takes these options in the font name:
        hXX - height is XX (points)
        wXX - width is XX (points)
        b   - bold
        i   - italic
        u   - underline
        s   - strikeout
      Use a ':' to separate the options.
    - A '_' can be used in the place of a space, so you don't need to use
      backslashes to escape the spaces.
    - Example:
>        :set guifont=courier_new:h12:w5:b
    See also |font-sizes|.

                        *'guioptions'* *'go'*
'guioptions' 'go'    string    (default "agimrt" (Unix) or "gmrt")
            global
            {not in Vi}
            {only available when compiled with GUI enabled}
    This option only has an effect in the GUI version of vim.  It is a
    sequence of letters which describes what components and options of the
    GUI should be used.
    To avoid problems with flags that are added in the future, use the
    "+=" and "-=" feature of ":set" |add-option-flags|.

    Valid letters are as follows:

      'a'    Autoselect:  If present, then whenever VISUAL mode is started,
        or the Visual area extended, Vim tries to become the owner of
        the windowing system's global selection.  This means that the
        Visually highlighted text is available for pasting into other
        applications as well as into Vim itself.  When the Visual mode
        ends, possibly due to an operation on the text, or when an
        application wants to paste the selection, the highlighted text
        is automatically yanked into the <"*> selection register.
        Thus the selection is still available for pasting into other
        applications after the VISUAL mode has ended.
            If not present, then Vim won't become the owner of the
        windowing system's global selection unless explicitly told to
        by a yank or delete operation.

      'f'    Foreground: Don't use fork() to detatch the GUI from the shell
        where it was started.  Use this for programs that wait for the
        editor to finish (e.g., an e-mail program).  Altenatively you
        can use "gvim -f" or ":gui -f" to start the GUI in the
        foreground.  |gui-fork|

      'i'    Use a Vim icon.  It's black&white, because of limitations of
        X11.  For a color icon, see |X11-icon|.

      'm'    Menu bar is present when 'm' is included.
      'g'    Grey menu items: Make menu items that are not active grey.  If
        'g' is not included inactive menu items are not shown at all.

      't'    Include tearoff menu items.  Currently only works for Win32
        and Motif 1.2 GUI.
      'T'    Include Toolbar.  Currently only in Win32 GUI.

      'r'    Right-hand scrollbar is present when 'r' is included.
      'l'    Left-hand scrollbar is present when 'l' is included.
      'b'    Bottom (horizontal) scrollbar is present when 'b' is included.

    And yes, you may even have scrollbars on the left AND the right if
    you really want to :-).  See |gui-scrollbars| for more information.

      'v'    Use a vertical button layout for dialogs.  When not included,
        a horizontal layout is preferred, but when it doesn't fit a
        vertical layout is used anyway.
      'p'    Use Pointer callbacks for X11 GUI.  This is required for some
        window managers.  If the cursor is not blinking or hollow at
        the right moment, try adding this flag.  This must be done
        before starting the GUI.  Set it in your gvimrc.  Adding or
        removing it after the GUI has started has no effect.

                        *'guipty'* *'noguipty'*
'guipty'        boolean    (default on)
            global
            {not in Vi}
            {only available when compiled with GUI enabled}
    Only in the GUI: If on, an attempt is made to open a pseudo-tty for
    I/O to/from shell commands.  See |gui-pty|.

                    *'helpfile'* *'hf'*
'helpfile' 'hf'        string    (default (Amiga) "vim:doc/help.txt"
                     (MSDOS) "$VIM\doc\help.txt"
                     (others) "$VIM/doc/help.txt")
            global
            {not in Vi}
    Name of the help file.  All help files should be placed together in
    one directory.  Environment variables are expanded |:set_env|.  For
    example: "$VIM/doc/help.txt".  If $VIM is not set, $HOME is also
    tried.  Also see |$VIM|.  |option-backslash| about including spaces
    and backslashes.

                        *'helpheight'* *'hh'*
'helpheight' 'hh'    number    (default 20)
            global
            {not in Vi}
    Minimal initial height of the help window when it is opened with the
    ":help" command.  The initial height of the help window is half of the
    current window, or (when the 'ea' option is on) the same as other
    windows.  When the height is less than 'helpheight', the height is
    set to 'helpheight'.  Set to zero to disable.

                     *'hidden'* *'hid'* *'nohidden'* *'nohid'*
'hidden' 'hid'        boolean    (default off)
            global
            {not in Vi}
    When off a buffer is unloaded when it is abandoned.  When on a buffer
    becomes hidden when it is abandoned.  If the buffer is still displayed
    in another window, it does not become hidden, of course.
    The commands that move through the buffer list sometimes make a buffer
    hidden although the 'hidden' option is off: When the buffer is
    modified, 'autowrite' is off or writing is not possible, and the '!'
    flag was used.  See also |windows.txt|.
    WARNING: It's easy to forget that you have changes in hidden buffers.
    Think twice when using ":q!" or ":qa!".

                        *'highlight'* *'hl'*
'highlight' 'hl'    string    (default (as a single string):
                     "8:SpecialKey,@:NonText,d:Directory,
                     e:ErrorMsg,i:IncSearch,l:Search,m:MoreMsg,
                     M:ModeMsg,n:LineNr,r:Question,
                     s:StatusLine,S:StatusLineNC,t:Title,
                     v:Visual,w:WarningMsg")
            global
            {not in Vi}
    This option can be used to set highlighting mode for various
    occasions.  It is a comma separated list of character pairs.  The
    first character in a pair gives the occasion, the second the mode to
    use for that occasion.  The occasions are:
    |hl-SpecialKey|     8  Meta and special keys listed with ":map"
    |hl-NonText|     @  '~' and '@' at the end of the window and
                characters from 'showbreak'
    |hl-Directory|     d  directories in CTRL-D listing and other special
                things in listings
    |hl-ErrorMsg|     e  error messages
             h  (obsolete, ignored)
    |hl-IncSearch|     i  'incsearch' highlighting
    |hl-Search|     l  last search pattern highlighting (see 'hlsearch')
    |hl-MoreMsg|     m  |more-prompt|
    |hl-ModeMsg|     M  Mode (e.g., "-- INSERT --")
    |hl-LineNr|     n  line number for ":number" and ":#" commands
    |hl-Question|     r  |hit-return| prompt and yes/no questions
    |hl-StatusLine|     s  status line of current window |status-line|
    |hl-StatusLineNC| S  status lines of not-current windows
    |hl-Title|     t  Titles for output from ":set all", ":autocmd" etc.
    |hl-Visual|     v  Visual mode
    |hl-WarningMsg|     w  warning messages

    The display modes are:
        r    reverse        (termcap entry "mr" and "me")
        i    italic        (termcap entry "ZH" and "ZR")
        b    bold        (termcap entry "md" and "me")
        s    standout    (termcap entry "so" and "se")
        u    underline    (termcap entry "us" and "ue")
        n    no highlighting
        -    no highlighting
        :    use a highlight group
    The default is used for occasions that are not included.
    If you want to change what the display modes do, see |dos-colors|
    for an example.
    When using the ':' display mode, this must be followed by the name of
    a highlight group.  A highlight group can be used to define any type
    of highlighting, including using color.  See |:highlight| on how to
    define one.  The default uses a different group for each occasion.
    See |highlight-default| for the default highlight groups.

                 *'hlsearch'* *'hls'* *'nohlsearch'* *'nohls'*
'hlsearch' 'hls'    boolean    (default off)
            global
            {not in Vi}
            {not available when compiled without the
            |+extra_search| feature}
    When there is a previous search pattern, highlight all its matches.
    The type of highlighting used can be set with the 'l' occasion in the
    'highlight' option.  This uses the "Search" highlight group by
    default.  Note that only the matching text is highlighted, any offsets
    are not applied.
    See also: 'incsearch'.
    When you get bored looking at the highlighted matches, you can turn it
    off with |:nohlsearch|.  As soon as you use a search command, the
    highlighting comes back.

                        *'history'* *'hi'*
'history' 'hi'        number    (Vim default: 20, Vi default: 0)
            global
            {not in Vi}
    A history of ":" commands, and a history of previous search patterns
    are remembered.  This option decides how many entries may be stored in
    each of these histories (see |cmdline-editing|).

                     *'hkmap'* *'hk'* *'nohkmap'* *'nohk'*
'hkmap' 'hk'        boolean (default off)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    When on, the keyboard is mapped for the Hebrew character set.
    Normally you would set 'allowrevins' and use CTRL-_ in insert mode to
    toggle this option.  See |rightleft.txt|.

                 *'hkmapp'* *'hkp'* *'nohkmapp'* *'nohkp'*
'hkmapp' 'hkp'        boolean (default off)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    When on, phonetic keyboard mapping is used.  'hkmap' must also be on.
    This is useful if you have a non-Hebrew keyboard.
    See |rightleft.txt|.

                        *'icon'* *'noicon'*
'icon'            boolean    (default off, on when title can be restored)
            global
            {not in Vi}
    When on, the icon text of the window will be set to the name of the
    file currently being edited.  Only the last part of the name is used.
    Overridden by the 'iconstring' option.
    Only works if the terminal supports setting window icons (currently
    only Unix xterm and iris-ansi).  When Vim was compiled with HAVE_X11
    defined, the original icon will be restored if possible |X11|.
    See |X11-icon| for changing the icon on X11.

                        *'iconstring'*
'iconstring'        string    (default "")
            global
            {not in Vi}
    When this options is not empty, it will be used for the icon of the
    window.  This happens regardless of the 'icon' option.
    Only works if the terminal supports setting window icons (currently
    only Unix xterm and iris-ansi).  When Vim was compiled with HAVE_X11
    defined, the original icon will be restored if possible |X11|.
    Does not work for MS Windows.

                   *'ignorecase'* *'ic'* *'noignorecase'* *'noic'*
'ignorecase' 'ic'    boolean    (default off)
            global
    Ignore case in search patterns.  Also used when searching in the tags
    file.

                        *'include'* *'inc'*
'include' 'inc'        string    (default "^#\s*include")
            global
            {not in Vi}
    Pattern to be used to find an include command.  It is a search
    pattern, just like for the "/" command (See |pattern|).  The default
    value is for C programs.  This option is used for the commands "[i",
    "]I", "[d", etc..  The 'isfname' option is used to recognize the file
    name that comes after the matched pattern.  See |option-backslash|
    about including spaces and backslashes.

                 *'incsearch'* *'is'* *'noincsearch'* *'nois'*
'incsearch' 'is'    boolean    (default off)
            global
            {not in Vi}
            {not available when compiled without the
            |+extra_search| feature}
    While typing a search pattern, show immediately where the so far
    typed pattern matches.  The matched string is highlighted.  If the
    pattern is invalid or not found, nothing is shown.  The screen will
    be updated often, this is only useful on fast terminals.  Note that
    the match will be shown, but the cursor is not actually positioned
    there.  You still need to finish the search command with <CR> to move
    the cursor.  The highlighting can be set with the 'i' flag in
    'highlight'.  See also: 'hlsearch'.

                   *'infercase'* *'inf'* *'noinfercase'* *'noinf'*
'infercase' 'inf'    boolean    (default off)
            local to buffer
            {not in Vi}
    When doing keyword completion in insert mode |ins-completion|, and
    'ignorecase' is also on, the case of the match is adjusted.  If the
    typed text contains a lowercase letter where the match has an upper
    case letter, the completed part is made lower case.  If the typed text
    has no lower case letters and the match has a lower case letter where
    the typed text has an upper case letter, and there is a letter before
    it, the completed part is made uppercase.

                   *'insertmode'* *'im'* *'noinsertmode'* *'noim'*
'insertmode' 'im'    boolean    (default off)
            global
            {not in Vi}
    Makes Vim work in a way that Insert mode is the default mode.  Useful
    if you want to use Vim as a modeless editor.
    These Insert mode commands will be useful:
    - Use the cursor keys to move around.
    - Use CTRL-O to execute one Normal mode command |i_CTRL-O|).  When
      this is a mapping, it is executed as if 'insertmode' was off.
      Normal mode remains active until the mapping is finished.
                                *i_CTRL-L*
    - Use CTRL-L to execute a number of Normal mode commands, then use
      <Esc> to get back to Insert mode.

    These items change when 'insertmode' is set:
    - when starting to edit of a file, Vim goes to Insert mode.
    - <Esc> in Insert mode is a no-op and beeps.
    - <Esc> in Normal mode makes Vim go to Insert mode.
    - CTRL-L in Insert mode is a command, it is not inserted.
    - CTRL-Z in Insert mode suspends Vim, see |CTRL-Z|.    *i_CTRL-Z*
    However, when <Esc> is used inside a mapping, it behaves like
    'insertmode' was not set.  This was done to be able to use the same
    mappings with 'insertmode' set or not set.

                        *'isfname'* *'isf'*
'isfname' 'isf'        string    (default for MS-DOS, Win32 and OS/2:
                        "@,48-57,/,.,-,_,+,,,$,:,\"
                 for AMIGA: "@,48-57,/,.,-,_,+,,,$,:"
                 otherwise: "@,48-57,/,.,-,_,+,,,$,:,~")
            global
            {not in Vi}
    The characters given by this option are included in file names and
    path names.  Filenames are used for commands like "gf", "[i" and in
    the tags file.  Besides the characters in this option characters that
    are defined by the C function isalpha() are also always included
    (this depends on the character set and "locale").

    The format of this option is a list of parts, separated with commas.
    Each part can be a single character number or a range.  A range is two
    character numbers with '-' in between.  A character number can be a
    decimal number between 0 and 255 or the ASCII character itself (does
    not work for digits).  Example:
        "_,-,128-140,#-43"    (include '_' and '-' and the range
                    128 to 140 and '#' to 43)
    If a part starts with '^', the following character number or range
    will be excluded from the option.  The option is interpreted from left
    to right.  Put the excluded character after the range where it is
    included.  To include '^' itself use it as the last character of the
    option or the end of a range.  Example:
        "^a-z,#,^"    (exclude 'a' to 'z', include '#' and '^')
    If the character is '@', all characters where isalpha() returns TRUE
    are included.  Normally these are the characters a to z and A to Z,
    plus accented characters.  To include '@' itself use "@-@".  Examples:
        "@,^a-z"    All alphabetic characters, excluding lower
                case letters.
        "a-z,A-Z,@-@"    All letters plus the '@' character.
    A comma can be included by using it where a character number is
    expected.  Example:
        "48-57,,,_"    Digits, command and underscore.
    A comma can be excluded by prepending a '^'.  Example:
        " -~,^,,9"    All characters from space to '~', excluding
                comma, plus <Tab>.
    See |option-backslash| about including spaces and backslashes.

                        *'isident'* *'isi'*
'isident' 'isi'        string    (default for MS-DOS, Win32 and OS/2:
                       "@,48-57,_,128-167,224-235"
                otherwise: "@,48-57,_,192-255")
            global
            {not in Vi}
    The characters given by this option are included in identifiers.
    Identifiers are used in recognizing environment variables and after
    a match of the 'define' option.  See 'isfname' for a description of
    the format of this option.
    Careful: If you change this option, it might break expanding
    environment variables.  E.g., when '/' is included and Vim tries to
    expand "$HOME/.viminfo".  Maybe you should change 'iskeyword' instead.

                        *'iskeyword'* *'isk'*
'iskeyword' 'isk'    string (Vim default for MS-DOS and Win32:
                        "@,48-57,_,128-167,224-235"
                   otherwise:  "@,48-57,_,192-255"
                Vi default: "@,48-57,_")
            local to buffer
            {not in Vi}
    Keywords are used in searching and recognizing with many commands:
    "w", "*", "[i", etc.  See 'isfname' for a description of the format of
    this option.  For C programs you could use "a-z,A-Z,48-57,_,.,-,>".
    For a help file it is set to all non-blank printable characters except
    '*', '"' and '|'.  When the 'lisp' option is on the '-' character is
    always included.

                        *'isprint'* *'isp'*
'isprint' 'isp'    string    (default for MS-DOS and Win32: "@,~-255"
                  otherwise:           "@,161-255")
            global
            {not in Vi}
    The characters given by this option are displayed directly on the
    screen.  The characters from space (ascii 32) to '~' (ascii 126) are
    always displayed directly, even when they are not included in
    'isprint' or excluded.  See 'isfname' for a description of the format
    of this option.  Non-printable characters are displayed with two
    characters:
          0 -  31    "^@" - "^_"
         32 - 126    always single characters
           127        "^?"
        128 - 159    "~@" - "~_"
        160 - 254    "| " - "|~"
           255        "~?"

                   *'joinspaces'* *'js'* *'nojoinspaces'* *'nojs'*
'joinspaces' 'js'    boolean    (default on)
            global
            {not in Vi}
    Insert two spaces after a '.', '?' and '!' with a join command.
    When 'cpoptions' includes the 'j' flag, only do this after a '.'.
    Otherwise only one space is inserted.

                    *'keymodel'* *'km'*
'keymodel' 'km'        string    (default "")
    List of comma separated words, which enable special things that keys
    can do.  These values can be used:
       startsel    Using a shifted special key starts selection (either
            Select mode or Visual mode, depending on "key" being
            present in 'selectmode').
       stopsel    Using a not-shifted special key stops selection.
    Special keys in this context are the cursor keys, <End>, <Home>,
    <PageUp> and <PageDown>.
    The 'keymodel' option is set by the |:behave| command.

                    *'keywordprg'* *'kp'*
'keywordprg' 'kp'    string    (default "man" or "man -s",
                        OS/2: "view /", VMS: "help")
            global
            {not in Vi}
    Program to use for the |K| command.  Environment variables are
    expanded |:set_env|.  When empty ":help" is used.
    When "man" is used, Vim will automatically translate a count for the
    "K" command to a section number.  Also for "man -s", in which case the
    "-s" is removed when there is no count.
    See |option-backslash| about including spaces and backslashes.
    Example:
>        :set keywordprg=man\ -s

                    *'langmap'* *'lmap'*
'langmap' 'lmap'    string    (default "")
            global
            {not in Vi}
            {only available when compiled with the |+langmap|
            feature}
    This option allows support for keyboards that have a mode for a
    special language.  The idea is that when you are typing text in Insert
    mode your keyboard is switched in the special language mode, you get
    different key codes for the special characters.  When in command mode
    the 'langmap' option takes care of translating these special
    characters to the original meaning of the key.  This means you don't
    have to change the keyboard mode to be able to execute normal mode
    commands.

    Example (for greek):                    *greek*
>        :set langmap=┴A,┬B,╪C,─D,┼E,╓F,├G,╟H,╔I,╬J,╩K,╦L,╠M,═N,╧O,╨P,QQ,╤R,╙S,╘T,╚U,┘V,WW,╫X,╒Y,╞Z,ßa,Γb,°c,Σd,σe,÷f,πg,τh,Θi,εj,Ωk,δl,∞m,φn,∩o,≡p,qq,±r,≤s,⌠t,Φu,∙v,≥w,≈x,⌡y,µz
    Example (exchanges meaning of z and y for commands):
>        :set langmap=zy,yz,ZY,YZ

    The 'langmap' option is a list of parts, separated with commas.  Each
    part can be in one of two forms:
    1.  A list of pairs.  Each pair is a "from" character immediately
        followed by the "to" character.  Examples: "aA", "aAbBcC".
    2.  A list of "from" characters, a semi-colon and a list of "to"
        characters.  Example: "abc;ABC"
    Example: "aA,fgh;FGH,cCdDeE"
    Special characters need to be preceded with a backslash.  These are
    ";", ',' and backslash itself.

    This will allow you to activate vim actions without having to switch
    back and forth between the languages.  Your language characters will
    be understood as normal vim English characters (according to the
    langmap mappings) in the following cases:
     o Normal/Visual mode (commands, buffer/register names, user mappings)
     o Insert/Replace Mode: Register names after CTRL-R
     o Insert/Replace Mode: Mappings
    Characters entered in Command-line mode will NOT be affected by
    this option.   Note that this option can be changed at any time
    allowing to switch between mappings for different languages/encodings.
    Use a mapping to avoid having to type it each time!

                    *'laststatus'* *'ls'*
'laststatus' 'ls'    number    (default 1)
            global
            {not in Vi}
    The value of this option influences when the last window will have a
    status line:
        0: never
        1: only if there are at least two windows
        2: always
    The screen looks nicer with a status line if you have several
    windows, but it takes another screen line.

                    *'lazyredraw'* *'lz'*
'lazyredraw' 'lz'    boolean    (default off)
            global
            {not in Vi}
    When this option is set, the screen will not be redrawn while
    executing macros, registers and other commands that have not been
    typed.

                   *'linebreak'* *'lbr'* *'nolinebreak'* *'nolbr'*
'linebreak' 'lbr'    boolean    (default off)
            local to window
            {not in Vi}
    If on Vim will wrap long lines at a character in 'breakat' rather
    than at the last character that fits on the screen.  Unlike
    'wrapmargin' and 'textwidth', this does not insert <EOL>s in the file,
    it only affects the way the file is displayed, not its contents.  The
    value of 'showbreak' is used to put in front of wrapped lines.  This
    option is not used when the 'wrap' option is off.  Note that <Tab>
    characters after an <EOL> are mostly not displayed correctly.

                        *'lines'*
'lines'            number    (default 24 or terminal height)
            global
    Number of lines in the display.  Normally you don't need to set this.
    That is done automatically by the terminal initialization code.  When
    you do set this, and Vim is unable to change the physical number of
    lines on the display, redisplaying may be wrong.

                        *'lisp'* *'nolisp'*
'lisp'            boolean    (default off)
            local to buffer
            {not available when compiled without the |+lispindent|
            feature}
    Lisp mode: When a return is typed in insert mode set the indent for
    the next line to Lisp standards (well, sort of).  Also happens with
    "cc" or "S".  'autoindent' must also be on for this to work.  The '-'
    character is included in keyword characters.  Redefines the "="
    operator to use this same indentation algorithm rather than calling an
    external program if 'equalprg' is empty.  This option is reset when
    'paste' is set.  {Vi: Does it a little bit differently}

                        *'list'* *'nolist'*
'list'            boolean    (default off)
            local to window
    List mode: Show tabs as CTRL-I, show end of line with $.  Useful to
    see the difference between tabs and spaces and for trailing blanks.
    Note that this will also affect formatting (set with 'textwidth' or
    'wrapmargin') when 'cpoptions' includes 'L'.  See 'listchars' for
    changing the way tabs are displayed.

                        *'listchars'* *'lcs'*
'listchars' 'lcs'    string    (default "eol:$")
            global
            {not in Vi}
    Strings to use in 'list' mode.  It is a comma separated list of string
    settings.
      eol:c        Character to show at the end of each line.  When
            omitted, there is no extra character at the end of the
            line.
      tab:xy    Two characters to be used to show a Tab.  The first
            char is used once.  The second char is repeated to
            fill the space that the Tab normally occupies.
            "tab:>-" will show a Tab that takes four spaces as
            ">---".  When omitted, a Tab is show as ^I.
      trail:c    Character to show for trailing spaces.  When omitted,
            trailing spaces are blank.
      extends:c    Character to show in the last column, when 'wrap' is
            off and the line continues beyond the right of the
            screen.
    The characters ':' and ',' cannot be used.
    Examples:
>        :set lcs=tab:>-,trail:-
>        :set lcs=tab:>-,eol:<
    The "NonText" highlighting will be used for these characters.


                        *'magic'* *'nomagic'*
'magic'            boolean    (default on)
            global
    Changes the special characters that can be used in search patterns.
    See |pattern|.

                        *'makeef'* *'mef'*
'makeef' 'mef'        string    (Amiga default: "t:vim##.Err",
                      Unix: "/tmp/vim##.err",
                    others: "vim##.err")
            global
            {not in Vi}
            {not available when compiled without the |+quickfix|
            feature}
    Name of the errorfile for the ":make" command (see |:make_makeprg|).
    When "##" is included, it is replaced by a number to make the name
    unique.  This makes sure that the ":make" command doesn't overwrite an
    existing file.
    NOT used for the ":cf" command.  See 'errorfile' for that.
    Environment variables are expanded |:set_env|.
    See |option-backslash| about including spaces and backslashes.

                        *'makeprg'* *'mp'*
'makeprg' 'mp'        string    (default "make")
            global
            {not in Vi}
    Program to use for the ":make" command.  See |:make_makeprg|.  This
    option may contain '%' and '#' characters, which are expanded like
    when used in a command-line.  Environment variables are expanded
    |:set_env|.  See |option-backslash| about including spaces and
    backslashes.

                        *'matchpairs'* *'mps'*
'matchpairs' 'mps'    string    (default "(:),{:},[:]")
            local to buffer
            {not in Vi}
    Characters that form pairs.  The |%| command jumps from one to the
    other.  Currently only single character pairs are allowed.  The
    characters must be separated by a colon.  The pairs must be separated
    by a comma.  Example for including '<' and '>' (HTML):
>        set mps=(:),{:},[:],<:>

                        *'matchtime'* *'mat'*
'matchtime' 'mat'    number    (default 5)
            global
            {not in Vi}{in Nvi}
    Tenths of a second to show the matching paren, when 'showmatch' is
    set.  Note that this is not in milliseconds, like other options that
    set a time.  This is to be compatible with Nvi.

                        *'maxfuncdepth'* *'mfd'*
'maxfuncdepth' 'mfd'    number    (default 100)
            global
            {not in Vi}
    Maximum depth of function calls for user functions.  This normally
    catches endless recursiveness.  When using a recursive function with
    more depth, set 'maxfuncdepth' to a bigger number.  But this will use
    more memory, there is the danger of failing when memory is exhausted.
    See also |:function|.

                        *'maxmapdepth'* *'mmd'*
'maxmapdepth' 'mmd'    number    (default 1000)
            global
            {not in Vi}
    Maximum number of times a mapping is done without resulting in a
    character to be used.  This normally catches endless mappings, like
    ":map x y" with ":map y x".  It still does not catch ":map g wg",
    because the 'w' is used before the next mapping is done.  See also
    |key-mapping|.

                        *'maxmem'* *'mm'*
'maxmem' 'mm'        number    (default 512)
            global
            {not in Vi}
    Maximum amount of memory (in Kbyte) to use for one buffer.  When this
    limit is reached allocating extra memory for a buffer will cause
    other memory to be freed.  See also 'maxmemtot'.

                        *'maxmemtot'* *'mmt'*
'maxmemtot' 'mmt'    number    (default 2048, or half the amount of memory
                available)
            global
            {not in Vi}
    Maximum amount of memory (in Kbyte) to use for all buffers together.
    See also 'maxmem'.

                   *'modeline'* *'ml'* *'nomodeline'* *'noml'*
'modeline' 'ml'        boolean    (Vim default: on, Vi default: off)
            local to buffer
                        *'modelines'* *'mls'*
'modelines' 'mls'    number    (default 5)
            global
            {not in Vi}
    If 'modeline' is on 'modelines' gives the number of lines that is
    checked for set commands.  If 'modeline' is off or 'modelines' is zero
    no lines are checked.  See |modeline|.  'modeline' is reset when
    'compatible' is set.

                 *'modified'* *'mod'* *'nomodified'* *'nomod'*
'modified' 'mod'    boolean    (default off)
            local to buffer
            {not in Vi}
    When on the buffer is considered to be modified.  This option is set
    by every command that makes a change to the buffer.  Only the undo
    command may reset it, when all changes have been undone.

                        *'more'* *'nomore'*
'more'            boolean    (Vim default: on, Vi default: off)
            global
            {not in Vi}
    When on, listings pause when the whole screen is filled.  You will get
    the |more-prompt|.  When this option is off there are no pauses, the
    listing continues until finished.
    When 'compatible' is set this option is reset.

                        *'mouse'*
'mouse'            string    (default "", "a" for GUI, MS-DOS and Win32)
            global
            {not in Vi}
    Enable the use of the mouse.  Only works for certain terminals
    (MS-DOS, Win32 |win32-mouse| and xterm).  For using the mouse in the
    GUI, see |gui-mouse|.
    The mouse can be enabled for different modes:
        n    Normal mode
        v    Visual mode
        i    Insert mode
        c    Command-line mode
        h    all previous modes when editing a help file
        a    all previous modes
        r    for |hit-return| prompt
    Normally you would enable the mouse in all four modes with:
>        :set mouse=a
    When the mouse is not enabled, the GUI will still use the mouse for
    modeless selection.  This doesn't move the text cursor.

    Note: When enabling the mouse in an xterm, the xterm copy/paste can
    still be used by keeping the shift key pressed.
    See |mouse-using|.

            *'mousefocus'* *'mousef'* *'nomousefocus'* *'nomousef'*
'mousefocus' 'mousef'    boolean    (default off)
            global
            {not in Vi}
            {only works in the GUI}
    The window that the mouse pointer is on is automatically activated.
    When changing the window layout or window focus in another way, the
    mouse pointer is moved to the window with keyboad focus.  Off is the
    default because it makes using the pull down menus a little goofy, as
    a pointer transit may activate a window unintentionally.

            *'mousehide'* *'mh'* *'nomousehide'* *'nomh'*
'mousehide' 'mh'    boolean    (default off)
            global
            {not in Vi}
            {only works in the GUI}
    When on, the mouse pointer is hidden when characters are typed.
    The mouse pointer is restored when the mouse is moved.

                        *'mousemodel'* *'mousem'*
'mousemodel' 'mousem'    string    (default "extend", "popup" for MS-DOS and Win32)
            global
            {not in Vi}
    Sets the model to use for the mouse.  The name mostly specifies what
    the right mouse button is used for:
        extend    Right mouse button extends a selection.  This works
            like in an xterm.
        popup    Right mouse button pops up a menu.  The shifted left
            mouse button extends a selection.  This works like
            with Microsoft Windows
    Overview of what button does what for each model:
    mouse            extend        popup  ~
    left click        place cursor    place cursor
    left drag        start selection    start selection
    shift-left        search word        extend selection
    right click        extend selection    popup menu
    right drag        extend selection    -
    middle click        paste        -

    In the "popup" model the right mouse button produces a pop-up menu.
    You need to define this first, see |win32-popup-menu|.

    Note that you can further refine the meaning of buttons with mappings.
    See |gui-mouse-mapping|.  But mappings are NOT used for modeless
    selection (because that's handled in the GUI code directly).

    The 'mousemodel' option is set by the |:behave| command.

                        *'mousetime'* *'mouset'*
'mousetime' 'mouset'    number    (default 500)
            global
            {not in Vi}
    Only for GUI, MS-DOS, Win32 and Unix with xterm.  Defines the maximum
    time in msec between two mouse clicks for the second click to be
    recognized as a multi click.

                            *'nrformats'* *'nf'*
'nrformats' 'nf'    string    (default "octal,hex")
            local to buffer
            {not in Vi}
    This defines what bases Vim will consider for numbers when using the
    CTRL-A and CTRL-X commands for adding to and subtracting from a number
    respectively; see |CTRL-A| for more info on these commands.
    If "octal" is included, numbers that start with a zero will be
    considered to be octal.  Example: Using CTRL-A on "007" results in
    "010".
    If "hex" is included, numbers starting with "0x" or "0X" will be
    considered to be hexadecimal.  Example: Using CTRL-X on "0x100"
    results in "0x0ff".
    Numbers which simply begin with a digit in the range 1-9 are always
    considered decimal.  This also happens for numbers that are not
    recognized as octal or hex.

                       *'number'* *'nu'* *'nonumber'* *'nonu'*
'number' 'nu'        boolean    (default off)
            local to window
    Print the line number in front of each line.  Tip: If you don't like
    wrapping lines to mix with the line numbers, set the 'showbreak'
    option to eight spaces:
        :set showbreak=\ \ \ \ \ \ \ \

                        *'paragraphs'* *'para'*
'paragraphs' 'para'    string    (default "IPLPPPQPP LIpplpipbp")
            global
    Specifies the nroff macros that separate paragraphs.  These are pairs
    of two letters (see |object-motions|).

                        *'paste'* *'nopaste'*
'paste'            boolean    (default off)
            global
            {not in Vi}
    Put Vim in Paste mode.  This is useful if you want to cut or copy
    some text from one window and paste it in Vim.  This will avoid
    unexpected effects.
    Setting this option is useful when using Vim in a terminal, where Vim
    cannot distiguish between typed text and pasted text.  In the GUI, Vim
    knows about pasting and will mostly do the right thing without 'paste'
    being set.
    When the 'paste' option is switched on (also when it was already on):
        - mapping in Insert mode and Command-line mode is disabled
        - abbreviations are disabled
        - 'textwidth' is set to 0
        - 'wrapmargin' is set to 0
        - 'autoindent' is reset
        - 'smartindent' is reset
        - 'cindent' is reset
        - 'softtabstop' is set to 0
        - 'lisp' is reset
        - 'revins' is reset
        - 'ruler' is reset
        - 'showmatch' is reset
        - 'formatoptions' is used like it is empty
    NOTE: When you start editing another file while the 'paste' option is
    on, settings from the modelines or autocommands may change the
    settings again, causing trouble when pasting text.  You might want to
    set the 'paste' option again.
    When the 'paste' option is reset the mentioned options are restored to
    the value before the moment 'paste' was switched from off to on.
    Resetting 'paste' before ever setting it does not have any effect.  If
    you use this often, you could map a function key to the command ":set
    invpaste^V^M".

                        *'patchmode'* *'pm'*
'patchmode' 'pm'    string    (default "")
            global
            {not in Vi}
    When non-empty the oldest version of a file is kept.  This can be used
    to keep the original version of a file if you are changing files in a
    source distribution.  Only the first time that a file is edited a copy
    of the original file will be kept.  The name of the copy is the name
    of the original file with the string in the 'patchmode' option
    appended.  This option should start with a dot.  Use a string like
    ".org".  'backupdir' must not be empty for this to work (Detail: The
    backup file is renamed to the patchmode file after the new file has
    been successfully written, that's why it must be possible to write a
    backup file).  If there was no file to be backed up, an empty file is
    created.

                        *'path'* *'pa'*
'path' 'pa'        string    (default on Unix: ".,/usr/include,,"
                   on OS/2:       ".,/emx/include,,"
                   other systems: ".,,")
            global
            {not in Vi}
    This is a list of directories which will be searched when using the
    gf, [f, ]f, ^Wf and other commands, provided that the file being
    searched for has a relative path (not starting with '/').  The
    directories in the 'path' option may be relative or absolute.
    - Use commas to separate directory names:
        :set path=.,/usr/local/include,/usr/include
    - Spaces can also be used to separate directory names (for backwards
      compatibility with version 3.0).  To have a space in a directory
      name, precede it with an extra backslash, and escape the space:
        :set path=.,/dir/with\\\ space
    - To include a comma in a directory name precede it with an extra
      backslash:
        :set path=.,/dir/with\\,comma
    - To search relative to the directory where the current file is use
        :set path=.
    - To search in the current directory use an empty string between two
      commas:
        :set path=,,
    - A directory name may end in a ':' or '/'.
    - Environment variables are expanded |:set_env|.
    - Use wildcards to specify directories more freely, e.g.,
        :set path=/usr/include/*
      means all subdirectories below /usr/include (but not /usr/include
      itself).
    - Use '**' if you want the whole subtree to be searched:
        :set path=/home/user_x/src/**
      means search in the whole subtree under "/home/usr_x/src". (to avoid
      endless recursions, the depth is restricted to 100 levels)
    - Give wildcards and recursions in any order:
        :set path=/**/include/**
      specifies a path with at least one directory /include/ in it.
    - The set of allowed wildcards and the possible usage depend on the
      operating system, but /etc/*/etc and /etc/**/etc work on any
      system. |:_%<|
    - Careful with '\' characters, type two to get one in the option:
        :set path=.,c:\\include
      Or just use '/' instead:
        :set path=.,c:/include
    Don't forget "." or files won't even be found in the same directory as
    the file!
    The maximum length is limited.  How much depends on the system, mostly
    it is something like 256 or 1024 characters.
    You can check if all the include files are found, using the value of
    'path', see |:checkpath|.
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    directories from the list.  This avoids problems when a future version
    uses another default.  To remove the current directory use:
        :set path-=
    To add the current directory use:
        :set path+=

                   *'readonly'* *'ro'* *'noreadonly'* *'noro'*
'readonly' 'ro'        boolean    (default off)
            local to buffer
            {not in Vi}
    If on, writes fail unless you use a '!'.  Protects you from
    accidentally overwriting a file.  Default on when Vim is started
    in read-only mode ("vim -R") or when the executable is called "view".
    {not in Vi:}  When using the ":view" command the 'readonly' option is
    set for the newly edited buffer.  When using ":w!" the 'readonly'
    option is reset for the current buffer.

                        *'remap'* *'noremap'*
'remap'            boolean    (default on)
            global
    Allows for mappings to work recursively.  If you do not want this for
    a single entry, use the :noremap[!] command.

                        *'report'*
'report'        number    (default 2)
            global
    Threshold for reporting number of lines changed.  When the number of
    changed lines is more than 'report' a message will be given for most
    ":" commands.  For the ":substitute" command the number of
    substitutions is used instead of the number of lines.

             *'restorescreen'* *'rs'* *'norestorescreen'* *'nors'*
'restorescreen' 'rs'    boolean    (default on)
            global
            {not in Vi}  {Windows 95/NT version only}
    When set, the screen contents is restored when exiting Vim.  This also
    happens when executing external commands.

    For non-Windows Vim: You can set or reset the 't_ti' and 't_te'
    options in your .vimrc.  To disable restoring:
        set t_ti= t_te=
    To enable restoring (for an xterm):
        set t_ti=^[7^[[r^[[?47h t_te=^[[?47l^[8
    (Where ^[ is an <Esc>, type CTRL-V <Esc> to insert it)

                       *'revins'* *'ri'* *'norevins'* *'nori'*
'revins' 'ri'        boolean    (default off)
            global
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    Inserting characters in Insert mode will work backwards.  See "typing
    backwards" |ins-reverse|.  This option can be toggled with the CTRL-_
    command in Insert mode, when 'allowrevins' is set.  This option is
    reset when 'compatible' or 'paste' is set.

                 *'rightleft'* *'rl'* *'norightleft'* *'norl'*
'rightleft' 'rl'    boolean    (default off)
            local to window
            {not in Vi}
            {only available when compiled with the |+rightleft|
            feature}
    When on, display orientation becomes right-to-left, i.e., character
    that are stored in the file appear from the right to the left.  Using
    this option, it is possible to edit files for languages that are
    written from the right to the left such as Hebrew and Arabic.  This
    option is per window, so it is possible to edit mixed files
    simultaneously, or to view the same file in both ways (this is
    sometimes usefull when editing Hebrew TeX--XeT files).  See
    |rightleft.txt|.

                     *'ruler'* *'ru'* *'noruler'* *'noru'*
'ruler' 'ru'        boolean    (default off)
            global
            {not in Vi}
    Show the line and column number of the cursor position, separated by a
    comma.  Each window has its own ruler.
    If a window has a status line, the ruler is shown there.  Otherwise it
    is shown in the last line of the screen.
    If there are characters in the line that take two positions on the
    screen, both the "real" column and the screen column are shown,
    separated with a dash.
    For an empty line "0-1" is shown.
    For an empty buffer the line number will also be zero: "0,0-1".
    This option is reset when the 'paste' option is set.
    If you don't want to see the ruler all the time but want to know where
    you are, use "g CTRL-G" |g_CTRL-G|.

                        *'scroll'* *'scr'*
'scroll' 'scr'        number    (default 'lines' / 2)
            local to window
    Number of lines to scroll with CTRL-U and CTRL-D commands.  Will be
    set to half the number of lines in the window when the window size
    changes.  If you give a count to the CTRL-U or CTRL-D command it will
    be used as the new value for 'scroll'.  Reset to 'lines' / 2 with
    ":set scroll=0".   {Vi is a bit different: 'scroll' gives the number
    of screen lines instead of file lines, makes a difference when lines
    wrap}

                        *'scrolljump'* *'sj'*
'scrolljump' 'sj'    number    (default 1)
            global
            {not in Vi}
    Minimal number of lines to scroll when the cursor gets off the
    screen (e.g., with "j").  Not used for scroll commands (e.g., CTRL-E,
    CTRL-D).  Useful if your terminal scrolls very slowly.

                        *'scrolloff'* *'so'*
'scrolloff' 'so'    number    (default 0)
            global
            {not in Vi}
    Minimal number of screen lines to keep above and below the cursor.
    This will make some context visible around where you are working.  If
    you set it to a very large value (999) the cursor line will always be
    in the middle of the window (except at the start or end of the file or
    when long lines wrap).

                        *'sections'* *'sect'*
'sections' 'sect'        string    (default "SHNHH HUnhsh")
            global
    Specifies the nroff macros that separate sections.  These are pairs of
    two letters (See |object-motions|).  The default makes a section start
    at the nroff macros ".SH", ".NH", ".H", ".HU", ".nh" and ".sh".

                        *'secure'* *'nosecure'*
'secure'        boolean    (default off)
            global
            {not in Vi}
    When on, ":autocmd", shell and write commands are not allowed in
    ".vimrc" and ".exrc" in the current directory and map commands are
    displayed.  Switch it off only if you know that you will not run into
    problems, or when the 'exrc' option is off.  On Unix this option is
    only used if the ".vimrc" or ".exrc" is not owned by you.  This can be
    dangerous if the systems allows users to do a "chown".  You better set
    'secure' at the end of your ~/.vimrc then.

                        *'selection'* *'sel'*
'selection' 'sel'    string    (default "inclusive")
            global
            {not in Vi}
    This option defines the behaviour of the selection.  It is only used
    in Visual and Select mode.
    Possible values:
       value    past line     inclusive ~
       old           no        yes
       inclusive       yes        yes
       exclusive       yes        no
    "past line" means that the cursor is allowed to be positioned one
    character past the line.
    "inclusive" means that the last character of the selection is included
    in an operation.  For example, when "x" is used to delete the
    selection.

    The 'selection' option is set by the |:behave| command.

                        *'selectmode'* *'slm'*
'selectmode' 'slm'    string    (default "")
            global
            {not in Vi}
    This is a comma separated list of words, which specifies when to start
    Select mode instead of Visual mode, when a selection is started.
    Possible values:
       mouse    when using the mouse
       key        when using shifted special keys
       cmd        when using "v", "V" or CTRL-V
    See |Select-mode|.
    The 'selectmode' option is set by the |:behave| command.

                        *'sessionoptions'* *'ssop'*
'sessionoptions' 'ssop'    string    (default "winsize,options")
            global
            {not in Vi}
    Changes the effect of the |:mksession| command.  It is a comma
    separated list of words.  Each word enables saving and restoring
    something:
       word        save and restore ~
       options    options and mappings
       winsize    window sizes (where possible)
       resize    size of the screen: 'lines' and 'columns'

                        *'shell'* *'sh'*
'shell' 'sh'        string    (default $SHELL or "sh",
                    MS-DOS and Win32: "command",
                    OS/2: "cmd")
            global
    Name of the shell to use for ! and :! commands.  When changing the
    value also check the 'shelltype', 'shellpipe' and 'shellredir'
    options.  It is allowed to give an argument to the command, e.g.
    "csh -f".  See |option-backslash| about including spaces and
    backslashes.  Environment variables are expanded |:set_env|.
    For Dos 32 bits (DJGPP), you can set the $DJSYSFLAGS environment
    variable to change the way external commands are executed.  See the
    libc.inf file of DJGPP.

                        *'shellcmdflag'* *'shcf'*
'shellcmdflag' 'shcf'    string    (default: "-c", MS-DOS and Win32, when 'shell'
                    does not contain "sh" somewhere: "/c")
            global
            {not in Vi}
    Flag passed to the shell to execute "!" and ":!" commands; e.g.,
    "bash.exe -c ls" or "command.com /c dir".  For the MS-DOS-like
    systems, the default is set according to the value of 'shell', to
    reduce the need to set this option by the user.  It's not used for
    OS/2 (EMX figures this out itself).  See |option-backslash| about
    including spaces and backslashes.  See |dos-shell|.

                        *'shellpipe'* *'sp'*
'shellpipe' 'sp'    string    (default ">", "| tee", "|& tee" or "2>&1| tee")
            global
            {not in Vi}
    String to be used to put the output of the ":make" command in the
    error file.  See also |:make_makeprg|.  See |option-backslash| about
    including spaces and backslashes.
    For the Amiga and MS-DOS the default is ">".  The output is directly
    saved in a file and not echoed to the screen.
    For Unix the default it "| tee".  The stdout of the compiler is saved
    in a file and echoed to the screen.  If the 'shell' option is "csh" or
    "tcsh" after initializations, the default becomes "|& tee".  If the
    'shell' option is "sh", "ksh", "zsh" or "bash" the default becomes
    "2>&1| tee".  This means that stderr is also included.
    The initialization of this option is done after reading the ".vimrc"
    and the other initializations, so that when the 'shell' option is set
    there, the 'shellpipe' option changes automatically, unless it was
    explicitly set before.
    When 'shellpipe' is set to an empty string, no redirection of the
    ":make" output will be done.  This is useful if you use a 'makeprg'
    that writes to 'makeef' by itself.  If you want no piping, but do
    want to include the 'makeef', set 'shellpipe' to a single space.
    Don't forget to precede the space with a backslash: ":set sp=\ ".
    In the future pipes may be used for filtering and this option will
    become obsolete (at least for Unix).

                        *'shellquote'* *'shq'*
'shellquote' 'shq'    string    (default: ""; MS-DOS and Win32, when 'shell'
                    contains "sh" somewhere: "\"")
            global
            {not in Vi}
    Quoting character(s), put around the command passed to the shell, for
    the "!" and ":!" commands.  The redirection is kept outside of the
    quoting.  See 'shellxquote' to include the redirection.  It's
    probably not useful to set both options.
    This is an empty string by default.  Only known to be useful for
    third-party shells on MS-DOS-like systems, such as the MKS Korn Shell
    or bash, where it should be "\"".  The default is adjusted according
    the value of 'shell', to reduce the need to set this option by the
    user.  See |dos-shell|.

                        *'shellredir'* *'srr'*
'shellredir' 'srr'    string    (default ">", ">&" or ">%s 2>&1")
            global
            {not in Vi}
    String to be used to put the output of a filter command in a temporary
    file.  See also |:!|.  See |option-backslash| about including spaces
    and backslashes.
    The name of the temporary file can be represented by "%s" if necessary
    (the file name is appended automatically if no %s appears in the value
    of this option).
    The default is ">".  For Unix, if the 'shell' option is "csh", "tcsh"
    or "zsh" during initializations, the default becomes ">&".  If the
    'shell' option is "sh", "ksh" or "bash" the default becomes
    ">%s 2>&1".  This means that stderr is also included.
    The initialization of this option is done after reading the ".vimrc"
    and the other initializations, so that when the 'shell' option is set
    there, the 'shellredir' option changes automatically unless it was
    explicitly set before.
    In the future pipes may be used for filtering and this option will
    become obsolete (at least for Unix).

                        *'shelltype'* *'st'*
'shelltype' 'st'    number    (default 0)
            global
            {not in Vi}
    On the Amiga this option influences the way how the commands work
    which use a shell.
    0 and 1: always use the shell
    2 and 3: use the shell only to filter lines
    4 and 5: use shell only for ':sh' command
    When not using the shell, the command is executed directly.

    0 and 2: use "shell 'shellcmdflag' cmd" to start external commands
    1 and 3: use "shell cmd" to start external commands

                        *'shellxquote'* *'sxq'*
'shellxquote' 'sxq'    string    (default: "";
                    for Win32, when 'shell' contains "sh"
                    somewhere: "\""
                    for Unix, when using system(): "\"")
            global
            {not in Vi}
    Quoting character(s), put around the command passed to the shell, for
    the "!" and ":!" commands.  Includes the redirection.  See
    'shellxquote' to exclude the redirection.  It's probably not useful
    to set both options.
    This is an empty string by default.  Known to be useful for
    third-party shells when using the Win32 version, such as the MKS Korn
    Shell or bash, where it should be "\"".  The default is adjusted
    according the value of 'shell', to reduce the need to set this option
    by the user.  See |dos-shell|.

                   *'shiftround'* *'sr'* *'noshiftround'* *'nosr'*
'shiftround' 'sr'    boolean    (default off)
            global
            {not in Vi}
    Round indent to multiple of 'shiftwidth'.  Applies to > and <
    commands.  CTRL-T and CTRL-D in Insert mode always round the indent to
    a multiple of 'shiftwidth' (this is vi compatible).

                        *'shiftwidth'* *'sw'*
'shiftwidth' 'sw'    number    (default 8)
            local to buffer
    Number of spaces to use for each step of (auto)indent.

                        *'shortmess'* *'shm'*
'shortmess' 'shm'    string    (default "")
            global
            {not in Vi}
    This option helps to avoid all the |hit-return| prompts caused by file
    messages, for example  with CTRL-G, and to avoid some other messages.
    It is a list of flags:
     flag    meaning when present    ~
      f    use "(3 of 5)" instead of "(file 3 of 5)"
      i    use "[noeol]" instead of "[Incomplete last line]"
      l    use "999L, 888C" instead of "999 lines, 888 characters"
      m    use "[+]" instead of "[Modified]"
      n    use "[New]" instead of "[New File]"
      r    use "[RO]" instead of "[readonly]"
      w    use "[w]" instead of "written" for file write message.
      x    use "[dos]" instead of "[dos format]", "[unix]" instead of
        "[unix format]" and "[mac]" instead of "[mac format]".
      a    all of the above abbreviations

      o    overwrite message for writing a file with subsequent message
        for reading a file (useful for ":wn" or when 'autowrite' on)
      O    message for reading a file overwrites any previous message.
        usually only set temporarily in scripts.
      s    don't give "search hit BOTTOM, continuing at TOP" or "search
        hit TOP, continuing at BOTTOM" messages
      t    truncate file message at the start if it is too long to fit
        on the command-line, "<" will appear in the left most column.
      W    don't give "written" or "[w]" when writing a file
      A    don't give the "ATTENTION" message when an existing swap file
        is found.
      I    don't give the intro message when starting Vim |:intro|.

    This gives you the opportunity to avoid that a change between buffers
    requires you to hit return, but still gives as useful a message as
    possible for the space available.  To get the whole message that you
    would have got with 'shm' empty, use ":file!"
    Useful values:
        shm=    No abbreviation of message.
        shm=a    Abbreviation, but no loss of information.
        shm=at    Abbreviation, and truncate message when necessary.

                 *'shortname'* *'sn'* *'noshortname'* *'nosn'*
'shortname' 'sn'    boolean    (default off)
            local to buffer
            {not in Vi, not in MS-DOS versions}
    Filenames are assumed to be 8 characters plus one extension of 3
    characters.  Multiple dots in file names are not allowed.  When this
    option is on, dots in file names are replaced with underscores when
    adding an extension (".~" or ".swp").  This option is not available
    for MS-DOS, because then it would always be on.  This option is useful
    when editing files on an MS-DOS compatible filesystem, e.g., messydos
    or crossdos.  When running the Win32 GUI version under Win32s, this
    option is always on by default.

                        *'showbreak'* *'sbr'*
'showbreak' 'sbr'    string    (default "")
            global
            {not in Vi}
    String to put at the start of lines that have been wrapped.  Useful
    values are "> " or "+++ ".  Only printable characters are allowed,
    excluding <Tab> and comma (in a future version the comma might be used
    to separate the part that is shown at the end and at the start of a
    line).  The characters are highlighted according to the '@' flag in
    'highlight'.

                     *'showcmd'* *'sc'* *'noshowcmd'* *'nosc'*
'showcmd' 'sc'        boolean    (Vim default: on, off for Unix, Vi default:
                 off)
            global
            {not in Vi}
            {not available when compiled without the  |+showcmd|
            feature}
    Show (partial) command in status line.  Set this option off if your
    terminal is slow.

                        *'showfulltag'* *'sft'*
'showfulltag' 'sft'    boolean (default off)
            global
            {not in Vi}
    When completing a word in insert mode (see |ins-completion|) from the
    tags file, show both the tag name and a tidied-up form of the search
    pattern (if there is one) as possible matches.  Thus, if you have
    matched a C function, you can see a template for what arguments are
    required (coding style permitting).

                 *'showmatch'* *'sm'* *'noshowmatch'* *'nosm'*
'showmatch' 'sm'    boolean    (default off)
            global
    When a bracket is inserted, briefly jump to the matching one.  The
    jump is only done if the match can be seen on the screen.  The time to
    show the match can be set with 'matchtime'.
    A Beep is given if there is no match (no matter if the match can be
    seen or not).  This option is reset when the 'paste' option is set.
    When the 'm' flag is not included in 'cpoptions', typing a character
    will immediately move the cursor back to where it belongs.
    See the "sm" field in 'guicursor' for setting the cursor shape and
    blinking when showing the match.

                 *'showmode'* *'smd'* *'noshowmode'* *'nosmd'*
'showmode' 'smd'    boolean    (Vim default: on, Vi default: off)
            global
    If in Insert, Replace or Visual mode put a message on the last line.
    Use the 'M' flag in 'highlight' to set the type of highlighting for
    this message.

                        *'sidescroll'* *'ss'*
'sidescroll' 'ss'    number    (default 0)
            global
            {not in Vi}
    The minimal number of columns to scroll horizontally.  Used only when
    the 'wrap' option is off and the cursor is moved off of the screen.
    When it is zero the cursor will be put in the middle of the screen.
    When using a slow terminal set it to a large number or 0.  When using
    a fast terminal use a small number or 1.  Not used for "zh" and "zl"
    commands.

                   *'smartcase'* *'scs'* *'nosmartcase'* *'noscs'*
'smartcase' 'scs'    boolean    (default off)
            global
            {not in Vi}
    Override the 'ignorecase' option if the search pattern contains upper
    case characters.  Only used when the search pattern is typed and
    'ignorecase' option is on.  Used for the commands "/", "?", "n", "N",
    ":g" and ":s".  Not used for "*", "#", "gd", tag search, etc..

                 *'smartindent'* *'si'* *'nosmartindent'* *'nosi'*
'smartindent' 'si'    boolean    (default off)
            local to buffer
            {not in Vi}
            {not available when compiled without the
            |+smartindent| feature}
    Do smart autoindenting when starting a new line.  Works for C-like
    programs, but can also be used for other languages.  'cindent' does
    something like this, works better in most cases, but is more strict,
    see |C-indenting|.  When 'cindent' is on, setting 'si' has no effect.
    Normally 'autoindent' should also be on when using 'smartindent'.
    An indent is automatically inserted:
    - After a line ending in '{'.
    - After a line starting with a keyword from 'cinwords'.
    - Before a line starting with '}' (only with the "O" command).
    When typing '}' as the first character in a new line, that line is
    given the same indent as the matching '{'.
    When typing '#' as the first character in a new line, the indent for
    that line is removed, the '#' is put in the first column.  The indent
    is restored for the next line.  If you don't want this, use this
    mapping: ":inoremap # X^H#", where ^H is entered with CTRL-V CTRL-H.
    When using the ">>" command, lines starting with '#' are not shifted
    right.
    'smartindent' is reset when the 'paste' option is set.

                 *'smarttab'* *'sta'* *'nosmarttab'* *'nosta'*
'smarttab' 'sta'    boolean    (default off)
            global
            {not in Vi}
    When on, a <Tab> in front of a line inserts blanks according to
    'shiftwidth'.  'tabstop' is used in other places.
    When off a <Tab> always inserts blanks according to 'tabstop'.
    'shiftwidth' is only used for shifting text left or right
    |shift-left-right|.
    What gets inserted (a Tab or spaces) depends on the 'expandtab'
    option.  Also see |ins-expandtab|.

                    *'softtabstop'* *'sts'*
'softtabstop' 'sts'    number    (default 0)
            local to buffer
            {not in Vi}
    Number of spaces that a <Tab> counts for while performing editing
    operations, like inserting a <Tab> or using <BS>.  It "feels" like
    <Tab>s are being inserted, while in fact a mix of spaces and <Tab>s is
    used.  This is useful to keep the 'ts' setting at its standard value
    of 8, while being able to edit like it is set to 'sts'.  However,
    commands like "x" still work on the actual characters.
    When 'sts' is zero, this feature is off.
    'softtabstop' is set to 0 when the 'paste' option is set.
    See also |ins-expandtab|.

                   *'splitbelow'* *'sb'* *'nosplitbelow'* *'nosb'*
'splitbelow' 'sb'    boolean    (default off)
            global
            {not in Vi}
    When on, spliting a window will put the new window below the current
    one.

               *'startofline'* *'sol'* *'nostartofline'* *'nosol'*
'startofline' 'sol'    boolean    (default on)
            global
            {not in Vi}
    When on the commands listed below move the cursor to the first
    blank of the line.  When off the cursor is kept in the same column
    (if possible).  This applies to the commands: CTRL-D, CTRL-U, CTRL-B,
    CTRL-F, "G", "H", "M", "L", , and to the commands "d", "<<" and ">>"
    with a linewise operator, with "%" with a count and to buffer changing
    commands (CTRL-^, :bnext, :bNext, etc.).  In case of buffer changing
    commands the cursor is placed at the column where it was the last time
    the buffer was edited.  This option is set when the 'compatible'
    option is set.

                        *'suffixes'* *'su'*
'suffixes' 'su'        string    (default ".bak,~,.o,.h,.info,.swp")
            global
            {not in Vi}
    Files with these suffixes get a lower priority when multiple files
    match a wildcard.  See |suffixes|.  Commas can be used to separate the
    suffixes.  Spaces after the comma are ignored.  A dot is also seen as
    the start of a suffix.  To include a dot or comma in a suffix, precede
    it with a backslash (see |option-backslash| about including spaces and
    backslashes).
    See 'wildignore' for completely ignoring files.
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    suffixes from the list.  This avoids problems when a future version
    uses another default.

                *'swapfile'* *'swf'* *'noswapfile'* *'noswf'*
'swapfile' 'swf'    boolean (default on)
            local to buffer
            {not in Vi}
    Use a swapfile for the buffer.  This option can be reset when a
    swapfile is not wanted for a specific buffer.  For example, with
    confidential information that even root must not be able to access.
    Careful: All text will be in memory.  Don't use this for big files.
    Recovery will be impossible!
    A swapfile will only be present when |'updatecount'| is non-zero and
    'swapfile' is set.
    When 'swapfile' is reset, the swap file for the current buffer is
    immediately deleted.  When 'swapfile' is set, and 'updatecount' is
    non-zero, a swap file is immediately created.

                        *'swapsync'* *'sws'*
'swapsync' 'sws'    string    (default "fsync")
            global
            {not in Vi}
    When this option is not empty a swap file is synced to disk after
    writing to it.  This takes some time, especially on busy unix systems.
    When this option is empty parts of the swap file may be in memory and
    not written to disk.  When the system crashes you may lose more work.
    On Unix the system does a sync now and then without Vim asking for it,
    so the disadvantage of setting this option off is small.  On some
    systems the swap file will not be written at all.  For a unix system
    setting it to "sync" will use the sync() call instead of the default
    fsync(), which may work better on some systems.

                        *'syntax'* *'syn'*
'syntax' 'syn'        string  (default emtpy)
            local to buffer
            {not in Vi}
            {only available when compiled with the |+syntax|
            feature}
    When this option is set, the syntax with this name is loaded.
    Otherwise this option does not always reflect the current syntax (the
    b:current_syntax variable does).
    This option is most useful in a modeline, for a file which syntax is
    not automatically recognized.  Example, for in an IDL file:
>        /* vim: set syntax=idl : */

                    *'tabstop'* *'ts'*
'tabstop' 'ts'        number    (default 8)
            local to buffer
    Number of spaces that a <Tab> in the file counts for.  Also see
    |:retab| command, and 'softtabstop' option.

            *'tagbsearch'* *'tbs'* *'notagbsearch'* *'notbs'*
'tagbsearch' 'tbs'    boolean    (default on)
            global
            {not in Vi}
    When searching for a tag (e.g., for the |:ta| command), Vim can either
    use a binary search or a linear search in a tags file.  Binary
    searching makes searching for a tag a LOT faster, but a linear search
    will find more tags if the tags file wasn't properly sorted.
    Vim normally assumes that your tags files are sorted, or indicate that
    they are not sorted.  Only when this is not the case does the
    'tagbsearch' option need to be switched off.

    When 'tagbsearch' is on, binary searching is first used in the tags
    files.  In certain situations, Vim will do a linear search instead for
    certain files, or retry all files with a linear search.  When
    'tagbsearch' is off, only a linear search is done.

    Linear searching is done anyway, for one file, when Vim finds a line
    at the start of the file indicating that it's not sorted:
>  !_TAG_FILE_SORTED    0    /some command/
    [The whitespace before and after the '0' must be a single <Tab>]

    When a binary search was done and no match was found in any of the
    files listed in 'tags', and 'ignorecase' is set or a pattern is used
    instead of a normal tag name, a retry is done with a linear search.
    Tags in unsorted tags files, and matches with different case will only
    be found in the retry.

    When 'tagbsearch' is off, tags searching is slower when a full match
    exists, but faster when no full match exists.  Tags in unsorted tags
    files may only be found with 'tagbsearch' off.
    When the tags file is not sorted, or sorted in a wrong way (not on
    ASCII byte value), 'tagbsearch' should be off, or the line given above
    must be included in the tags file.
    This option doesn't affect commands that find all matching tags (e.g.,
    command-line completion and ":help").
    {Vi: always uses binary search in some versions}

                        *'taglength'* *'tl'*
'taglength' 'tl'    number    (default 0)
            global
    If non-zero, tags are significant up to this number of characters.

            *'tagrelative'* *'tr'* *'notagrelative'* *'notr'*
'tagrelative' 'tr'    boolean    (Vim default: on, Vi default: off)
            global
            {not in Vi}
    If on and using a tag file in another directory, file names in that
    tag file are relative to the directory where the tag file is.  When
    the 'compatible' option is set, this option is reset.

                        *'tags'* *'tag'*
'tags' 'tag'        string    (default "./tags,tags", when compiled with
                |+emacs_tags|: "./tags,./TAGS,tags,TAGS")
            global
    Filenames for the tag command, separated by spaces or commas.  To
    include a space or comma in a file name, precede it with a backslash
    (see |option-backslash| about including spaces and backslashes).
    When a file name starts with "./", the '.' is replaced with the path
    of the current file.  But only when the 'd' flag is not included in
    'cpoptions'.  Environment variables are expanded |:set_env|.  Also see
    |tags-option|.
    If Vim was compiled with the |+emacs_tags| feature, Emacs-style tag
    files are also supported.  They are automatically recognized.  The
    default value becomes "./tags,./TAGS,tags,TAGS".  |emacs-tags|
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    file names from the list.  This avoids problems when a future version
    uses another default.
    {Vi: default is "tags /usr/lib/tags"}

                        *'term'*
'term'            string    (default is $TERM, if that fails:
                      in the GUI: "builtin_gui"
                    on Amiga: "amiga"
                     on BeOS: "beos-ansi"
                      on Mac: "mac-ansi"
                     on MiNT: "vt52"
                       on MS-DOS: "pcterm"
                     on OS/2: "os2ansi"
                     on Unix: "ansi"
                      on VMS: "ansi"
                       on Win 32: "win32")
            global
    Name of the terminal.  Used for choosing the terminal control
    characters.  Environment variables are expanded |:set_env|.
    For example:
>        :set term=$TERM
    See |termcap|.

                        *'terse'* *'noterse'*
'terse'            boolean    (default off)
            global
            {not in Vi}
    When set: Add 's' flag to 'shortmess' option (this makes the message
    for a search that hits the start or end of the file not being
    displayed).  When reset: Remove 's' flag from 'shortmess' option.  {Vi
    shortens a lot of messages}

                   *'textauto'* *'ta'* *'notextauto'* *'nota'*
'textauto' 'ta'        boolean    (Vim default: on, Vi default: off)
            global
            {not in Vi}
    This option is obsolete.  Use 'fileformats'.
    For backwards compatibility, when 'textauto' is set, 'fileformats' is
    set to the default value for the current system.  When 'textauto' is
    reset, 'fileformats' is made empty.

                   *'textmode'* *'tx'* *'notextmode'* *'notx'*
'textmode' 'tx'        boolean    (MS-DOS, Win32 and OS/2: default on,
                 others: default off)
            local to buffer
            {not in Vi}
    This option is obsolete.  Use 'fileformat'.
    For backwards compatibility, when 'textmode' is set, 'fileformat' is
    set to "dos".  When 'textmode' is reset, 'fileformat' is set to
    "unix".

                        *'textwidth'* *'tw'*
'textwidth' 'tw'    number    (default 0)
            local to buffer
            {not in Vi}
    Maximum width of text that is being inserted.  A longer line will be
    broken after white space to get this width.  A zero value disables
    this.  'textwidth' is set to 0 when the 'paste' option is set.  When
    'textwidth' is zero, 'wrapmargin' may be used.  See also
    'formatoptions' and |ins-textwidth|.

                 *'tildeop'* *'top'* *'notildeop'* *'notop'*
'tildeop' 'top'        boolean    (default off)
            global
            {not in Vi}
    When on: The tilde command "~" behaves like an operator.

                *'timeout'* *'to'* *'notimeout'* *'noto'*
'timeout' 'to'        boolean (default on)
            global
                        *'ttimeout'* *'nottimeout'*
'ttimeout'        boolean (default off)
            global
            {not in Vi}
    These two options together determine the behaviour when part of a
    mapped key sequence or keyboard code has been received:

    timeout        ttimeout    action    ~
    off        off        no time out
    on        on or off    time out on :mappings and key codes
    off        on        time out on key codes

    If there is no time out, Vim will wait until either the complete
    mapping or key sequence has been received, or it is clear that there
    is no mapping or key sequence for the received characters.  For
    example: if you have mapped "vl" and Vim has received 'v', the next
    character is needed to see if the 'v' is followed by an 'l'.  With a
    time out Vim will wait for about 1 second for the next character to
    arrive.  After that the already received characters are interpreted
    as single characters.  The waiting time can be changed with the
    'timeoutlen' option.
    On slow terminals or very busy systems time out may cause
    malfunctioning cursor keys.  If both options are off, Vim waits
    forever after an entered <Esc> if there are key codes that start
    with <Esc>.  You will have to type <Esc> twice.  If you do not have
    problems with key codes, but would like to have :mapped key
    sequences not time out in 1 second, set the ttimeout option and
    reset the timeout option.

                        *'timeoutlen'* *'tm'*
'timeoutlen' 'tm'    number    (default 1000)
            global
            {not in all versions of Vi}
                        *'ttimeoutlen'* *'ttm'*
'ttimeoutlen' 'ttm'    number    (default -1)
            global
            {not in Vi}
    The time in milliseconds that is waited for a key code or mapped key
    sequence to complete.  Normally only 'timeoutlen' is used and
    'ttimeoutlen' is -1.  When a different timeout value for key codes is
    desired set 'ttimeoutlen' to a non-negative number.

        ttimeoutlen    mapping delay       key code delay    ~
           < 0        'timeoutlen'       'timeoutlen'
          >= 0        'timeoutlen'       'ttimeoutlen'

    The timeout only happens when the 'timeout' and 'ttimeout' options
    tell so.  A useful setting would be
        :set timeout timeoutlen=3000 ttimeoutlen=100
    (time out on mapping after three seconds, time out on key codes after
    a tenth of a second).

                        *'title'* *'notitle'*
'title'            boolean    (default off, on when title can be restored)
            global
            {not in Vi}
    When on the title of the window will be set to "VIM - filename",
    where filename is the name of the file currently being edited.  Only
    works if the terminal supports setting window titles (currently Amiga
    console, Unix xterm and iris-ansi).  Overridden by the 'titlestring'
    option.
                                *X11*
    When Vim was compiled with HAVE_X11 defined, the original title will
    be restored if possible.  The output of ":version" will include "+X11"
    when HAVE_X11 was defined, otherwise it will be "-X11".  This also
    works for the icon name |'icon'|.
    If the title cannot be restored, it is set to "Thanks for flying Vim".
    You will have to restore the title outside of Vim then.  When using an
    xterm from a remote machine you can use this command:
        rsh machine_name xterm -display $DISPLAY &
    then the WINDOWID environment variable should be inherited and the
    title of the window should change back to what it should be after
    exiting Vim (rather than using the "Thanks..." message).

                                *'titlelen'*
'titlelen'        number    (default 85)
            global
            {not in Vi}
    Gives the percentage of 'columns' to use for the length of the window
    title.  When the title is longer, only the end of the path name is
    shown.  A '>' character is used to indicate this.  Using a percentage
    makes this adapt to the width of the window.  But it won't work
    perfectly, because the actual number of characters available also
    depends on the font used and other things in the title bar.  When
    'titlelen' is zero the full path is used.  Otherwise, values from 1 to
    30000 can be used.  'titlelen' is not used for the 'titlestring'
    option.

                        *'titlestring'*
'titlestring'        string    (default "")
            global
            {not in Vi}
    When this options is not empty, it will be used for the title of the
    window.  This happens regardless of the 'title' or 'titlelen' option.
    Only works if the terminal supports setting window titles (currently
    only GUI, Unix xterm and iris-ansi).  When Vim was compiled with
    HAVE_X11 defined, the original title will be restored if possible
    |X11|.  Example:
>   auto BufEnter * let &titlestring = hostname() . "/" . expand("%:p")

                 *'ttybuiltin'* *'tbi'* *'nottybuiltin'* *'notbi'*
'ttybuiltin' 'tbi'    boolean    (default on)
            global
            {not in Vi}
    When on, the builtin termcaps are searched before the external ones.
    When off the builtin termcaps are searched after the external ones.
    When this option is changed, you should set the 'term' option next for
    the change to take effect, for example:
>        :set notbi term=$TERM
    See also |termcap|.

                     *'ttyfast'* *'tf'* *'nottyfast'* *'notf'*
'ttyfast' 'tf'        boolean    (default off, on when 'term' is xterm, hpterm,
                    sun-cmd, scren, dtterm or iris-ansi)
            global
            {not in Vi}
    Indicates a fast terminal connection.  More characters will be sent to
    the screen for redrawing, instead of using insert/delete line
    commands.  Improves smoothness of redrawing when there are multiple
    windows and the terminal does not support a scrolling region.
    Also enables the extra writing of characters at the end of each screen
    line for lines that wrap.  This helps when using copy/paste with the
    mouse in an xterm and other terminals.

                        *'ttymouse'* *'ttym'*
'ttymouse' 'ttym'    string    (default depends on 'term')
            global
            {not in Vi}
            {only in Unix, and not in the GUI}
    Name of the terminal type for which mouse codes are to be recognized.
    Currently these three strings are valid:
       xterm    xterm-like mouse handling.  The mouse generates
            "<Esc>[Mscr", where "scr" is three bytes:
                "s"  = button state
                "c"  = column plus 33
                "r"  = row plus 33
       dec        DEC terminal mouse handling.  The mouse generates
            "<Esc>}r,c<CR>", where "r,c" are two decimal numbers
            for the row and column.
       netterm    NetTerm mouse handling.  The mouse generates a rather
            complex sequence, starting with "<Esc>[".
    The mouse handling must be enabled at compile time |+mouse_xterm|
    |+mouse_dec| |+mouse_netterm|.
    Only "xterm" is really recognized.  DEC mouse codes are always
    recognized, when enabled at compile time.  NetTerm mouse codes are
    recognized when enabled at compile time, and 'ttymouse' is not
    "xterm".
    This option is automatically set to "xterm", when the 'term' option is
    set to a name that starts with "xterm".  The main use of this option
    is to set it to "xterm", when the terminal name doesn't start with
    "xterm", but it can handle xterm mouse codes.

                        *'ttyscroll'* *'tsl'*
'ttyscroll' 'tsl'    number    (default 999)
            global
    Maximum number of lines to scroll the screen.  If there are more lines
    to scroll the window is redrawn.  For terminals where scrolling is
    very slow and redrawing is not slow this can be set to a small number,
    e.g., 3, to speed up displaying.

                        *'ttytype'* *'tty'*
'ttytype'    'tty'        string    (default from $TERM)
            global
    Alias for 'term', see above.

                        *'undolevels'* *'ul'*
'undolevels' 'ul'        number    (default 100, 1000 for Unix and OS/2)
            global
            {not in Vi}
    Maximum number of changes that can be undone.  Set to 0 for Vi
    compatibility: one level of undo and "u" undoes itself.  But you can
    also get Vi compatibility by including the 'u' flag in 'cpoptions',
    and still be able to use CTRL-R to repeat undo.  Set to a negative
    number for no undo at all (saves memory).  Also see |undo-two-ways|.

                        *'updatecount'* *'uc'*
'updatecount' 'uc'    number    (default: 200)
            global
            {not in Vi}
    After typing this many characters the swap file will be written to
    disk.  When zero, no swap file will be created at all (see chapter on
    recovery |crash-recovery|).  'updatecount' is set to zero by starting
    Vim with the "-n" option, see |startup|.  When editing in readonly
    mode this option will be initialized to 10000.
    The swapfile can be disabled per buffer with |'swapfile'|.
    When 'updatecount' is set from non-zero to zero, swap files are
    created for all buffers that have 'swapfile' set.  When 'updatecount'
    is set to zero, existing swap files are not deleted.
    Also see |'swapsync'|.

                        *'updatetime'* *'ut'*
'updatetime' 'ut'    number    (default 4000)
            global
            {not in Vi}
    If this many milliseconds nothing is typed the swap file will be
    written to disk (see |crash-recovery|).

                        *'verbose'* *'vbs'*
'verbose' 'vbs'        number    (default 0)
            global
            {not in Vi}
    When bigger than zero, Vim will give messages about what it is doing.
    Currently, these messages are given:
    >= 1    When a file is ":source"'ed.
    >= 1    When the viminfo file is read or written.
    >= 8    Files for which a group of autocommands is executed.
    >= 9    Every executed autocommand.
    >=15    Every executed function line.

    This option can also be set with the "-V" argument.  See |-V|.

                        *'viminfo'* *'vi'*

'viminfo' 'vi'        string    (default "")
            global
            {not in Vi}
            {not available when compiled without the  |+viminfo|
            feature}
    When non-empty, the viminfo file is read upon startup and written
    when exiting Vim (see |viminfo-file|).  The string should be a comma
    separated list of parameters, each consisting of a single character
    identifying the particular parameter, followed by a number or string
    which specifies the value of that parameter.  If a particular
    character is left out, then the default value is used for that
    parameter.  The following is a list of the identifying characters and
    the effect of their value.
    CHAR    VALUE    ~
    '    Maximum number of previously edited files for which the marks
        are remembered.  This parameter must always be included when
        'viminfo' is non-empty.
    f    Whether file marks need to be stored.  If zero, file marks ('0
        to '9, 'A to 'Z) are not stored.  When not present or when
        non-zero, they are all stored.  '0 is used for the current
        cursor position (when exiting or when doing ":wviminfo").
    r    Removable media.  The argument is a string (up to the next
        ',').  This parameter can be given several times.  Each
        specifies the start of a path for which no marks will be
        stored.  This is to avoid removable media.  For MS-DOS you
        could use "ra:,rb:", for Amiga "rdf0:,rdf1:,rdf2:".  Case is
        ignored.  Maximum length of each 'r' argument is 50
        characters.
    "    Maximum number of lines saved for each register.  If zero then
        registers are not saved.  When not included, all lines are
        saved.  Dont forget to put a backslash before the ", otherwise
        it will be recognized as the start of a comment!
    :    Maximum number of items in the command-line history to be
        saved.  When not included, the value of 'history' is used.
    /    Maximum number of items in the search pattern history to be
        saved.  If non-zero, then the previous search and substitute
        patterns are also saved.  When not included, the value of
        'history' is used.
    @    Maximum number of items in the input-line history to be
        saved.  When not included, the value of 'history' is used.
    n    Name of the viminfo file.  The name must immediately follow
        the 'n'.  Must be the last one!  If the "-i" argument was
        given when starting Vim, that file name overrides the one
        given here with 'viminfo'.  Environment variables are expanded
        when opening the file, not when setting the option.
    %    When included, save and restore the buffer list.  If Vim is
        started with a file name argument, the buffer list is not
        restored.  If Vim is started without a file name argument, the
        buffer list is restored from the viminfo file.  Buffers
        without a file name and buffers for help files are not written
        to the viminfo file.

    Example:
>        :set viminfo='50,\"1000,:0,n~/vim/viminfo

    '50        Marks will be remembered for the last 50 files you
            edited.
    "1000        Contents of registers (up to 1000 lines each) will be
            remembered.
    :0        Command-line history will not be saved.
    n~/vim/viminfo    The name of the file to use is "~/vim/viminfo".
    no /        Since '/' is not specified, the default will be used,
            that is, save all of the search history, and also the
            previous search and substitute patterns.
    no %        The buffer list will not be saved nor read back.

            *'visualbell'* *'vb'* *'novisualbell'* *'novb'* *beep*
'visualbell' 'vb'    boolean    (default off)
            global
            {not in Vi}
    Use visual bell instead of beeping.  The terminal code to display the
    visual bell is given with 't_vb'.  When no beep of flash is wanted,
    use ":set vb t_vb=".  Does not work on the Amiga, you always get a
    screen flash.  Also see 'errorbells'.

                        *'warn'* *'nowarn'*
'warn'            boolean    (default on)
            global
    Give a warning message when a shell command is used while the buffer
    has been changed.

             *'weirdinvert'* *'wiv'* *'noweirdinvert'* *'nowiv'*
'weirdinvert' 'wiv'    boolean    (default off)
            global
            {not in Vi}
    This option has the same effect as the 't_xs' termcap option.
    It is provided for backwards compatibility with version 4.x.
    Setting 'weirdinvert' has the effect of making 't_xs' non-empty, and
    vise versa.  Has no effect when the GUI is running.

                        *'whichwrap'* *'ww'*
'whichwrap' 'ww'    string    (Vim default: "b,s", Vi default: "")
            global
            {not in Vi}
    Allow specified keys that move the cursor left/right to wrap to the
    previous/next line when the cursor is on the first/last character in
    the line.  Concatenate characters to allow this for these keys:
        char   key      mode    ~
         b    <BS>     Normal and Visual
         s    <Space>     Normal and Visual
         h    "h"     Normal and Visual
         l    "l"     Normal and Visual
         <    <Left>     Normal and Visual
         >    <Right>     Normal and Visual
         [    <Left>     Insert and Replace
         ]    <Right>     Insert and Replace
    For example:
>        :set ww=<,>,[,]
    allows wrap only when cursor keys are used.
    When the movement keys are used in combination with a delete or change
    operator, the <EOL> also counts for a character.  This makes "3h"
    different from "3dh" when the cursor crosses the end of a line.  This
    is also true for "x" and "X", because they do the same as "dl" and
    "dh".  If you use this, you may also want to use the mapping
    ":map <BS> X" to make backspace delete the character in front of the
    cursor.
    When 'l' is included, you get a side effect: "yl" on an empty line
    will include the <EOL>, so that "p" will insert a new line.
    When 'compatible' is set, 'whichwrap' is set to "".

                        *'wildchar'* *'wc'*
'wildchar' 'wc'        number    (Vim default: <Tab>, Vi default: CTRL-E)
            global
            {not in Vi}
    Character you have to type to start wildcard expansion in the
    command-line.  CTRL-E is used when the 'compatible' option is set.
    The character is not recognized when used inside a macro.  Although
    'wc' is a number option, you can set it to a special key:
>        :set wc=<Esc>

                        *'wildignore'* *'wig'*
'wildignore' 'wig'    string    (default "")
            global
            {not in Vi}
            {not available when compiled without the |+wildignore|
            feature}
    A list of file patterns.  A file that matches with one of these
    patterns is ignored when completing file or directory names.
    The pattern is used like with |:autocmd|, see |autocmd-patterns|.
    Also see 'suffixes'.
    Example:
>        :set wildignore=*.o,*.obj
    The use of |:set+=| and |:set-=| is preferred when adding or removing
    a pattern from the list.  This avoids problems when a future version
    uses another default.

                        *'wildmode'* *'wim'*
'wildmode' 'wim'    string    (Vim default: "")
            global
            {not in Vi}
    Completion mode that is used for the character specified with
    'wildchar'.  It is a comma separated list of up to four parts.  Each
    part specifies what to do for each consecutive use of 'wildchar.  The
    first part specifies the behaviour for the first use of 'wildchar',
    The second part for the second use, etc.
    These are the possible values for each part:
    ""        Complete only the first match.
    "full"        Complete the next full match.  After the last match,
            the original string is used and then the first match
            again.
    "longest"    Complete till longest common string.  If this doesn't
            result in a longer string, use the next part.
    "list"        When more than one match, list all matches.
    "list:full"    When more than one match, list all matches and
            complete first match.
    "list:longest"    When more than one match, list all matches and
            complete till longest common string.
    When there is only a single match, it is fully completed in all cases.

    Examples:
>  set wildmode=full
    Complete first full match, next match, etc. (the default)
>  set wildmode=longest,full
    Complete longest common string, then each full match.
>  set list:full
    List all matches and complete each full match.
>  set list,full
    List all matches without completing, then each full match.
>  set longest,list
    Complete longest common string, then list alternatives.

                        *'winaltkeys'* *'wak'*
'winaltkeys' 'wak'    string    (default "menu")
            global
            {not in Vi}
            {only used in Win32 and Motif GUI}
    Some GUI versions allow the access to menu entries by using the ALT
    key in combination with a character that appears underlined in the
    menu.  This conflicts with the use of the ALT key for mappings and
    entering special characters.  This option tells what to do:
      no    Don't use ALT keys for menus.  ALT key combinations can be
        mapped, but there is no automatic handling.  This can then be
        done with the |:simalt| command.
      yes    ALT key handling is done by the windowing system.  ALT key
        combinations cannot be mapped.
      menu    Using ALT in combination with a character that is a menu
        shortcut key, will be handled by the windowsing system.  Other
        keys can be mapped.

                        *'winheight'* *'wh'*
'winheight' 'wh'    number    (default 1)
            global
            {not in Vi}
    Minimal number of lines for the current window.  This is not a hard
    minimum, Vim will use less lines if there is not enough room.  If the
    current window is smaller, its size is increased, at the cost of the
    height of other windows.  Set it to 999 to make the current window
    always fill the screen.  Set it to a small number for normal editing.
    The height is not adjusted after one of the commands to change the
    height of the current window.
    'winheight' applies to the current window.  Use 'winminheight' to set
    the minimal height for other windows.

                        *'winminheight'* *'wmh'*
'winminheight' 'wmh'    number    (default 1)
            global
            {not in Vi}
    The minimal height of a window, when it's not the current window.
    This is a hard minimum, windows will never become smaller.
    When set to zero, windows may be "squashed" to zero lines (i.e. just a
    status bar) if necessary.  They will return to at least one line when
    they become active (since the cursor has to have somewhere to go.)
    Use 'winheight' to set the minimal height of the current window.
    This option is only checked when making a window smaller.  Don't use a
    large number, it will cause errors when opening more than a few
    windows.  A value of 0 to 3 is reasonable.

                        *'wrap'* *'nowrap'*
'wrap'            boolean    (default on)
            local to window
            {not in Vi}
    When on, lines longer than the width of the window will wrap and
    displaying continues on the next line.  When off lines will not wrap
    and only part of long lines will be displayed.  When the cursor is
    moved to a part that is not shown, the screen will scroll horizontally
    (also see 'sidescroll' and 'listchars' options and |wrap-off|).  If
    you want to break long lines, see 'textwidth'.

                        *'wrapmargin'* *'wm'*
'wrapmargin' 'wm'    number    (default 0)
            local to buffer
    Number of characters from the right window border where wrapping
    starts.  When typing text beyond this limit, an <EOL> will be inserted
    and inserting continues on the next line.  When 'textwidth' is
    non-zero, this option is not used.  See also 'formatoptions' and
    |ins-textwidth|.  {Vi: works differently and less useful}

                   *'wrapscan'* *'ws'* *'nowrapscan'* *'nows'*
'wrapscan' 'ws'        boolean    (default on)
            global
    Searches wrap around the end of the file.

                   *'writeany'* *'wa'* *'nowriteany'* *'nowa'*
'writeany' 'wa'        boolean    (default off)
            global
    Allows writing to any file with no need for "!" override.

                 *'writebackup'* *'wb'* *'nowritebackup'* *'nowb'*
'writebackup' 'wb'    boolean    (default on with |+writebackup| feature, off
                    otherwise)
            global
            {not in Vi}
    Make a backup before overwriting a file.  The backup is removed after
    the file was successfully written, unless the 'backup' option is
    also on.  Reset this option if your file system is almost full.  See
    |backup-table| for another explanation.

                        *'writedelay'* *'wd'*
'writedelay' 'wd'    number    (default 0)
            global
            {not in Vi}
    The number of microseconds to wait for each character sent to the
    screen.  When non-zero, characters are sent to the terminal one by
    one.  For MS-DOS pcterm this does not work.  For debugging purposes.

 vim:tw=78:ts=8:sw=8: