doc: rewrite *feature-list*

runtime/doc/change.txt

@@ -939,8 +939,6 @@ This replaces each 'E' character with a euro sign.  Read more in |<Char->|.
 			this (that's a good habit anyway).
 			`:retab!` may also change a sequence of spaces by
 			<Tab> characters, which can mess up a printf().
-			Not available when |+ex_extra| feature was disabled at
-			compile time.
 
 							*retab-example*
 Example for using autocommands and ":retab" to edit a file which is stored
@@ -1291,21 +1289,15 @@ The next three commands always work on whole lines.
 :[range]ce[nter] [width]				*:ce* *:center*
 			Center lines in [range] between [width] columns
 			(default 'textwidth' or 80 when 'textwidth' is 0).
-			Not available when |+ex_extra| feature was disabled at
-			compile time.
 
 :[range]ri[ght] [width]					*:ri* *:right*
 			Right-align lines in [range] at [width] columns
 			(default 'textwidth' or 80 when 'textwidth' is 0).
-			Not available when |+ex_extra| feature was disabled at
-			compile time.
 
 							*:le* *:left*
 :[range]le[ft] [indent]
 			Left-align lines in [range].  Sets the indent in the
 			lines to [indent] (default 0).
-			Not available when |+ex_extra| feature was disabled at
-			compile time.
 
 							*gq*
 gq{motion}		Format the lines that {motion} moves over.

runtime/doc/cmdline.txt

@@ -789,7 +789,6 @@ function |expand()|.
 	#<n	(where n is a number > 0) is replaced with old	  *:_#<* *c_#<*
 		file name n.  See |:oldfiles| or |v:oldfiles| to get the
 		number.							*E809*
-		{only when compiled with the |+eval| and |+shada| features}
 
 Note that these, except "#<n", give the file name as it was typed.  If an
 absolute path is needed (when using the file name from a different directory),
@@ -858,8 +857,6 @@ Note: these are typed literally, they are not special keys!
      *%:8* *%:p* *%:.* *%:~* *%:h* *%:t* *%:r* *%:e* *%:s* *%:gs* *%:S*
 The file name modifiers can be used after "%", "#", "#n", "<cfile>", "<sfile>",
 "<afile>" or "<abuf>".  They are also used with the |fnamemodify()| function.
-These are not available when Vim has been compiled without the |+modify_fname|
-feature.
 These modifiers can be given, in this order:
 	:p	Make file name a full path.  Must be the first modifier.  Also
 		changes "~/" (and "~user/" for Unix) to the path for the home

runtime/doc/develop.txt

@@ -123,7 +123,7 @@ autoload/provider/python.vim script; the provider#python#Call function is only
 defined if a valid external Python host is found. That works well with the
 `has('python')` expression (normally used by Python plugins) because if the
 Python host isn't installed then the plugin will "think" it is running in
-a Vim compiled without the |+python| feature.
+a Vim compiled without the "+python" feature.
 
 DOCUMENTATION						*dev-doc*
 

runtime/doc/digraph.txt

@@ -32,9 +32,6 @@ An alternative is using the 'keymap' option.
 			first character, it has a special meaning in the
 			future.
 
-Vim is normally compiled with the |+digraphs| feature.  If the feature is
-disabled, the ":digraph" command will display an error message.
-
 Example of the output of ":digraphs": >
  TH Þ  222  ss ß  223  a! à  224  a' á  225  a> â  226  a? ã  227  a: ä  228
 
@@ -53,19 +50,6 @@ conversion to be available, it might fail.  For the NUL character you will see
 "10".  That's because NUL characters are internally represented with a NL
 character.  When you write the file it will become a NUL character.
 
-When Vim was compiled without the |+multi_byte| feature, you need to specify
-the character in the encoding given with 'encoding'.  You might want to use
-something like this: >
-
-	if has("multi_byte")
-		digraph oe 339
-	elseif &encoding == "iso-8859-15"
-		digraph oe 189
-	endif
-
-This defines the "oe" digraph for a character that is number 339 in Unicode
-and 189 in latin9 (iso-8859-15).
-
 ==============================================================================
 2. Using digraphs					*digraphs-use*
 
@@ -155,8 +139,7 @@ a standard meaning:
 Example: a: is ä  and o: is ö
 
 These are the RFC1345 digraphs for the one-byte characters.  See the output of
-":digraphs" for the others.  The characters above 255 are only available when
+":digraphs" for the others.
-Vim was compiled with the |+multi_byte| feature.
 
 EURO
 

runtime/doc/editing.txt

@@ -1170,9 +1170,8 @@ If you want to always use ":confirm", set the 'confirm' option.
 			and |:qall| if 'confirm' is set.
 			{only in Win32 GUI}
 			When ":browse" is not possible you get an error
-			message.  If the |+browse| feature is missing or the
+			message.  If {command} doesn't support browsing, the
-			{command} doesn't support browsing, the {command} is
+			{command} is executed without a dialog.
-			executed without a dialog.
 			":browse set" works like |:options|.
 			See also |:oldfiles| for ":browse oldfiles".
 
@@ -1460,8 +1459,6 @@ problem goes away the next day.
 ==============================================================================
 11. File Searching					*file-searching*
 
-{not available when compiled without the |+path_extra| feature}
-
 The file searching is currently used for the 'path', 'cdpath' and 'tags'
 options, for |finddir()| and |findfile()|.  Other commands use |wildcards|
 which is slightly different.

runtime/doc/eval.txt

@@ -8,10 +8,6 @@ Expression evaluation			*expression* *expr* *E15* *eval*
 
 Using expressions is introduced in chapter 41 of the user manual |usr_41.txt|.
 
-Note: Expression evaluation can be disabled at compile time.  If this has been
-done, the features in this document are not available.	See |+eval| and
-|no-eval-feature|.
-
 				      Type |gO| to see the table of contents.
 
 ==============================================================================
@@ -22,8 +18,6 @@ done, the features in this document are not available.	See |+eval| and
 There are six types of variables:
 
 Number		A 32 or 64 bit signed number.  |expr-number| *Number*
-		64-bit Number is available only when compiled with the
-		|+num64| feature.
 		Examples:  -123  0x10  0177  0b1011
 
 Float		A floating point number. |floating-point-format| *Float*
@@ -1307,8 +1301,7 @@ is deleted when the window is closed.
 
 						*tabpage-variable* *t:var* *t:*
 A variable name that is preceded with "t:" is local to the current tab page,
-It is deleted when the tab page is closed. {not available when compiled
+It is deleted when the tab page is closed.
-without the |+windows| feature}
 
 						*global-variable* *g:var* *g:*
 Inside functions global variables are accessed with "g:".  Omitting this will
@@ -1745,7 +1738,6 @@ v:oldfiles	List of file names that is loaded from the |shada| file on
 		The List can be modified, but this has no effect on what is
 		stored in the |shada| file later.  If you use values other
 		than String this will cause trouble.
-		{only when compiled with the |+shada| feature}
 
 						    *v:option_new*
 v:option_new    New value of the option. Valid while executing an |OptionSet|
@@ -1896,7 +1888,6 @@ v:termresponse	The escape sequence returned by the terminal for the DA
 		is the terminal type: 0 for vt100 and 1 for vt220.  Pv is the
 		patch level (since this was introduced in patch 95, it's
 		always 95 or bigger).  Pc is always zero.
-		{only when compiled with |+termresponse| feature}
 
 					*v:testing* *testing-variable*
 v:testing	Must be set before using `test_garbagecollect_now()`.
@@ -3673,8 +3664,6 @@ finddir({name} [, {path} [, {count}]])				*finddir()*
 		{name} in {path} instead of the first one.
 		When {count} is negative return all the matches in a |List|.
 		This is quite similar to the ex-command |:find|.
-		{only available when compiled with the |+file_in_path|
-		feature}
 
 findfile({name} [, {path} [, {count}]])				*findfile()*
 		Just like |finddir()|, but find a file instead of a directory.
@@ -3795,7 +3784,6 @@ foldtext()	Returns a String, to be displayed for a closed fold.  This is
 		When used to draw the actual foldtext, the rest of the line
 		will be filled with the fold char from the 'fillchars'
 		setting.
-		{not available when compiled without the |+folding| feature}
 
 foldtextresult({lnum})					*foldtextresult()*
 		Returns the text that is displayed for the closed fold at line
@@ -3805,7 +3793,6 @@ foldtextresult({lnum})					*foldtextresult()*
 		{lnum} is used like with |getline()|.  Thus "." is the current
 		line, "'m" mark m, etc.
 		Useful when exporting folded text, e.g., to HTML.
-		{not available when compiled without the |+folding| feature}
 
 							*foreground()*
 foreground()	Move the Vim window to the foreground.	Useful when sent from
@@ -4683,10 +4670,49 @@ globpath({path}, {expr} [, {nosuf} [, {list} [, {allinks}]]])
 		supported, thus using 'path' will not always work properly.
 
 							*has()*
-has({feature})	The result is a Number, which is 1 if the feature {feature} is
+has({feature})	Returns 1 if {feature} is supported, 0 otherwise.  The
-		supported, zero otherwise.  The {feature} argument is a
+		{feature} argument is a feature name like "nvim-0.2.1" or
-		string.  See |feature-list| below.
+		"win32", see below.  See also |exists()|.
-		Also see |exists()|.
+
+		Vim's compile-time feature names (prefixed with "+") are not
+		supported because Nvim is always compiled with ALL possible
+		features. |feature-compile| 
+
+		Feature names can be:
+		1.  Nvim version. For example the "nvim-0.2.1" feature means
+		    that Nvim is version 0.2.1 or later: >
+			:if has("nvim-0.2.1")
+
+<		2.  Runtime condition or other pseudo-feature. For example the
+		    "win32" feature checks if the current system is Windows: >
+			:if has("win32")
+<							*feature-list*
+		    List of supported pseudo-feature names:
+		        acl		|ACL| support
+		        iconv		Can use |iconv()| for conversion.
+		        +shellslash	Can use backslashes in filenames (Windows)
+			clipboard	|clipboard| provider is available.
+			nvim		This is Nvim.
+			python2		Legacy Vim |python2| interface. |has-python|
+			python3		Legacy Vim |python3| interface. |has-python|
+			pythonx		Legacy Vim |python_x| interface. |has-pythonx|
+			ttyin		input is a terminal (tty)
+			ttyout		output is a terminal (tty)
+			unix		Unix system.
+			*vim_starting*	True during |startup|. 
+			win32		Windows system (32 or 64 bit).
+			wsl		WSL (Windows Subsystem for Linux) system
+
+							*has-patch*
+		3.  Vim patches.  The "patch123" feature means that Vim patch
+		    123 has been included.  This does not check the Vim
+		    version, you could check |v:version| for that.
+		    Example: >
+			:if v:version > 602 || v:version == 602 && has("patch148")
+
+<		5.  Vim version. For example the "patch-7.4.237" feature means
+		    that the Vim version is 7.4.237 or later. >
+			:if has("patch-7.4.237")
 
 
 has_key({dict}, {key})					*has_key()*
@@ -8514,154 +8540,6 @@ xor({expr}, {expr})					*xor()*
 <
 
 
-							*feature-list*
-There are four types of features:
-1.  Features that are only supported when they have been enabled when Vim
-    was compiled |+feature-list|.  Example: >
-	:if has("cindent")
-2.  Features that are only supported when certain conditions have been met.
-    Example: >
-	:if has("win32")
-<							*has-patch*
-3.  Nvim version. The "nvim-0.2.1" feature means that the Nvim version is
-    0.2.1 or later. Example: >
-	:if has("nvim-0.2.1")
-<
-4.  Included patches.  The "patch123" feature means that patch 123 has been
-    included.  Note that this form does not check the version of Vim, you need
-    to inspect |v:version| for that.
-    Example (checking version 6.2.148 or later): >
-	:if v:version > 602 || v:version == 602 && has("patch148")
-<    Note that it's possible for patch 147 to be omitted even though 148 is
-    included.
-
-5.  Beyond a certain version or at a certain version and including a specific
-    patch.  The "patch-7.4.237" feature means that the Vim version is 7.5 or
-    later, or it is version 7.4 and patch 237 was included.
-    Note that this only works for patch 7.4.237 and later, before that you
-    need to use the example above that checks v:version.  Example: >
-	:if has("patch-7.4.248")
-<    Note that it's possible for patch 147 to be omitted even though 148 is
-    included.
-
-Hint: To find out if Vim supports backslashes in a file name (MS-Windows),
-use: `if exists('+shellslash')`
-
-
-acl			Compiled with |ACL| support.
-arabic			Compiled with Arabic support |Arabic|.
-autocmd			Compiled with autocommand support. |autocommand|
-browse			Compiled with |:browse| support, and browse() will
-			work.
-browsefilter		Compiled with support for |browsefilter|.
-byte_offset		Compiled with support for 'o' in 'statusline'
-cindent			Compiled with 'cindent' support.
-clipboard		Compiled with 'clipboard' support.
-cmdline_compl		Compiled with |cmdline-completion| support.
-cmdline_hist		Compiled with |cmdline-history| support.
-cmdline_info		Compiled with 'showcmd' and 'ruler' support.
-comments		Compiled with |'comments'| support.
-cscope			Compiled with |cscope| support.
-debug			Compiled with "DEBUG" defined.
-dialog_con		Compiled with console dialog support.
-digraphs		Compiled with support for digraphs.
-eval			Compiled with expression evaluation support.  Always
-			true, of course!
-ex_extra		|+ex_extra|, always true now
-extra_search		Compiled with support for |'incsearch'| and
-			|'hlsearch'|
-file_in_path		Compiled with support for |gf| and |<cfile>|
-filterpipe		When 'shelltemp' is off pipes are used for shell
-			read/write/filter commands
-find_in_path		Compiled with support for include file searches
-			|+find_in_path|.
-float			Compiled with support for |Float|.
-fname_case		Case in file names matters (for Windows this is not
-			present).
-folding			Compiled with |folding| support.
-gettext			Compiled with message translation |multi-lang|
-iconv			Can use iconv() for conversion.
-insert_expand		Compiled with support for CTRL-X expansion commands in
-			Insert mode.
-jumplist		Compiled with |jumplist| support.
-keymap			Compiled with 'keymap' support.
-lambda			Compiled with |lambda| support.
-langmap			Compiled with 'langmap' support.
-libcall			Compiled with |libcall()| support.
-linebreak		Compiled with 'linebreak', 'breakat', 'showbreak' and
-			'breakindent' support.
-lispindent		Compiled with support for lisp indenting.
-listcmds		Compiled with commands for the buffer list |:files|
-			and the argument list |arglist|.
-localmap		Compiled with local mappings and abbr. |:map-local|
-mac			macOS version of Nvim.
-menu			Compiled with support for |:menu|.
-mksession		Compiled with support for |:mksession|.
-modify_fname		Compiled with file name modifiers. |filename-modifiers|
-mouse			Compiled with support mouse.
-mouseshape		Compiled with support for 'mouseshape'.
-multi_byte		Compiled with support for 'encoding'
-multi_byte_encoding	'encoding' is set to a multi-byte encoding.
-multi_lang		Compiled with support for multiple languages.
-num64			Compiled with 64-bit |Number| support.
-nvim			This is Nvim. |has-patch|
-path_extra		Compiled with up/downwards search in 'path' and 'tags'
-persistent_undo		Compiled with support for persistent undo history.
-postscript		Compiled with PostScript file printing.
-printer			Compiled with |:hardcopy| support.
-profile			Compiled with |:profile| support.
-python			Legacy Vim Python 2.x API is available. |has-python|
-python3			Legacy Vim Python 3.x API is available. |has-python|
-pythonx			Compiled with |python_x| interface. |has-pythonx|
-quickfix		Compiled with |quickfix| support.
-reltime			Compiled with |reltime()| support.
-rightleft		Compiled with 'rightleft' support.
-scrollbind		Compiled with 'scrollbind' support.
-shada			Compiled with shada support.
-showcmd			Compiled with 'showcmd' support.
-signs			Compiled with |:sign| support.
-smartindent		Compiled with 'smartindent' support.
-spell			Compiled with spell checking support |spell|.
-startuptime		Compiled with |--startuptime| support.
-statusline		Compiled with support for 'statusline', 'rulerformat'
-			and special formats of 'titlestring' and 'iconstring'.
-syntax			Compiled with syntax highlighting support |syntax|.
-syntax_items		There are active syntax highlighting items for the
-			current buffer.
-tablineat		'tabline' option accepts %@Func@ items.
-tag_binary		Compiled with binary searching in tags files
-			|tag-binary-search|.
-tag_old_static		Compiled with support for old static tags
-			|tag-old-static|.
-tag_any_white		Compiled with support for any white characters in tags
-			files |tag-any-white|.
-termresponse		Compiled with support for t_RV and |v:termresponse|.
-textobjects		Compiled with support for |text-objects|.
-timers			Compiled with |timer_start()| support.
-title			Compiled with window title support |'title'|.
-ttyin			input is a terminal (tty)
-ttyout			output is a terminal (tty)
-unix			Unix version of Vim.
-unnamedplus		Compiled with support for "unnamedplus" in 'clipboard'
-user_commands		User-defined commands.
-vertsplit		Compiled with vertically split windows |:vsplit|.
-vim_starting		True while initial source'ing takes place. |startup|
-			*vim_starting*
-virtualedit		Compiled with 'virtualedit' option.
-visual			Compiled with Visual mode.
-visualextra		Compiled with extra Visual mode commands.
-			|blockwise-operators|.
-vreplace		Compiled with |gR| and |gr| commands.
-vtp			Compiled for vcon support |+vtp| (check vcon to find
-			out if it works in the current console)).
-wildignore		Compiled with 'wildignore' option.
-wildmenu		Compiled with 'wildmenu' option.
-win32			Windows version of Vim (32 or 64 bit).
-winaltkeys		Compiled with 'winaltkeys' option.
-windows			Compiled with support for more than one window.
-writebackup		Compiled with 'writebackup' default on.
-wsl			WSL (Windows Subsystem for Linux) version of Vim.
-
 							*string-match*
 Matching a pattern in a String
 

runtime/doc/various.txt

@@ -286,130 +286,12 @@ g8			Print the hex values of the bytes used in the
 :!!			Repeat last ":!{cmd}".
 
 							*:ve* *:version*
-:ve[rsion]		Print the version number of the editor.  The following
+:ve[rsion]		Print editor version and build information.
-			lines contain information about which features were
+			See also |feature-compile|.
-			enabled when Vim was compiled.  When there is a
-			preceding '+', the feature is included, when there is
-			a '-' it is excluded.  To change this, you have to
-			edit feature.h and recompile Vim.  To check for this
-			in an expression, see |has()|.  Here is an overview of
-			the features.  The first column shows the smallest
-			version in which they are included:
-			   T	tiny
-			   S	small
-			   N	normal
-			   B	big
-			   H	huge
-			   m	manually enabled or depends on other features
-			 (none) system dependent
-			Thus if a feature is marked with "N", it is included
-			in the normal, big and huge versions of Vim.
 
-							*+feature-list*
+:ve[rsion] {nr}		Ignored.  Previously used to check the version number
-   *+acl*		|ACL| support included
+			of a .vimrc file.  You can now use the ":if" command
-B  *+arabic*		|Arabic| language support
+			for version-dependent behavior.
-N  *+autocmd*		|:autocmd|, automatic commands
-N  *+browse*		|:browse| command
-N  *+byte_offset*	support for 'o' flag in 'statusline' option, "go"
-			and ":goto" commands.
-N  *+cindent*		|'cindent'|, C indenting
-N  *+clientserver*	Unix and Win32: Remote invocation |clientserver|
-   *+clipboard*		|clipboard| support
-N  *+cmdline_compl*	command line completion |cmdline-completion|
-S  *+cmdline_hist*	command line history |cmdline-history|
-N  *+cmdline_info*	|'showcmd'| and |'ruler'|
-N  *+comments*		|'comments'| support
-B  *+conceal*		"conceal" support, see |conceal| |:syn-conceal| etc.
-B  *+cscope*		|cscope| support
-m  *+cursorbind*	|'cursorbind'| support
-m  *+debug*		Compiled for debugging.
-N  *+dialog_gui*	Support for |:confirm| with GUI dialog.
-N  *+dialog_con*	Support for |:confirm| with console dialog.
-N  *+dialog_con_gui*	Support for |:confirm| with GUI and console dialog.
-N  *+digraphs*		|digraphs| *E196*
-N  *+eval*		expression evaluation |eval.txt|
-N  *+ex_extra*		always on now, used to be for Vim's extra Ex commands
-N  *+extra_search*	|'hlsearch'| and |'incsearch'| options.
-N  *+file_in_path*	|gf|, |CTRL-W_f| and |<cfile>|
-N  *+find_in_path*	include file searches: |[I|, |:isearch|,
-			|CTRL-W_CTRL-I|, |:checkpath|, etc.
-N  *+folding*		|folding|
-N  *+gettext*		message translations |multi-lang|
-   *+iconv*		Compiled with the |iconv()| function
-   *+iconv/dyn*		Likewise |iconv-dynamic| |/dyn|
-N  *+insert_expand*	|insert_expand| Insert mode completion
-S  *+jumplist*		|jumplist|
-B  *+keymap*		|'keymap'|
-N  *+lambda*		|lambda| and |closure|
-B  *+langmap*		|'langmap'|
-N  *+libcall*		|libcall()|
-N  *+linebreak*		|'linebreak'|, |'breakat'| and |'showbreak'|
-N  *+lispindent*	|'lisp'|
-N  *+listcmds*		Vim commands for the list of buffers |buffer-hidden|
-			and argument list |:argdelete|
-N  *+localmap*		Support for mappings local to a buffer |:map-local|
-N  *+menu*		|:menu|
-N  *+mksession*		|:mksession|
-N  *+modify_fname*	|filename-modifiers|
-N  *+mouse*		Mouse handling |mouse-using|
-N  *+mouseshape*	|'mouseshape'|
-N  *+multi_byte*	16 and 32 bit characters |multibyte|
-   *+multi_byte_ime*	Win32 input method for multibyte chars |multibyte-ime|
-N  *+multi_lang*	non-English language support |multi-lang|
-   *+num64*		64-bit Number support |Number|
-N  *+path_extra*	Up/downwards search in 'path' and 'tags'
-N  *+persistent_undo*	Persistent undo |undo-persistence|
-   *+postscript*	|:hardcopy| writes a PostScript file
-N  *+printer*		|:hardcopy| command
-H  *+profile*		|:profile| command
-m  *+python*		Python 2 interface |python|
-m  *+python3*		Python 3 interface |python|
-N  *+quickfix*		|:make| and |quickfix| commands
-N  *+reltime*		|reltime()| function, 'hlsearch'/'incsearch' timeout,
-			'redrawtime' option
-B  *+rightleft*		Right to left typing |'rightleft'|
-N  *+scrollbind*	|'scrollbind'|
-N  *+shada*		|'shada'|
-B  *+signs*		|:sign|
-N  *+smartindent*	|'smartindent'|
-N  *+startuptime*	|--startuptime| argument
-N  *+statusline*	Options 'statusline', 'rulerformat' and special
-			formats of 'titlestring' and 'iconstring'
-N  *+syntax*		Syntax highlighting |syntax|
-N  *+tablineat*		'tabline' option recognizing %@Func@ items.
-T  *+tag_binary*	binary searching in tags file |tag-binary-search|
-N  *+tag_old_static*	old method for static tags |tag-old-static|
-m  *+tag_any_white*	any white space allowed in tags file |tag-any-white|
-B  *+termguicolors*	24-bit color in xterm-compatible terminals support
-N  *+termresponse*	support for t_RV and |v:termresponse|
-N  *+textobjects*	|text-objects| selection
-N  *+timers*		the |timer_start()| function
-N  *+title*		Setting the window 'title' and 'icon'
-N  *+toolbar*		|gui-toolbar|
-N  *+user_commands*	User-defined commands. |user-commands|
-   *+vertsplit*		Vertically split windows |:vsplit|
-N  *+virtualedit*	|'virtualedit'|
-S  *+visual*		Visual mode |Visual-mode| Always enabled since 7.4.200.
-N  *+visualextra*	extra Visual mode commands |blockwise-operators|
-N  *+vreplace*		|gR| and |gr|
-   *+vtp*		on MS-Windows console: support for 'termguicolors'
-N  *+wildignore*	|'wildignore'|
-N  *+wildmenu*		|'wildmenu'|
-   *+windows*		more than one window
-m  *+writebackup*	|'writebackup'| is default on
-m  *+xim*		X input method |xim|
-   *+xfontset*		X fontset support |xfontset|
-   *+xpm*		pixmap support
-
-							*/dyn* *E370* *E448*
-			To some of the features "/dyn" is added when the
-			feature is only available when the related library can
-			be dynamically loaded.
-
-:ve[rsion] {nr}		Is now ignored.  This was previously used to check the
-			version number of a .vimrc file.  It was removed,
-			because you can now use the ":if" command for
-			version-dependent behavior.
 
 							*:redi* *:redir*
 :redi[r][!] > {file}	Redirect messages to file {file}.  The messages which