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Update runtime files.

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This commit is contained in:
Bram Moolenaar
2010-12-10 20:35:50 +01:00
parent 7c5676b5d6
commit 81af9250a7
26 changed files with 400 additions and 228 deletions
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30
runtime/doc/cmdline.txt
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@@ -1,4 +1,4 @@
*cmdline.txt* For Vim version 7.3. Last change: 2010 Sep 18
*cmdline.txt* For Vim version 7.3. Last change: 2010 Nov 28
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -372,10 +372,10 @@ word before the cursor. This is available for:
- Mappings: Only after a ":map" or similar command.
- Variable and function names: Only after a ":if", ":call" or similar command.
When Vim was compiled with the |+cmdline_compl| feature disabled, only file
names, directories and help items can be completed. The number of help item
matches is limited (currently to 300) to avoid a long delay when there are
very many matches.
When Vim was compiled without the |+cmdline_compl| feature only file names,
directories and help items can be completed. The number of help item matches
is limited (currently to 300) to avoid a long delay when there are very many
matches.
These are the commands that can be used:
@@ -782,30 +782,34 @@ it, no matter how many backslashes.
*:<cword>* *:<cWORD>* *:<cfile>* *<cfile>*
*:<sfile>* *<sfile>* *:<afile>* *<afile>*
*:<abuf>* *<abuf>* *:<amatch>* *<amatch>*
*E495* *E496* *E497* *E498* *E499* *E500*
*E495* *E496* *E497* *E499* *E500*
Note: these are typed literally, they are not special keys!
<cword> is replaced with the word under the cursor (like |star|)
<cWORD> is replaced with the WORD under the cursor (see |WORD|)
<cfile> is replaced with the path name under the cursor (like what
|gf| uses)
<afile> when executing autocommands, is replaced with the file name
for a file read or write
<abuf> when executing autocommands, is replaced with the currently
<afile> When executing autocommands, is replaced with the file name
for a file read or write.
<abuf> When executing autocommands, is replaced with the currently
effective buffer number (for ":r file" and ":so file" it is
the current buffer, the file being read/sourced is not in a
buffer).
<amatch> when executing autocommands, is replaced with the match for
<amatch> When executing autocommands, is replaced with the match for
which this autocommand was executed. It differs from
<afile> only when the file name isn't used to match with
(for FileType, Syntax and SpellFileMissing events).
<sfile> when executing a ":source" command, is replaced with the
file name of the sourced file;
when executing a function, is replaced with
<sfile> When executing a ":source" command, is replaced with the
file name of the sourced file. *E498*
When executing a function, is replaced with
"function {function-name}"; function call nesting is
indicated like this:
"function {function-name1}..{function-name2}". Note that
filename-modifiers are useless when <sfile> is used inside
a function.
<slnum> When executing a ":source" command, is replaced with the
line number. *E842*
When executing a function it's the line number relative to
the start of the function.
*filename-modifiers*
*:_%:* *::8* *::p* *::.* *::~* *::h* *::t* *::r* *::e* *::s* *::gs*

4
runtime/doc/diff.txt
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@@ -1,4 +1,4 @@
*diff.txt* For Vim version 7.3. Last change: 2010 Nov 03
*diff.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -375,7 +375,7 @@ to see more messages.
The self-installing Vim for MS-Windows includes a diff program. If you don't
have it you might want to download a diff.exe. For example from
http://jlb.twu.net/code/unixkit.php.
http://gnuwin32.sourceforge.net/packages/diffutils.htm.
USING PATCHES *diff-patchexpr*

4
runtime/doc/editing.txt
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@@ -1,4 +1,4 @@
*editing.txt* For Vim version 7.3. Last change: 2010 Sep 18
*editing.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1340,7 +1340,7 @@ Vim is able to write files encrypted, and read them back. The encrypted text
cannot be read without the right key.
{only available when compiled with the |+cryptv| feature} *E833*
The text in the swap file and the undo file is also encrypted.
The text in the swap file and the undo file is also encrypted. *E843*
Note: The text in memory is not encrypted. A system administrator may be able
to see your text while you are editing it. When filtering text with

10
runtime/doc/eval.txt
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@@ -1,4 +1,4 @@
*eval.txt* For Vim version 7.3. Last change: 2010 Nov 13
*eval.txt* For Vim version 7.3. Last change: 2010 Dec 01
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -2720,7 +2720,7 @@ exp({expr}) *exp()*
expand({expr} [, {flag}]) *expand()*
Expand wildcards and the following special keywords in {expr}.
The result is a String.
The result is a String. 'wildignorecase' applies.
When there are several matches, they are separated by <NL>
characters. [Note: in version 5.0 a space was used, which
@@ -2741,6 +2741,7 @@ expand({expr} [, {flag}]) *expand()*
<abuf> autocmd buffer number (as a String!)
<amatch> autocmd matched name
<sfile> sourced script file name
<slnum> sourced script file line number
<cword> word under the cursor
<cWORD> WORD under the cursor
<client> the {clientid} of the last received
@@ -3434,6 +3435,7 @@ glob({expr} [, {flag}]) *glob()*
the 'suffixes' and 'wildignore' options apply: Names matching
one of the patterns in 'wildignore' will be skipped and
'suffixes' affect the ordering of matches.
'wildignorecase' always applies.
If the expansion fails, the result is an empty string.
A name for a non-existing file is not included.
@@ -5454,8 +5456,8 @@ stridx({haystack}, {needle} [, {start}]) *stridx()*
{haystack} of the first occurrence of the String {needle}.
If {start} is specified, the search starts at index {start}.
This can be used to find a second match: >
:let comma1 = stridx(line, ",")
:let comma2 = stridx(line, ",", comma1 + 1)
:let colon1 = stridx(line, ":")
:let colon2 = stridx(line, ":", colon1 + 1)
< The search is done case-sensitive.
For pattern searches use |match()|.
-1 is returned if the {needle} does not occur in {haystack}.

3
runtime/doc/indent.txt
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@@ -1,4 +1,4 @@
*indent.txt* For Vim version 7.3. Last change: 2010 Jul 30
*indent.txt* For Vim version 7.3. Last change: 2010 Nov 27
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -258,6 +258,7 @@ assume a 'shiftwidth' of 4.
<
bN If N != 0 Vim will align a final "break" with the case label,
so that case..break looks like a sort of block. (default: 0).
When using 1, consider adding "0=break" to 'cinkeys'.
cino= cino=b1 >
switch (x) switch(x)

5
runtime/doc/intro.txt
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@@ -1,4 +1,4 @@
*intro.txt* For Vim version 7.3. Last change: 2010 Nov 03
*intro.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -616,7 +616,6 @@ Replace <Esc> -- -- <Insert> -- --
Command-line *3 -- -- :start -- --
Ex :vi -- -- -- -- --
- NA
-- not possible
*1 Go from Normal mode to Insert mode by giving the command "i", "I", "a",
@@ -730,7 +729,7 @@ window.
When the "lastline" flag is present in the 'display' option, you will not see
'@' characters at the left side of window. If the last line doesn't fit
completely, only the part that fits is shown, and the last three characters of
the last line are replaced with "@@@", like this: >
the last line are replaced with "@@@", like this:
+-----------------------+
|first line |

14
runtime/doc/options.txt
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@@ -1,4 +1,4 @@
*options.txt* For Vim version 7.3. Last change: 2010 Nov 16
*options.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1439,7 +1439,7 @@ A jump table for the options with a short description can be found at |Q_op|.
all operations except yank. Yank shall copy the text
into register '+' and also into '*' when "unnamed" is
included.
Only available with the |+x11| feature.
Only available with the |+X11| feature.
Availability can be checked with: >
if has('unnamedplus')
<
@@ -2861,6 +2861,9 @@ A jump table for the options with a short description can be found at |Q_op|.
file only, the option is not changed.
When 'binary' is set, the value of 'fileformats' is not used.
Note that when Vim starts up with an empty buffer this option is not
use. Set 'fileformat' in your .vimrc instead.
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:
@@ -3218,7 +3221,8 @@ A jump table for the options with a short description can be found at |Q_op|.
the internal format mechanism.
The expression may be evaluated in the |sandbox|, see
|sandbox-option|.
|sandbox-option|. That stops the option from working, since changing
the buffer text is not allowed.
*'fsync'* *'fs'*
'fsync' 'fs' boolean (default on)
@@ -6241,7 +6245,7 @@ A jump table for the options with a short description can be found at |Q_op|.
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 or 'smartindent' is set,
see |C-indenting|. When 'cindent' is on or 'indentexpr' is set,
setting 'si' has no effect. 'indentexpr' is a more advanced
alternative.
Normally 'autoindent' should also be on when using 'smartindent'.
@@ -7762,7 +7766,7 @@ A jump table for the options with a short description can be found at |Q_op|.
uses another default.
*'wildignorecase* *'wic'* *'nowildignorecase* *'nowic'*
*'wildignorecase'* *'wic'* *'nowildignorecase'* *'nowic'*
'wildignorecase' 'wic' boolean (default off)
global
{not in Vi}

3
runtime/doc/quickref.txt
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@@ -1,4 +1,4 @@
*quickref.txt* For Vim version 7.3. Last change: 2010 Sep 14
*quickref.txt* For Vim version 7.3. Last change: 2010 Dec 02
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -934,6 +934,7 @@ Short explanation of each option: *option-list*
'wildchar' 'wc' command-line character for wildcard expansion
'wildcharm' 'wcm' like 'wildchar' but also works when mapped
'wildignore' 'wig' files matching these patterns are not completed
'wildignorecase' 'wic' ignore case when completing file names
'wildmenu' 'wmnu' use menu for command line completion
'wildmode' 'wim' mode for 'wildchar' command-line expansion
'wildoptions' 'wop' specifies how command line completion is done

5
runtime/doc/spell.txt
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@@ -1,4 +1,4 @@
*spell.txt* For Vim version 7.3. Last change: 2010 Apr 11
*spell.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -335,6 +335,9 @@ A spell file might not be available in the current 'encoding'. See
|spell-mkspell| about how to create a spell file. Converting a spell file
with "iconv" will NOT work!
Note: on VMS ".{enc}.spl" is changed to "_{enc}.spl" to avoid trouble with
filenames.
*spell-sug-file* *E781*
If there is a file with exactly the same name as the ".spl" file but ending in
".sug", that file will be used for giving better suggestions. It isn't loaded

6
runtime/doc/syntax.txt
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@@ -1,4 +1,4 @@
*syntax.txt* For Vim version 7.3. Last change: 2010 Oct 7
*syntax.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -901,8 +901,8 @@ line to your startup file: >
DOCBOOK *docbk.vim* *ft-docbk-syntax* *docbook*
DOCBOOK XML *docbkxml.vim* *ft-docbkxml-syntax*
DOCBOOK SGML *docbksgml.vim* *ft-docbksgml-syntax*
DOCBOOK XML *docbkxml.vim* *ft-docbkxml-syntax*
DOCBOOK SGML *docbksgml.vim* *ft-docbksgml-syntax*
There are two types of DocBook files: SGML and XML. To specify what type you
are using the "b:docbk_type" variable should be set. Vim does this for you

7
runtime/doc/tags
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@@ -659,6 +659,8 @@ $VIMRUNTIME starting.txt /*$VIMRUNTIME*
'noweirdinvert' options.txt /*'noweirdinvert'*
'nowfh' options.txt /*'nowfh'*
'nowfw' options.txt /*'nowfw'*
'nowic' options.txt /*'nowic'*
'nowildignorecase' options.txt /*'nowildignorecase'*
'nowildmenu' options.txt /*'nowildmenu'*
'nowinfixheight' options.txt /*'nowinfixheight'*
'nowinfixwidth' options.txt /*'nowinfixwidth'*
@@ -1064,10 +1066,12 @@ $VIMRUNTIME starting.txt /*$VIMRUNTIME*
'wh' options.txt /*'wh'*
'whichwrap' options.txt /*'whichwrap'*
'wi' options.txt /*'wi'*
'wic' options.txt /*'wic'*
'wig' options.txt /*'wig'*
'wildchar' options.txt /*'wildchar'*
'wildcharm' options.txt /*'wildcharm'*
'wildignore' options.txt /*'wildignore'*
'wildignorecase' options.txt /*'wildignorecase'*
'wildmenu' options.txt /*'wildmenu'*
'wildmode' options.txt /*'wildmode'*
'wildoptions' options.txt /*'wildoptions'*
@@ -4219,6 +4223,9 @@ E838 netbeans.txt /*E838*
E839 insert.txt /*E839*
E84 windows.txt /*E84*
E840 insert.txt /*E840*
E841 map.txt /*E841*
E842 cmdline.txt /*E842*
E843 editing.txt /*E843*
E85 options.txt /*E85*
E86 windows.txt /*E86*
E87 windows.txt /*E87*

76
runtime/doc/todo.txt
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@@ -1,4 +1,4 @@
*todo.txt* For Vim version 7.3. Last change: 2010 Nov 16
*todo.txt* For Vim version 7.3. Last change: 2010 Dec 08
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -30,12 +30,6 @@ be worked on, but only if you sponsor Vim development. See |sponsor|.
*known-bugs*
-------------------- Known bugs and current work -----------------------
Crash when using vimgrep with an ftp file. (Christian Brabandt, 2010 Nov 5)
Crash with dragn-n-drop of file combined with netrw (Marius Gedminas, 2008 Jun
11) I can't reproduce it. It's probably caused by a handle_drop() call
in combination with autocommands that invoke a ":redraw" command.
Another valgrind output Jun 30.
'cursorline' is displayed too short when there are concealed characters and
'list' is set, 'listchars' at default value. (Dennis Preiser, 2010 Aug 15)
@@ -58,19 +52,27 @@ call append(line, "INFO ....12....18....24....30....36....42....48....54....60.
Building the MingW version without clipboard but with multi-byte doesn't
work. (Bill Lam, 2010 Sep 18)
When reading from stdin, don't enable signals before finishing reading?
Otherwise the program producing the text may get killed by SIGWINCH.
(Benjamin R. Haskell) Xavier: It's because reading from stdin returns -1.
Patch from Xavier de Gaye, 2010 Dec 7. More generic solution?
Bug: E685 error for func_unref(). (ZyX, 2010 Aug 5)
Using ":break" or something else that stops executing commands inside a
":finally" does not rethrow a previously uncaught exception. (ZyX, 2010 Oct
15)
Vim using lots of memory when joining lines. (John Little, 2010 Dec 3)
string() can't parse back "inf" and "nan". Fix documentation or fix code?
(ZyX, 2010 Aug 23)
maparg() does not show the <script> flag. How to restore the script ID?
maparg() does not show the <script> flag. When temporarily changing a
mapping, how to restore the script ID?
Patch to fix \%V item in regexp. (Christian Brabandt, 2010 Nov 8)
Not quite right.
Update Nov 19. James Vega: still not right. Christian: it's difficult.
Highlighting stops working after changing it many times. Script to reproduce
it: Pablo Contreras, 2010 Oct 12 Windows XP and 7. Font is never freed?
@@ -78,21 +80,29 @@ it: Pablo Contreras, 2010 Oct 12 Windows XP and 7. Font is never freed?
When 'cursorcolumn' is set locally to a window, ":new" opens a window with the
same highlighting but 'cursorcolumn' is empty. (Tyru, 2010 Nov 15)
In the sandbox it's not allowed to do many things, but it's possible to change
or set variables. Add a way to prevent variables from being changed in the
sandbox? E.g.: ":protect g:restore_settings".
GTK: drawing a double-width combining character over single-width characters
doesn't look right. (Dominique Pelle, 2010 Aug 8)
GTK: patch to fix hitting Enter in a dialog. (Britton Kerin, 2010 Nov 11)
GTK: tear-off menu does not work. (Kurt Sonnenmoser, 2010 Oct 25)
Version of netbeans.c for use with MacVim. (Kazuki Sakamoto, 2010 Nov 18)
7.3.014 changed how backslash at end of line works, but still get a NUL when
there is one backslash. (Ray Frush, 2010 Nov 18) What does the original ex
do?
":find" completion does not escape space in directory name. (Isz, 2010 Nov 2)
Searching mixed with Visual mode doesn't redraw properly. (James Vega, 2010 Nov
22)
Win32: When using Chinese tear-off menu doesn't work. (Weasley, 2010 Oct 31)
Patch by Alex Jakushev, 2010 Nov 2.
Using control characters in 'statusline' doesn't work well. (ZyX, 2010 Nov 1)
Patch by Caio Ariede, 2010 Nov 3
Using ":call" inside "if 0" does not see that a function returns a Dict and
gives error for "." as string concatenation. (Yasuhiro Matsumoto, 2010 Oct 20)
Patch: Oct 20.
@@ -110,6 +120,14 @@ clear why it doesn't work.
Editing a file with a ^M with 'ff' set to "mac", opening a help file, then the
^M is displayed as ^J sometimes. Getting 'ff' value from wrong window/buffer?
Since patch 7.2.46 Yankring plugin has become very slow, eventually make Vim
crash? (Raiwil, 2010 Nov 17)
Patch to disallow fork() when __APPLE__ is defined. (Hisashi T Fujinaka, 2010
Nov 25)
GTK: Patch to fix menu popping down. (Hong Xu, 2010 Dec 4, Dec 5)
Patch to add 'systemencoding', convert between 'encoding' and this for file
names, shell commands and the like. (Kikuchan, 2010 Oct 14)
Assume the system converts between the actual encoding of the filesystem to
@@ -118,7 +136,8 @@ the system encoding (usually utf-8).
Problem producing tags file when hebrew.frx is present. It has a BOM.
Results in E670. (Tony Mechelynck, 2010 May 2)
Patch to support sorting on floating point number.
Patch to support sorting on floating point number. (Alex Jakushev, 2010 Oct
30)
Ruby: ":ruby print $buffer.number" returns zero.
@@ -179,6 +198,8 @@ Patch for VisVim, pass file name to VimOpenFile. (Jiri Sedlak, 2010 Nov 12)
When 'lines' is 25 and 'scrolloff' is 12, "j" scrolls zero or two lines
instead of one. (Constantin Pan, 2010 Sep 10)
Crash in setqflist(). (Benoit Mortgat, 2010 Nov 18)
Writing nested List and Dict in viminfo gives error message and can't be read
back. (Yukihiro Nakadaira, 2010 Nov 13)
@@ -255,6 +276,8 @@ Undo problem: line not removed as expected when using setline() from Insert
mode. (Israel Chauca, 2010 May 13, more in second msg)
Break undo when CTRL-R = changes the text? Or save more lines?
Patch for static code analysis errors in riscOS. (Dominique Pelle, 2010 Dec 3)
Change to C syntax folding to make it work much faster, but a bit less
reliable. (Lech Lorens, 2009 Nov 9) Enable with an option?
Most time is spent in in_id_list().
@@ -262,6 +285,8 @@ Most time is spent in in_id_list().
Slow combination of folding and PHP syntax highlighting. Script to reproduce
it. Caused by "syntax sync fromstart" in combination with patch 7.2.274.
(Christian Brabandt, 2010 May 27)
Generally, folding with 'foldmethod' set to "syntax" is slow. Do profiling to
find out why.
When completion inserts the first match, it may trigger the line to be folded.
Disable updating folds while completion is active? (Peter Odding, 2010 Jun 9)
@@ -427,6 +452,9 @@ very high. (Yegappan Lakshmanan, 2010 Jul 22, Michael Peeters, 2010 Jul 22)
Directory wrong in session file, caused by ":lcd" in BufEnter autocommand.
(Felix Kater, 2009 Mar 3)
Session file generates error upon loading, cause bu --remote-silent-tab.
(7tommm (ytommm) 2010 Nov 24)
Using ~ works OK on 'a' with composing char, but not on 0x0418 with composing
char 0x0301. (Tony Mechelynck, 2009 Mar 4)
@@ -543,9 +571,6 @@ Patch for c.vim and cpp.vim syntax files. (Chung-chieh Shan, 2008 Nov 26)
c.vim: XXX in a comment is colored yellow, but not when it's after "#if 0".
(Ilya Dogolazky, 2009 Aug 7)
Win32: ":dis +" shows nothing, but "+p does insert text. Problem with "* and
"+ being the same thing?
You can type ":w ++bad=x fname", but the ++bad argument is ignored. Give an
error message? Or is this easy to implement? (Nathan Stratton Treadway, 2008
Aug 20) This is in ucs2bytes(), search for 0xBF. Using the ++bad argument is
@@ -582,9 +607,6 @@ When mapping : to ; and ; to :, @; doesn't work like @: and @: doesn't work
either. Matt Wozniski: nv_at() calls do_execreg() which uses
put_in_typebuf(). Char mapped twice?
8 Some file systems are case-sensitive, some are not. Turn
CASE_INSENSITIVE_FILENAME into an option, at least for completion.
Despite adding save_subexpr() this still doesn't work properly:
Regexp: matchlist('12a4aaa', '^\(.\{-}\)\(\%5c\@<=a\+\)\(.\+\)\?')
Returns ['12a4', 'aaa', '4aaa'], should be ['12a4', 'aaa', '']
@@ -640,6 +662,9 @@ try the Cocoa version.
Mac: After a ":vsplit" the left scrollbar doesn't appear until 'columns' is
changed or the window is resized.
GTK: when setting 'columns' in a startup script and doing ":vertical diffsplit"
the window isn't redrawn properly, see two vertical bars.
Mac: Patch for configure: remove arch from ruby link args. (Knezevic, 2008
Mar 5) Alternative: Kazuki Sakamoto, Mar 7.
@@ -1149,8 +1174,8 @@ doesn't work from Geoffrey Antos, 2008 May 5.
Also: the window may no longer fit on the screen, thus the command line is not
visible.
GTK: when setting 'columns' in a startup script and doing ":vertical diffsplit"
the window isn't redrawn properly, see two vertical bars.
When right after "vim file", "M" then CTRL-W v the windows are scrolled
differently and unexpectedly. Caused by patch 7.2.398?
The magic clipboard format "VimClipboard2" appears in several places. Should
be only one.
@@ -4105,6 +4130,9 @@ Buffer list:
should then mean the number of the last buffer. E.g.: "4,$bdel".
7 Add an option to mostly use slashes in file names. Separately for
internal use and for when executing an external program?
8 Some file systems are case-sensitive, some are not. Besides
'wildignorecase' there might be more parts inside
CASE_INSENSITIVE_FILENAME that are useful on Unix.
Swap (.swp) files:
@@ -4503,6 +4531,8 @@ Various improvements:
3 Make "2d%" work like "d%d%" instead of "d2%"?
7 "g CTRL-O" jumps back to last used buffer. Skip CTRL-O jumps in the same
buffer. Make jumplist remember the last ten accessed buffers?
7 Make it possible to set the size of the jumplist (also to a smaller number
than the default). (Nikolai Weibull)
- Add code to disable the CAPS key when going from Insert to Normal mode.
- Set date/protection/etc. of the patchfile the same as the original file.
- Use growarray for termcodes[] in term.c

3
runtime/doc/usr_41.txt
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@@ -1,4 +1,4 @@
*usr_41.txt* For Vim version 7.3. Last change: 2010 Oct 31
*usr_41.txt* For Vim version 7.3. Last change: 2010 Nov 17
VIM USER MANUAL - by Bram Moolenaar
@@ -794,6 +794,7 @@ Syntax and highlighting: *syntax-functions* *highlighting-functions*
synIDattr() get a specific attribute of a syntax ID
synIDtrans() get translated syntax ID
synstack() get list of syntax IDs at a specific position
synconcealed() get info about concealing
diff_hlID() get highlight ID for diff mode at a position
matchadd() define a pattern to highlight (a "match")
matcharg() get info about |:match| arguments