Update runtime files

29 files changed, 664 insertions, 162 deletions

diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index 04f019174b..a1408edefc 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 9.0.  Last change: 2023 Feb 18
+*autocmd.txt*   For Vim version 9.0.  Last change: 2023 May 20
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1017,6 +1017,9 @@ OptionSet			After setting an option.  The pattern is
 				the option. Similarly |v:option_oldglobal| is
 				only set when |:set| or |:setglobal| was used.
 
+				This does not set |<abuf>|, you could use
+				|bufnr()|.
+
 				Note that when setting a |global-local| string
 				option with |:set|, then |v:option_old| is the
 				old global value. However, for all other kinds
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 5fd401c603..b14851ca89 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.0.  Last change: 2023 May 12
+*builtin.txt*	For Vim version 9.0.  Last change: 2023 Jun 08
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1594,7 +1594,7 @@ clearmatches([{win}])					*clearmatches()*
 		Can also be used as a |method|: >
 			GetWin()->clearmatches()
 <
-col({expr} [, {winid})					*col()*
+col({expr} [, {winid}])					*col()*
 		The result is a Number, which is the byte index of the column
 		position given with {expr}.  The accepted positions are:
 		    .	    the cursor position
@@ -1657,7 +1657,7 @@ complete({startcol}, {matches})			*complete()* *E785*
 		Example: >
 	inoremap <F5> <C-R>=ListMonths()<CR>
 
-	func! ListMonths()
+	func ListMonths()
 	  call complete(col('.'), ['January', 'February', 'March',
 		\ 'April', 'May', 'June', 'July', 'August', 'September',
 		\ 'October', 'November', 'December'])
@@ -1922,7 +1922,7 @@ cursor({list})
 		This is like the return value of |getpos()| or |getcurpos()|,
 		but without the first item.
 
-		To position the cursor using the character count, use
+		To position the cursor using {col} as the character count, use
 		|setcursorcharpos()|.
 
 		Does not change the jumplist.
diff --git a/runtime/doc/cmdline.txt b/runtime/doc/cmdline.txt
index 55b1a63a04..d2e476f006 100644
--- a/runtime/doc/cmdline.txt
+++ b/runtime/doc/cmdline.txt
@@ -1,4 +1,4 @@
-*cmdline.txt*   For Vim version 9.0.  Last change: 2023 Feb 08
+*cmdline.txt*   For Vim version 9.0.  Last change: 2023 May 20
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -962,9 +962,10 @@ Note: these are typed literally, they are not special keys!
 		   write.  *E495*
 							*:<abuf>* *<abuf>*
 	<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).  *E496*
+		   effective buffer number.  It is not set for all events,
+		   also see |bufnr()|.  For ":r file" and ":so file" it is the
+		   current buffer, the file being read/sourced is not in a
+		   buffer.  *E496*
 							*:<amatch>* *<amatch>*
 	<amatch>   When executing autocommands, is replaced with the match for
 		   which this autocommand was executed.  *E497*
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index de09c7b470..7e26605f84 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 9.0.  Last change: 2023 Apr 24
+*eval.txt*	For Vim version 9.0.  Last change: 2023 Jun 01
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -3091,7 +3091,7 @@ text...
 				let mylist = [1, 2, 3]
 				lockvar 0 mylist
 				let mylist[0] = 77	" OK
-				call add(mylist, 4]	" OK
+				call add(mylist, 4)	" OK
 				let mylist = [7, 8, 9]  " Error!
 <								*E743*
 			For unlimited depth use [!] and omit [depth].
diff --git a/runtime/doc/map.txt b/runtime/doc/map.txt
index aa05029107..1dcd99bf92 100644
--- a/runtime/doc/map.txt
+++ b/runtime/doc/map.txt
@@ -1,4 +1,4 @@
-*map.txt*       For Vim version 9.0.  Last change: 2023 May 12
+*map.txt*       For Vim version 9.0.  Last change: 2023 May 28
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -400,7 +400,7 @@ Note:
 - The command is not echo'ed, no need for <silent>.
 - The {rhs} is not subject to abbreviations nor to other mappings, even if the
   mapping is recursive.
-- In Visual mode  you can use `line('v')` and `col('v')` to get one end of the
+- In Visual mode you can use `line('v')` and `col('v')` to get one end of the
   Visual area, the cursor is at the other end.
 
 							*E1255* *E1136*
diff --git a/runtime/doc/message.txt b/runtime/doc/message.txt
index ba87212abf..240f2c4326 100644
--- a/runtime/doc/message.txt
+++ b/runtime/doc/message.txt
@@ -1,4 +1,4 @@
-*message.txt*   For Vim version 9.0.  Last change: 2022 Oct 18
+*message.txt*   For Vim version 9.0.  Last change: 2023 May 24
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 05113373f4..f368de35ba 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.0.  Last change: 2023 May 04
+*options.txt*	For Vim version 9.0.  Last change: 2023 Jun 02
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1813,7 +1813,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	The screen column can be an absolute number, or a number preceded with
 	'+' or '-', which is added to or subtracted from 'textwidth'. >
 
-		:set cc=+1  " highlight column after 'textwidth'
+		:set cc=+1	  " highlight column after 'textwidth'
 		:set cc=+1,+2,+3  " highlight three columns after 'textwidth'
 		:hi ColorColumn ctermbg=lightgrey guibg=lightgrey
 <
@@ -7135,7 +7135,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 			local to buffer
 	Number of spaces to use for each step of (auto)indent.  Used for
 	|'cindent'|, |>>|, |<<|, etc.
-	When zero the 'ts' value will be used.  Use the |shiftwidth()|
+	When zero the 'tabstop' value will be used.  Use the |shiftwidth()|
 	function to get the effective shiftwidth value.
 
 						*'shortmess'* *'shm'*
@@ -7434,6 +7434,8 @@ A jump table for the options with a short description can be found at |Q_op|.
 	line in the window wraps part of it may not be visible, as if it is
 	above the window. "<<<" is displayed at the start of the first line,
 	highlighted with |hl-NonText|.
+	You may also want to add "lastline" to the 'display' option to show as
+	much of the last line as possible.
 	NOTE: only partly implemented, currently works with CTRL-E, CTRL-Y
 	and scrolling with the mouse.
 
@@ -8044,13 +8046,25 @@ A jump table for the options with a short description can be found at |Q_op|.
 	   (or 3 or whatever you prefer) and use 'noexpandtab'.  Then Vim
 	   will use a mix of tabs and spaces, but typing <Tab> and <BS> will
 	   behave like a tab appears every 4 (or 3) characters.
-	2. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use
+	   This is the recommended way, the file will look the same with other
+	   tools and when listing it in a terminal.
+	2. Set 'softtabstop' and 'shiftwidth' to whatever you prefer and use
+	   'expandtab'.  This way you will always insert spaces.  The
+	   formatting will never be messed up when 'tabstop' is changed (leave
+	   it at 8 just in case).  The file will be a bit larger.
+	   You do need to check if no Tabs exist in the file.  You can get rid
+	   of them by first setting 'expandtab' and using `%retab!`, making
+	   sure the value of 'tabstop' is set correctly.
+	3. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use
 	   'expandtab'.  This way you will always insert spaces.  The
 	   formatting will never be messed up when 'tabstop' is changed.
-	3. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use a
+	   You do need to check if no Tabs exist in the file, just like in the
+	   item just above.
+	4. Set 'tabstop' and 'shiftwidth' to whatever you prefer and use a
 	   |modeline| to set these values when editing the file again.  Only
-	   works when using Vim to edit the file.
-	4. Always set 'tabstop' and 'shiftwidth' to the same value, and
+	   works when using Vim to edit the file, other tools assume a tabstop
+	   is worth 8 spaces.
+	5. Always set 'tabstop' and 'shiftwidth' to the same value, and
 	   'noexpandtab'.  This should then work (for initial indents only)
 	   for any tabstop setting that people use.  It might be nice to have
 	   tabs after the first non-blank inserted as spaces if you do this
diff --git a/runtime/doc/repeat.txt b/runtime/doc/repeat.txt
index 307a0a9524..17dffa82f7 100644
--- a/runtime/doc/repeat.txt
+++ b/runtime/doc/repeat.txt
@@ -1,4 +1,4 @@
-*repeat.txt*    For Vim version 9.0.  Last change: 2023 May 01
+*repeat.txt*    For Vim version 9.0.  Last change: 2023 May 26
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -308,8 +308,8 @@ For writing a Vim script, see chapter 41 of the user manual |usr_41.txt|.
 			'runtimepath'.
 
 			If the filetype detection was not enabled yet (this
-			is usually done with a "syntax enable" or "filetype
-			on" command in your .vimrc file), this will also look
+			is usually done with a `syntax enable` or `filetype on`
+			command in your .vimrc file), this will also look
 			for "{name}/ftdetect/*.vim" files.
 
 			When the optional ! is added no plugin files or
diff --git a/runtime/doc/spell.txt b/runtime/doc/spell.txt
index 513ca8ff92..941ef9dc8a 100644
--- a/runtime/doc/spell.txt
+++ b/runtime/doc/spell.txt
@@ -1,4 +1,4 @@
-*spell.txt*	For Vim version 9.0.  Last change: 2023 Apr 21
+*spell.txt*	For Vim version 9.0.  Last change: 2023 May 25
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -122,7 +122,7 @@ zuG			Undo |zW| and |zG|, remove the word from the internal
 			list, like with |zW|.
 
 							*:spellra* *:spellrare*
-:[count]spellr[are] {word}
+:[count]spellra[re] {word}
 			Add {word} as a rare word to 'spellfile', similar to
 			|zw|.  Without count the first name is used, with
 			a count of two the second entry, etc.
@@ -135,7 +135,7 @@ zuG			Undo |zW| and |zG|, remove the word from the internal
 		nnoremap z/  :exe ':spellrare! ' .. expand('<cWORD>')<CR>
 <			|:spellundo|, |zuw|, or |zuW| can be used to undo this.
 
-:spellr[rare]! {word}	Add {word} as a rare word to the internal word
+:spellra[re]! {word}	Add {word} as a rare word to the internal word
 			list, similar to |zW|.
 
 :[count]spellu[ndo] {word}				*:spellu* *:spellundo*
diff --git a/runtime/doc/starting.txt b/runtime/doc/starting.txt
index 5993f65574..6bc4513476 100644
--- a/runtime/doc/starting.txt
+++ b/runtime/doc/starting.txt
@@ -1,4 +1,4 @@
-*starting.txt*  For Vim version 9.0.  Last change: 2022 Nov 30
+*starting.txt*  For Vim version 9.0.  Last change: 2023 May 30
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -792,9 +792,11 @@ accordingly.  Vim proceeds in this order:
 
 2. Process the arguments
 	The options and file names from the command that start Vim are
-	inspected.  Buffers are created for all files (but not loaded yet).
+	inspected.
 	The |-V| argument can be used to display or log what happens next,
 	useful for debugging the initializations.
+	The |--cmd| arguments are executed.
+	Buffers are created for all files (but not loaded yet).
 
 3. Execute Ex commands, from environment variables and/or files
 	An environment variable is read as one Ex command line, where multiple
diff --git a/runtime/doc/tags b/runtime/doc/tags
index ad18f8d542..51c0323acb 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -4653,6 +4653,7 @@ E337	gui.txt	/*E337*
 E338	editing.txt	/*E338*
 E339	message.txt	/*E339*
 E34	various.txt	/*E34*
+E340	message.txt	/*E340*
 E341	message.txt	/*E341*
 E342	message.txt	/*E342*
 E343	options.txt	/*E343*
@@ -8158,6 +8159,7 @@ intel-itanium	syntax.txt	/*intel-itanium*
 intellimouse-wheel-problems	gui_w32.txt	/*intellimouse-wheel-problems*
 interactive-functions	usr_41.txt	/*interactive-functions*
 interfaces-5.2	version5.txt	/*interfaces-5.2*
+internal-error	message.txt	/*internal-error*
 internal-variables	eval.txt	/*internal-variables*
 internal-wordlist	spell.txt	/*internal-wordlist*
 internet	intro.txt	/*internet*
@@ -10883,6 +10885,7 @@ vim9-declaration	vim9.txt	/*vim9-declaration*
 vim9-declarations	usr_41.txt	/*vim9-declarations*
 vim9-differences	vim9.txt	/*vim9-differences*
 vim9-export	vim9.txt	/*vim9-export*
+vim9-false-true	vim9.txt	/*vim9-false-true*
 vim9-final	vim9.txt	/*vim9-final*
 vim9-function-defined-later	vim9.txt	/*vim9-function-defined-later*
 vim9-gotchas	vim9.txt	/*vim9-gotchas*
@@ -10900,6 +10903,7 @@ vim9-rationale	vim9.txt	/*vim9-rationale*
 vim9-reload	vim9.txt	/*vim9-reload*
 vim9-s-namespace	vim9.txt	/*vim9-s-namespace*
 vim9-scopes	vim9.txt	/*vim9-scopes*
+vim9-string-index	vim9.txt	/*vim9-string-index*
 vim9-types	vim9.txt	/*vim9-types*
 vim9-unpack-ignore	vim9.txt	/*vim9-unpack-ignore*
 vim9-user-command	vim9.txt	/*vim9-user-command*
diff --git a/runtime/doc/terminal.txt b/runtime/doc/terminal.txt
index 7bd062fef6..7a82fcf185 100644
--- a/runtime/doc/terminal.txt
+++ b/runtime/doc/terminal.txt
@@ -1,4 +1,4 @@
-*terminal.txt*	For Vim version 9.0.  Last change: 2022 Nov 10
+*terminal.txt*	For Vim version 9.0.  Last change: 2023 Jun 09
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1452,8 +1452,8 @@ If there is no g:termdebug_config you can use: >
 	let g:termdebug_map_K = 0
 <
 						*termdebug_disasm_window*
-If you want the Asm window shown by default, set the flag to 1.
-the "disasm_window_height" entry can be used to set the window height: >
+If you want the Asm window shown by default, set the "disasm_window" flag to
+1.  The "disasm_window_height" entry can be used to set the window height: >
 	let g:termdebug_config['disasm_window'] = 1
 	let g:termdebug_config['disasm_window_height'] = 15
 If there is no g:termdebug_config you can use: >
diff --git a/runtime/doc/testing.txt b/runtime/doc/testing.txt
index 97faea0464..362f2b9714 100644
--- a/runtime/doc/testing.txt
+++ b/runtime/doc/testing.txt
@@ -1,4 +1,4 @@
-*testing.txt*	For Vim version 9.0.  Last change: 2023 May 04
+*testing.txt*	For Vim version 9.0.  Last change: 2023 May 18
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -166,15 +166,17 @@ test_gui_event({event}, {args})
 		  Set or drag the left, right or horizontal scrollbar.  Only
 		  works when the scrollbar actually exists.  The supported
 		  items in {args} are:
-		    which:	scrollbar. The supported values are:
+		    which:	Selects the scrollbar. The supported values
+				are:
 				    left  Left scrollbar of the current window
 				    right Right scrollbar of the current window
 				    hor   Horizontal scrollbar
-		    value:	amount to scroll.  For the vertical scrollbars
-				the value can be 1 to the line-count of the
-				buffer.  For the horizontal scrollbar the
-				value can be between 1 and the maximum line
-				length, assuming 'wrap' is not set.
+		    value:	Amount to scroll.  For the vertical scrollbars
+				the value can be between 0 to the line-count
+				of the buffer minus one.  For the horizontal
+				scrollbar the value can be between 1 and the
+				maximum line length, assuming 'wrap' is not
+				set.
 		    dragging:	1 to drag the scrollbar and 0 to click in the
 				scrollbar.
 
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 5c1d38a105..60903f922e 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1,4 +1,4 @@
-*todo.txt*      For Vim version 9.0.  Last change: 2023 May 13
+*todo.txt*      For Vim version 9.0.  Last change: 2023 Jun 08
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -38,11 +38,12 @@ browser use: https://github.com/vim/vim/issues/1234
 							*known-bugs*
 -------------------- Known bugs and current work -----------------------
 
-Crash when splitting window: #11961.  Set RedrawingDisabled in
-win_split_ins().
+FILETYPE_FILE is defined to the same value in multiple places.
+Only use the one in feature.h.  Others too.
 
-CTRL-J mapping is not used if halfway another mapping. #12002
-Is simplified mapping not used but escape code has been simplified?
+Mapping with modifier is not recognized after a partial mapping.  Probably
+because the typeahead was simplified when looking for a matching mapping.
+Need to somehow undo the simplification.  #12002
 
 Windows scroll when using the autocmd window.  #12085
 in restore_snapshot_rec() restore more values from the snapshot, instead of
@@ -57,6 +58,8 @@ When a help item can't be found, then open 'helpfile'.  Search for the tag in
 that file and gtive E149 only when not found.  Helps for a tiny Vim installed
 without all the help files.
 
+SpellCap highlight not updated - PR #12428
+
 Virtual text problems:
 -  Deleting character before a wrapping virtual text, causes for the following
    lines to dissapear (Issue #12244)
@@ -64,10 +67,15 @@ Virtual text problems:
    gone (Issue #12028)
 -  Virtual text aligned "above": Wrong indentation when using tabs  (Issue
    #12232)
+-  Virtual text to the right of the line that isn't visible doesn't cause the
+   'extends' character to show in 'list' mode.  #12478
 -  Virtual text to the right of the line that fits exactly on screen causes
    that line and all lines below it not to be displayed (Issue #12213)
 -  Window screen gets wrong when a virtual text is placed on 'above' or
    'below' on an empty line (Issue #11959)
+-  truncated Virtual text below an empty line causes display error #12493
+
+include #12403: window for Termdebug showing local variables
 
 include #12140: positional arguments in printf(), fixes #10577
 
@@ -80,6 +88,10 @@ highlighted. (van-de-bugger, 2018 Jan 23, #2576)
 
 Improve profiling by caching matching functions:  PR  #12192
 
+With 'smoothscroll' set and "lastline" in 'display', moving the cursor to a
+wrapping line that makes the display scroll up may scroll much more than
+needed, thus jump-scrolling. (part of issue 12411)
+
 Add filecopy() ?  #12346
 
 Implement foreach()  PR  #12166
@@ -91,12 +103,18 @@ Errors when running tests with valgrind:
 - test_gui.vim:
     Found errors in Test_gui_mouse_event():
 
+When every block in if/elseif ends in "throw" or "return" code following after
+"endif" should give an "unreachable code" error.
+
 Upcoming larger works:
 - Make spell checking work with recent .dic/.aff files, e.g. French.  #4916
     Make Vim understand the format somehow?   Search for "spell" below.
     Make sure suggestions are speedy, also with composed words (German).
-- Make syntax highlighting faster and better.  Discuss alternatives for using
-  other grammars (treesitter, TextMate).
+- Make syntax highlighting faster and better.
+  Add a generic mechanism to test a syntax plugin: An input file for the
+  filetype and a screendump of expected result.  With a way to specify the
+  setup (global variables) and another dump file from that.
+  Discuss alternatives for using other grammars (treesitter, TextMate).
    - Possibly conversion to Vim syntax rules.
    - Other mechanism than group and cluster to nest syntax items, to be used
      for grammars.
@@ -116,11 +134,20 @@ Further Vim9 improvements, possibly after launch:
 - implement :class and :interface: See |vim9-classes
   - Change access: public by default, private by prefixing "_".
 	Check for error: can't have same name twice (ignoring "_" prefix).
+  - Private methods?
+	either: private def Func()
+	    or: def _Func()
+    Perhaps use "private" keyword instead of "_" prefix?
+  - "final" object members - can only be set in the constructor.
   - Cannot use class type of itself in the method (Issue #12369)
+  - Cannot use an object method in a lambda  #12417
+	Define all methods before compiling them?
   - class members initialized during definition (Issue #12041)
-  - cannot call class member of funcref type  (Issue #12324)
-  - nested function unable to directly modify private member (Issue #12076)
-      And: can't use "this" keyword in lambda function (Issue #12336)
+  - Cannot call class member of funcref type  (Issue #12324)
+	Also #12081 first case.
+  - Using list of functions does not work #12081 (repro in later message).
+  - Weird `class X not found on interface X` error (Issue #12023)
+  - First argument of call() cannot be "obj.Func". (#11865)
   - "return this" required for early return from constructor (inconsistent)
     (Issue #12040)
   - class/method confusion inside ":def" when using "class extends" (Issue
@@ -135,11 +162,6 @@ Further Vim9 improvements, possibly after launch:
 	email lifepillar 2023 Mar 26
   - Getting member of variable with "any" type should be handled at runtime.
     Remove temporary solution from #12096 / patch 9.0.1375.
-  - Private methods?
-	either: private def Func()
-	    or: def _Func()
-    Perhaps use "private" keyword instead of "_" prefix?
-  - "final" object members - can only be set in the constructor.
   - "obj.Method()" does not always work in a compiled function, assumes "obj"
     is a dictionary.  #12196  Issue #12024 might be the same problem.
     Issue #11822: any.Func() can be a dict or an object call, need to handle
@@ -173,20 +195,16 @@ Further Vim9 improvements, possibly after launch:
 - Implement as part of an expression: ++expr, --expr, expr++, expr--.
 
 Information missing in terminfo:
+- Codes used for focus gained and lost termcodes are hard-coded in
+  set_termname(), not named.
+- t_fe	enable focus-event tracking
+- t_fd	disable focus-event tracking
 - Accept "hyper" and "meta" modifiers (16 and 32) from Kitty like Meta?
     8 is actually "super".
 - t_RV	request terminal version string; xterm:	"\033[>c"
     change in terminfo for "RV" uses the wrong escape sequence 7 - 14 Jan only
 - Codes for <PasteStart> t_PS and <PasteEnd> t_PE; with bracketed paste:
     t_BE and t_BD.
-- Codes used for focus gained and lost (currently using use_xterm_like_mouse())
-  termcodes are hard-coded in set_termname(), not named.
-    Use the XF flag?  enables recognizing the focus in/out events.
-    Check if t_fe is not empty.
-    Check for "1004" in t_XM. (disadvantage: only focus events when mouse is
-    used)
-- t_fe	enable focus-event tracking
-- t_fd	disable focus-event tracking
 Modifiers for various keys
 - flag to indicate "xterm compatible modifiers" ?
 Underline and similar:
@@ -356,6 +374,12 @@ Autoconf: must use autoconf 2.69, later version generates lots of warnings
 Problem with Visual highlight when 'linebreak' and 'showbreak' are set.
 #11272
 
+'cindent': compound literal indented wrong.  Check for " = " before "{"?
+#12491
+
+GUI Scroll test fails on FreeBSD when using Motif.  See FIXME in
+Test_scrollbars in src/test_gui.vim
+
 Selected index returned by complete_info() does not match the index in the
 list of items.  #12230
 
@@ -383,6 +407,9 @@ Add BufDeletePost.  #11041
 
 Add winid arg to col() and charcol()  #11466 (request #11461)
 
+'switchbuf' set to "newtab" does not work for ":cfirst" when in the quickfix
+window.  #12436
+
 When :argument has a non-number argument, use it like :buffer to find the
 argument by name.  #12272
 
@@ -408,6 +435,10 @@ PR #11579 to add visualtext(), return Visually selected text.
 
 PR #12032: Support Python 3 stable ABI.
 
+PR #11860: Add more info to 'colorcolumn': display a character and highlight
+for each separate entry.  Disadvantage: option value gets very complicated
+with multiple entries, e.g. every 8 columns.
+
 Stray characters in the shell #11719, caused by requesting a response for:
 - XT key sequences
 - Whether modifyOtherKeys is active
@@ -472,6 +503,10 @@ To avoid flicker: add an option that when a screen clear is requested, instead
 of clearing it draws everything and uses "clear to end of line" for every line.
 Resetting 't_ut' already causes this?
 
+Instead of prefixing "INTERNAL" to internal messages, add a message in iemsg()
+and siemsg() and translate it.  Messages only given to them don't need
+translation.
+
 When scheme can't be found by configure there is no clear "not found" message:
     configure:5769: checking MzScheme install prefix
     configure:5781: result:
@@ -489,7 +524,10 @@ Idea: when typing ":e /some/dir/" and "dir" does not exist, highlight in red.
 initialization to figure out the default value from 'shell'.  Add a test for
 this.
 
-Support translations for plugins: #11637
+Add a diff() function to use the built-in diff support in a script.
+#12321   Is the returned value in the right form now?
+
+Support translations for plugins: #11637  PR: #12447
 - Need a tool like xgettext for Vim script, generates a .pot file.
   Need the equivalent of _() and N_(), perhaps TR() and TRN().
 - Instructions for how to create .po files and translate.
@@ -541,6 +579,8 @@ New English spell files also have very slow suggestions.
 When 'spelloptions' is "camel" then zG doesn't work on some words.
 (Gary Johnson, 17 Oct 2022)
 
+SpellCap doesn't show below a closed fold. #12420
+
 'cdpath' problems:
 - Adding "~" to 'cdpath' doesn't work for completion?  (Davido, 2013 Aug 19)
 - Problem with 'cdpath' on MS-Windows when a directory is equal to $HOME.
@@ -558,6 +598,11 @@ to tell which value from getvvcol() should be used. (#7964)
 Value returned by virtcol() changes depending on how lines wrap.  This is
 inconsistent with the documentation.
 
+When 'wildignore' has an entry ending in "/*" this means nothing matching the
+path before it will be added.  When encountering a directory check this and if
+there is a match do not scan the directory (possibly speeds up :find a lot).
+#12482
+
 globpath() does not use 'wildignorecase' at all? (related to #8350)
 
 mksession uses :buffer instead of :edit in one place but not another. #10629
@@ -2270,10 +2315,6 @@ Diff mode out of sync. (Gary Johnson, 2010 Aug 4)
 Win32: completion of file name ":e c:\!test" results in ":e c:\\!test", which
 does not work. (Nieko Maatjes, 2009 Jan 8, Ingo Karkat, 2009 Jan 22)
 
-opening/closing window causes other window with 'winfixheight' to change
-height.  Also happens when there is another window in the frame, if it's not
-very high. (Yegappan Lakshmanan, 2010 Jul 22, Michael Peeters, 2010 Jul 22)
-
 Using ~ works OK on 'a' with composing char, but not on 0x0418  with composing
 char 0x0301. (Tony Mechelynck, 2009 Mar 4)
 
diff --git a/runtime/doc/userfunc.txt b/runtime/doc/userfunc.txt
index 210c2c5445..138f27ee82 100644
--- a/runtime/doc/userfunc.txt
+++ b/runtime/doc/userfunc.txt
@@ -1,4 +1,4 @@
-*userfunc.txt*	For Vim version 9.0.  Last change: 2023 Feb 02
+*userfunc.txt*	For Vim version 9.0.  Last change: 2023 May 23
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -51,6 +51,13 @@ define a global function.
 			{name} can also be a |Dictionary| entry that is a
 			|Funcref|: >
 				:function dict.init
+<			Note that {name} is not an expression, you cannot use
+			a variable that is a function reference.  You can use
+			this dirty trick to list the function referred to with
+			variable "Funcref": >
+				let g:MyFuncref = Funcref
+				func g:MyFuncref
+				unlet g:MyFuncref
 
 :fu[nction] /{pattern}	List functions with a name matching {pattern}.
 			Example that lists all functions ending with "File": >
diff --git a/runtime/doc/vim9.txt b/runtime/doc/vim9.txt
index 6f9737543b..4b0cdbb676 100644
--- a/runtime/doc/vim9.txt
+++ b/runtime/doc/vim9.txt
@@ -1,4 +1,4 @@
-*vim9.txt*	For Vim version 9.0.  Last change: 2023 Mar 07
+*vim9.txt*	For Vim version 9.0.  Last change: 2023 Jun 10
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -117,6 +117,9 @@ script and `:def` functions; details are below:
 - Unless mentioned specifically, the highest |scriptversion| is used.
 - When defining an expression mapping, the expression will be evaluated in the
   context of the script where it was defined.
+- When indexing a string the index is counted in characters, not bytes:
+  |vim9-string-index|
+- Some possibly unexpected differences: |vim9-gotchas|.
 
 
 Comments starting with # ~
@@ -190,8 +193,8 @@ created yet.  In this case you can call `execute()` to invoke it at runtime. >
 used for the command or the error was caught a `:try` block), does not get a
 range passed, cannot be a "dict" function, and can always be a closure.
 						*vim9-no-dict-function*
-Later classes will be added, which replaces the "dict function" mechanism.
-For now you will need to pass the dictionary explicitly: >
+You can use a Vim9 Class (|Vim9-class|) instead of a "dict function".
+You can also pass the dictionary explicitly: >
 	def DictFunc(self: dict<any>, arg: string)
 	   echo self[arg]
 	enddef
@@ -1056,11 +1059,11 @@ It is possible to compare `null`  with any value, this will not give a type
 error.  However, comparing `null` with a number, float or bool will always
 result in `false`.  This is different from legacy script, where comparing
 `null` with zero or `false` would return `true`.
-
+							*vim9-false-true*
 When converting a boolean to a string `false` and `true` are used, not
 `v:false` and `v:true` like in legacy script.  `v:none` has no `none`
 replacement, it has no equivalent in other languages.
-
+							*vim9-string-index*
 Indexing a string with [idx] or taking a slice with [idx : idx] uses character
 indexes instead of byte indexes.  Composing characters are included.
 Example: >
diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index c5dade3eb0..5df8ba943c 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1,7 +1,7 @@
 " Vim support file to detect file types
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2023 May 10
+" Last Change:	2023 Jun 09
 
 " Listen very carefully, I will say this only once
 if exists("did_load_filetypes")
diff --git a/runtime/ftplugin/corn.vim b/runtime/ftplugin/corn.vim
new file mode 100644
index 0000000000..2259442229
--- /dev/null
+++ b/runtime/ftplugin/corn.vim
@@