Update runtime files

runtime/doc/eval.txt

@@ -3608,6 +3608,9 @@ text...
 			iterate over.  Unlike with |List|, modifying the
 			|Blob| does not affect the iteration.
 
+			When {object} is a |String| each item is a string with
+			one character, plus any combining characters.
+
 			In |Vim9| script `:endfor` cannot be shortened, to
 			improve script readability.
 
@@ -3827,7 +3830,9 @@ text...
 			Like |:echomsg| but when the messages popup window is
 			available the message is displayed there.  This means
 			it will show for three seconds and avoid a
-			|hit-enter| prompt.
+			|hit-enter| prompt.  If you want to hide it before
+			that, press Esc in Normal mode (when it would
+			otherwise beep).
 			The message window is available when Vim was compiled
 			with the +timer and the +popupwin features.
 

runtime/doc/syntax.txt

@@ -5368,7 +5368,9 @@ CursorLineFold	Like FoldColumn when 'cursorline' is set for the cursor line.
 							*hl-MatchParen*
 MatchParen	Character under the cursor or just before it, if it
 		is a paired bracket, and its match. |pi_paren.txt|
-
+							*hl-MessageWindow*
+MessageWindow	Messages popup window used when 'cmdheight' is zero.  If not
+		defined |hl-WarningMsg| is used.
 							*hl-ModeMsg*
 ModeMsg		'showmode' message (e.g., "-- INSERT --").
 							*hl-MoreMsg*
@@ -5388,6 +5390,10 @@ PmenuSel	Popup menu: Selected item.
 PmenuSbar	Popup menu: Scrollbar.
 							*hl-PmenuThumb*
 PmenuThumb	Popup menu: Thumb of the scrollbar.
+							*hl-PopupNotification*
+PopupNotification
+		Popup window created with |popup_notification()|.  If not
+		defined |hl-WarningMsg| is used.
 							*hl-Question*
 Question	|hit-enter| prompt and yes/no questions.
 							*hl-QuickFixLine*

runtime/doc/tags

@@ -2469,6 +2469,9 @@ $quote	eval.txt	/*$quote*
 :echom	eval.txt	/*:echom*
 :echomsg	eval.txt	/*:echomsg*
 :echon	eval.txt	/*:echon*
+:echow	eval.txt	/*:echow*
+:echowin	eval.txt	/*:echowin*
+:echowindow	eval.txt	/*:echowindow*
 :edit	editing.txt	/*:edit*
 :edit!	editing.txt	/*:edit!*
 :edit!_f	editing.txt	/*:edit!_f*
@@ -4324,6 +4327,7 @@ E1293	textprop.txt	/*E1293*
 E1294	textprop.txt	/*E1294*
 E1295	textprop.txt	/*E1295*
 E1296	textprop.txt	/*E1296*
+E1297	vim9.txt	/*E1297*
 E13	message.txt	/*E13*
 E131	eval.txt	/*E131*
 E132	eval.txt	/*E132*
@@ -7735,6 +7739,7 @@ hl-LineNrAbove	syntax.txt	/*hl-LineNrAbove*
 hl-LineNrBelow	syntax.txt	/*hl-LineNrBelow*
 hl-MatchParen	syntax.txt	/*hl-MatchParen*
 hl-Menu	syntax.txt	/*hl-Menu*
+hl-MessageWindow	syntax.txt	/*hl-MessageWindow*
 hl-ModeMsg	syntax.txt	/*hl-ModeMsg*
 hl-MoreMsg	syntax.txt	/*hl-MoreMsg*
 hl-NonText	syntax.txt	/*hl-NonText*
@@ -7743,6 +7748,7 @@ hl-Pmenu	syntax.txt	/*hl-Pmenu*
 hl-PmenuSbar	syntax.txt	/*hl-PmenuSbar*
 hl-PmenuSel	syntax.txt	/*hl-PmenuSel*
 hl-PmenuThumb	syntax.txt	/*hl-PmenuThumb*
+hl-PopupNotification	syntax.txt	/*hl-PopupNotification*
 hl-Question	syntax.txt	/*hl-Question*
 hl-QuickFixLine	syntax.txt	/*hl-QuickFixLine*
 hl-Scrollbar	syntax.txt	/*hl-Scrollbar*
@@ -9432,6 +9438,7 @@ setbufvar()	builtin.txt	/*setbufvar()*
 setcellwidths()	builtin.txt	/*setcellwidths()*
 setcharpos()	builtin.txt	/*setcharpos()*
 setcharsearch()	builtin.txt	/*setcharsearch()*
+setcmdline()	builtin.txt	/*setcmdline()*
 setcmdpos()	builtin.txt	/*setcmdpos()*
 setcursorcharpos()	builtin.txt	/*setcursorcharpos()*
 setenv()	builtin.txt	/*setenv()*

runtime/doc/todo.txt

@@ -38,8 +38,13 @@ browser use: https://github.com/vim/vim/issues/1234
 							*known-bugs*
 -------------------- Known bugs and current work -----------------------
 
+cmdheight=0:
+- :g/pattern should not use message window  #11012
+
 *.sil detection with FTsil() (lacygoill, Aug 25)
 
+Avoid using "Xfile" and "Xdir" in tests, use specific names.
+
 Further Vim9 improvements, possibly after launch:
 - Use Vim9 for more runtime files.
 - Check performance with callgrind and kcachegrind.
@@ -178,19 +183,10 @@ Terminal emulator window:
 - When 'encoding' is not utf-8, or the job is using another encoding, setup
   conversions.
 
-Patches considered for including:
-- use int instead of char_ for index  #10818  needs a test
-- Add "-n" option to xxd. #10599  needs a test
-- allow for nesting of timeout, sketch in #10595
-- Add setcmdline()  #10869
-
 Cleanup:
-- Remove OLD_DIGRAPHS ?
 - Remove FEAT_FOOTER ?
 
-Add 'splitscroll'  #10682  Useful?  Any trouble? Null Chilly says it's OK.
-    suggestion: names instead of numbers for the option value
-    problem depending on whether window is focused or not
+Add 'splitscroll'  #10682  Useful?  Any remaining trouble?
 
 Autoconf: must use autoconf 2.69, later version generates lots of warnings
 - try using autoconf 2.71 and fix all "obsolete" warnings
@@ -882,9 +878,6 @@ The ++ options for the :edit command are also useful on the Vim command line.
 Overlong utf-8 sequence is displayed wrong. (Harm te Hennepe, 2017 Sep 14,
 #2089)  Patch with possible solution by Björn Linse.
 
-The change list index is local to a buffer, but it doesn't make sense using it
-for another buffer.  (lacygoill) Copy w_changelistidx to wininfo_S and back.
-
 X11: Putting more than about 262040 characters of text on the clipboard and
 pasting it in another Vim doesn't work.  (Dominique Pelle, 2008 Aug 21-23)
 clip_x11_request_selection_cb() is called with zero value and length.

runtime/doc/vim9.txt

@@ -1618,7 +1618,7 @@ type, it can not be used in Vim9 script.
 			 *E1211* *E1217* *E1218* *E1219* *E1220* *E1221*
 			 *E1222* *E1223* *E1224* *E1225* *E1226* *E1227*
 			 *E1228* *E1238* *E1250* *E1251* *E1252* *E1253*
-			 *E1256*
+			 *E1256* *E1297*
 Types are checked for most builtin functions to make it easier to spot
 mistakes.