diff --git a/runtime/syntax/generator/gen_syntax_vim.vim b/runtime/syntax/generator/gen_syntax_vim.vim
index ab7c912..f887920 100644
--- a/runtime/syntax/generator/gen_syntax_vim.vim
+++ b/runtime/syntax/generator/gen_syntax_vim.vim
@@ -2,7 +2,7 @@
 " Language: Vim script
 " Maintainer: Hirohito Higashi (h_east)
 " URL: https://github.com/vim-jp/syntax-vim-ex
-" Last Change: 2024 Jul 18
+" Last Change: 2024 Aug 21
 " Version: 2.1.1
 
 let s:keepcpo= &cpo
@@ -526,15 +526,15 @@
 		new
 		exec 'read ' . file_name
 		norm! gg
-		exec '/^}\s*command_complete\[\]\s*=\s*$/+1;/^};/-1yank'
+		exec '/^static keyvalue_T command_complete_tab\[] =$/+1;/^};$/-1yank'
 		%delete _
 
 		put
-		g!/^\s*{.*"\w\+"\s*}\s*,.*$/d
+		g!/^\s*KEYVALUE_ENTRY(/d
 		g/"custom\(list\)\?"/d
 
 		for line in getline(1, line('$'))
-			let list = matchlist(line, '^\s*{.*"\(\w\+\)"\s*}\s*,')
+			let list = matchlist(line, '^\s*KEYVALUE_ENTRY(EXPAND_\w\+,\s*"\(\w\+\)"')
 			let item.name = list[1]
 			call add(a:li, copy(item))
 		endfor
diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 883056b..169fe20 100644
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -3,7 +3,7 @@
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
 " URL:	   https://github.com/vim-jp/syntax-vim-ex
-" Last Change:	   2024 Aug 16
+" Last Change:	   2024 Aug 21
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -441,11 +441,12 @@
 syn match	vimEscape	contained	"\\<" contains=vimNotation
 syn match	vimEscape	contained	"\\<\*[^>]*>\=>"
 
-syn region	vimString	oneline start=+$'+ skip=+''+ end=+'+ contains=vimStringInterpolationBrace,vimStringInterpolationExpr
-syn region	vimString	oneline start=+$"+ end=+"+ contains=@vimStringGroup,vimStringInterpolationBrace,vimStringInterpolationExpr
+syn region	vimString	oneline start=+$'+ skip=+''+ end=+'+ contains=@vimStringInterpolation
+syn region	vimString	oneline start=+$"+ end=+"+ contains=@vimStringGroup,@vimStringInterpolation
 syn region	vimStringInterpolationExpr  oneline contained matchgroup=vimSep start=+{+ end=+}+ contains=@vimExprList
 syn match	vimStringInterpolationBrace contained "{{"
 syn match	vimStringInterpolationBrace contained "}}"
+syn cluster	vimStringInterpolation contains=vimStringInterpolationExpr,vimStringInterpolationBrace
 
 " Substitutions: {{{2
 " =============
@@ -525,13 +526,10 @@
 syn match	vimUnletBang	contained	"!"	skipwhite nextgroup=vimUnletVars
 syn region	vimUnletVars	contained	start="$\I\|\h" skip="\n\s*\\" end="$" end="|" contains=vimVar,vimEnvvar,vimContinue,vimString,vimNumber
 
-" Note: This incorrectly matches end markers with leading whitespace even if
-"       "trim" was not specified.  Matching :let indent for "trim" indented
-"       end markers would require a contained :let that cannot be restricted
-"       to the start pattern.  A common internal testing use of heredocs is to
-"       specify code blocks where :let commonly appears in the heredoc text.
-VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(trim\s\+\)\=\z(\L\S*\)'		             matchgroup=vimLetHereDocStop end='^\s*\z1$' extend
-VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(trim\s\+\)\=eval\s\+\|eval\s\+\%(trim\s\+\)\=\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\s*\z1$' contains=vimStringInterpolationExpr,vimStringInterpolationBrace extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)'	matchgroup=vimLetHereDocStop end='^\z1\z2$' extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\%(\s*\)\@>\z(\L\S*\)'			matchgroup=vimLetHereDocStop end='^\z1$' extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)'	matchgroup=vimLetHereDocStop end='^\z1\z2$' contains=@vimStringInterpolation extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*eval\%(\s\+\)\@>\z(\L\S*\)'			matchgroup=vimLetHereDocStop end='^\z1$' contains=@vimStringInterpolation extend
 
 Vim9 syn keyword	vim9Const	const	skipwhite nextgroup=vim9Variable,vim9VariableList
 Vim9 syn keyword	vim9Final	final	skipwhite nextgroup=vim9Variable,vim9VariableList
@@ -934,12 +932,16 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimLuaRegion
  exe "syn include @vimLuaScript ".s:luapath
- VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimLuaScript
- VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*$+ end=+\.$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+^\z(\s*\)lua\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+^\z(\s*\)lua\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*$+ end=+^\.$+		contains=@vimLuaScript
  syn cluster vimFuncBodyList	add=vimLuaRegion
 else
- syn region vimEmbedError start=+lua\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+lua\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)lua\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+lua\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)lua\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+lua\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:luapath
 
@@ -957,12 +959,16 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimPerlRegion
  exe "syn include @vimPerlScript ".s:perlpath
- VimFoldp syn region vimPerlRegion  matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*\z(\S*\)\ze\(\s*["#].*\)\=$+ end=+^\z1\ze\(\s*[#"].*\)\=$+	contains=@vimPerlScript
- VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*$+ end=+\.$+			contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*$+ end=+\.$+		contains=@vimPerlScript
  syn cluster vimFuncBodyList	add=vimPerlRegion
 else
- syn region vimEmbedError start=+pe\%[rl]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+pe\%[rl]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+pe\%[rl]\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+pe\%[rl]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:perlpath
 
@@ -980,12 +986,16 @@
  syn cluster vimFuncBodyList	add=vimRubyRegion
  unlet! b:current_syntax
  exe "syn include @vimRubyScript ".s:rubypath
- VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub[y]\s*<<\s*\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimRubyScript
- syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub[y]\s*<<\s*$+ end=+\.$+			contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub\%[y]\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub\%[y]\s*<<\s*$+ end=+\.$+		contains=@vimRubyScript
  syn cluster vimFuncBodyList	add=vimRubyRegion
 else
- syn region vimEmbedError start=+rub[y]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+rub[y]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+rub\%[y]\s*<<\s*\z(\S.*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+rub\%[y]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:rubypath
 
@@ -1003,14 +1013,18 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimPythonRegion
  exe "syn include @vimPythonScript ".s:pythonpath
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\%(trim\s*\)\=\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\%(trim\s*\)\=$+ end=+\.$+				contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\=\s*<<\s*\%(trim\s*\)\=$+ end=+\.$+				contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\z(\S\+\)+ end=+^\z1$+		contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*$+ end=+^\.$+			contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=\z(\S\+\)+ end=+^\z1$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=$+ end=+^\.$+		contains=@vimPythonScript
  syn cluster vimFuncBodyList	add=vimPythonRegion
 else
- syn region vimEmbedError start=+py\%[thon]3\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+py\%[thon]3\=\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+py\%[thon][3x]\=\s*<<\s*\z(\S\+\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+py\%[thon][3x]\=\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:pythonpath
 
@@ -1035,17 +1049,23 @@
   unlet! b:current_syntax
   syn cluster vimFuncBodyList	add=vimTclRegion
   exe "syn include @vimTclScript ".s:tclpath
-  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimTclScript
-  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc[l]\=\s*<<\s*$+ end=+\.$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+		contains=@vimTclScript
   syn cluster vimFuncBodyList	add=vimTclScript
  else
-  syn region vimEmbedError start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
-  syn region vimEmbedError start=+tc[l]\=\s*<<\s*$+ end=+\.$+
+  syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+  syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+
+  syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+  syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+
  endif
  unlet s:tclpath
 else
- syn region vimEmbedError start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+tc[l]\=\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:trytcl
 
@@ -1066,12 +1086,16 @@
  exe "syn include @vimMzSchemeScript ".s:mzschemepath
  let &isk= s:iskKeep
  unlet s:iskKeep
- VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimMzSchemeScript
- VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*$+ end=+\.$+		contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*\z(\S*\)+ end=+^\z1$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*$+ end=+^\.$+		contains=@vimMzSchemeScript
  syn cluster vimFuncBodyList	add=vimMzSchemeRegion
 else
- syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:mzschemepath
 
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 441f74f..1ae39cf 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -3,7 +3,7 @@
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
 " URL:	   https://github.com/vim-jp/syntax-vim-ex
-" Last Change:	   2024 Aug 16
+" Last Change:	   2024 Aug 21
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -418,7 +418,7 @@
 syn case ignore
 syn keyword	vimUserAttrbKey   contained	bar	ban[g]	cou[nt]	ra[nge] com[plete]	n[args]	re[gister]
 " GEN_SYN_VIM: vimUserAttrbCmplt, START_STR='syn keyword vimUserAttrbCmplt contained', END_STR=''
-syn keyword vimUserAttrbCmplt contained arglist augroup behave buffer color command compiler cscope diff_buffer dir environment event expression file file_in_path filetype function help highlight history keymap locale mapclear mapping menu messages syntax syntime option packadd runtime shellcmd sign tag tag_listfiles user var breakpoint scriptnames dir_in_path
+syn keyword vimUserAttrbCmplt contained arglist augroup behave breakpoint buffer color command compiler cscope diff_buffer dir dir_in_path environment event expression file file_in_path filetype function help highlight history keymap locale mapclear mapping menu messages option packadd runtime scriptnames shellcmd sign syntax syntime tag tag_listfiles user var
 syn keyword	vimUserAttrbCmplt contained	custom customlist nextgroup=vimUserAttrbCmpltFunc,vimUserCmdError
 syn match	vimUserAttrbCmpltFunc contained	",\%([sS]:\|<[sS][iI][dD]>\)\=\%(\h\w*\%([.#]\h\w*\)\+\|\h\w*\)"hs=s+1 nextgroup=vimUserCmdError
 
@@ -565,13 +565,10 @@
 syn match	vimUnletBang	contained	"!"	skipwhite nextgroup=vimUnletVars
 syn region	vimUnletVars	contained	start="$\I\|\h" skip="\n\s*\\" end="$" end="|" contains=vimVar,vimEnvvar,vimContinue,vimString,vimNumber
 
-" Note: This incorrectly matches end markers with leading whitespace even if
-"       "trim" was not specified.  Matching :let indent for "trim" indented
-"       end markers would require a contained :let that cannot be restricted
-"       to the start pattern.  A common internal testing use of heredocs is to
-"       specify code blocks where :let commonly appears in the heredoc text.
-VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(trim\s\+\)\=\z(\L\S*\)'			matchgroup=vimLetHereDocStop end='^\s*\z1$' extend
-VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(\%(trim\s\+\)\=eval\s\+\|eval\s\+\%(trim\s\+\)\=\)\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\s*\z1$' contains=@vimStringInterpolation extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)'	matchgroup=vimLetHereDocStop end='^\z1\z2$' extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\%(\s*\)\@>\z(\L\S*\)'			matchgroup=vimLetHereDocStop end='^\z1$' extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)'	matchgroup=vimLetHereDocStop end='^\z1\z2$' contains=@vimStringInterpolation extend
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*eval\%(\s\+\)\@>\z(\L\S*\)'			matchgroup=vimLetHereDocStop end='^\z1$' contains=@vimStringInterpolation extend
 
 Vim9 syn keyword	vim9Const	const	skipwhite nextgroup=vim9Variable,vim9VariableList
 Vim9 syn keyword	vim9Final	final	skipwhite nextgroup=vim9Variable,vim9VariableList
@@ -980,12 +977,16 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimLuaRegion
  exe "syn include @vimLuaScript ".s:luapath
- VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimLuaScript
- VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*$+ end=+\.$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+^\z(\s*\)lua\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+^\z(\s*\)lua\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimLuaScript
+ VimFoldl syn region vimLuaRegion matchgroup=vimScriptDelim start=+lua\s*<<\s*$+ end=+^\.$+		contains=@vimLuaScript
  syn cluster vimFuncBodyList	add=vimLuaRegion
 else
- syn region vimEmbedError start=+lua\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+lua\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)lua\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+lua\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)lua\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+lua\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:luapath
 
@@ -1003,12 +1004,16 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimPerlRegion
  exe "syn include @vimPerlScript ".s:perlpath
- VimFoldp syn region vimPerlRegion  matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*\z(\S*\)\ze\(\s*["#].*\)\=$+ end=+^\z1\ze\(\s*[#"].*\)\=$+	contains=@vimPerlScript
- VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*$+ end=+\.$+			contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimPerlScript
+ VimFoldp syn region vimPerlRegion	matchgroup=vimScriptDelim start=+pe\%[rl]\s*<<\s*$+ end=+\.$+		contains=@vimPerlScript
  syn cluster vimFuncBodyList	add=vimPerlRegion
 else
- syn region vimEmbedError start=+pe\%[rl]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+pe\%[rl]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+pe\%[rl]\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)pe\%[rl]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+pe\%[rl]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:perlpath
 
@@ -1026,12 +1031,16 @@
  syn cluster vimFuncBodyList	add=vimRubyRegion
  unlet! b:current_syntax
  exe "syn include @vimRubyScript ".s:rubypath
- VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub[y]\s*<<\s*\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimRubyScript
- syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub[y]\s*<<\s*$+ end=+\.$+			contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub\%[y]\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimRubyScript
+ VimFoldr syn region vimRubyRegion	matchgroup=vimScriptDelim start=+rub\%[y]\s*<<\s*$+ end=+\.$+		contains=@vimRubyScript
  syn cluster vimFuncBodyList	add=vimRubyRegion
 else
- syn region vimEmbedError start=+rub[y]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+rub[y]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+rub\%[y]\s*<<\s*\z(\S.*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)rub\%[y]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+rub\%[y]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:rubypath
 
@@ -1049,14 +1058,18 @@
  unlet! b:current_syntax
  syn cluster vimFuncBodyList	add=vimPythonRegion
  exe "syn include @vimPythonScript ".s:pythonpath
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\%(trim\s*\)\=\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\%(trim\s*\)\=$+ end=+\.$+				contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=\z(\S*\)\ze\(\s*#.*\)\=$+ end=+^\z1\ze\(\s*".*\)\=$+	contains=@vimPythonScript
- VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\=\s*<<\s*\%(trim\s*\)\=$+ end=+\.$+				contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*\z(\S\+\)+ end=+^\z1$+		contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon][3x]\=\s*<<\s*$+ end=+^\.$+			contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=\z(\S\+\)+ end=+^\z1$+	contains=@vimPythonScript
+ VimFoldP syn region vimPythonRegion matchgroup=vimScriptDelim start=+Py\%[thon]2or3\s*<<\s*\%(trim\s*\)\=$+ end=+^\.$+		contains=@vimPythonScript
  syn cluster vimFuncBodyList	add=vimPythonRegion
 else
- syn region vimEmbedError start=+py\%[thon]3\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+py\%[thon]3\=\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+py\%[thon][3x]\=\s*<<\s*\z(\S\+\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)py\%[thon][3x]\=\s*<<\s*trim\s*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+py\%[thon][3x]\=\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:pythonpath
 
@@ -1081,17 +1094,23 @@
   unlet! b:current_syntax
   syn cluster vimFuncBodyList	add=vimTclRegion
   exe "syn include @vimTclScript ".s:tclpath
-  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimTclScript
-  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc[l]\=\s*<<\s*$+ end=+\.$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+		contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimTclScript
+  VimFoldt syn region vimTclRegion matchgroup=vimScriptDelim start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+		contains=@vimTclScript
   syn cluster vimFuncBodyList	add=vimTclScript
  else
-  syn region vimEmbedError start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
-  syn region vimEmbedError start=+tc[l]\=\s*<<\s*$+ end=+\.$+
+  syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+  syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+
+  syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+  syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+
  endif
  unlet s:tclpath
 else
- syn region vimEmbedError start=+tc[l]\=\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+tc[l]\=\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)tc\%[l]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+tc\%[l]\=\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:trytcl
 
@@ -1112,12 +1131,16 @@
  exe "syn include @vimMzSchemeScript ".s:mzschemepath
  let &isk= s:iskKeep
  unlet s:iskKeep
- VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimMzSchemeScript
- VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*$+ end=+\.$+		contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*\z(\S*\)+ end=+^\z1$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s*$+ end=+^\z1\.$+	contains=@vimMzSchemeScript
+ VimFoldm syn region vimMzSchemeRegion matchgroup=vimScriptDelim start=+mz\%[scheme]\s*<<\s*$+ end=+^\.$+		contains=@vimMzSchemeScript
  syn cluster vimFuncBodyList	add=vimMzSchemeRegion
 else
- syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\+\z(\S\+\)+ end=+^\z1\z2$+
+ syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*\z(\S*\)+ end=+^\z1$+
+ syn region vimEmbedError start=+^\z(\s*\)mz\%[scheme]\s*<<\s*trim\s\*$+ end=+^\z1\.$+
+ syn region vimEmbedError start=+mz\%[scheme]\s*<<\s*$+ end=+^\.$+
 endif
 unlet s:mzschemepath