diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index c1706e0..ca54162 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -6,6 +6,7 @@
 " 	2023 Nov 20 by Vim Project (:loadkeymap improvements)
 " 	2023 Dec 06 by Vim Project (add missing assignment operators)
 " 	2023 Dec 10 by Vim Project (improve variable matching)
+" 	2023 Dec 21 by Vim Project (improve ex command matching)
 " Version:	9.0-25
 " URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_VIM
 " Automatically generated keyword lists: {{{1
@@ -184,7 +185,7 @@
 syn match vimNumber	'0[bB][01]\+'		       skipwhite nextgroup=vimGlobal,vimSubst,vimCommand,vimComment,vim9Comment           
 
 " All vimCommands are contained by vimIsCommand. {{{2
-syn match vimCmdSep	"[:|]\+"	skipwhite nextgroup=vimAddress,vimAutoCmd,vimEcho,vimIsCommand,vimExtCmd,vimFilter,vimLet,vimMap,vimMark,vimSet,vimSyntax,vimUserCmd
+syn match vimCmdSep	"[:|]\+"	skipwhite nextgroup=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimEcho,vimEchoHL,vimExecute,vimIsCommand,vimExtCmd,vimFilter,vimGlobal,vimHighlight,vimLet,vimMap,vimMark,vimNorm,vimSet,vimSyntax,vimUnlet,vimUnmap,vimUserCmd
 syn match vimIsCommand	"\<\h\w*\>"	contains=vimCommand
 syn match vimVar	      contained	"\<\h[a-zA-Z0-9#_]*\>"
 syn match vimVar		"\<[bwglstav]:\h[a-zA-Z0-9#_]*\>"
@@ -222,7 +223,7 @@
 
 " Augroup : vimAugroupError removed because long augroups caused sync'ing problems. {{{2
 " ======= : Trade-off: Increasing synclines with slower editing vs augroup END error checking.
-syn cluster vimAugroupList	contains=vimAugroup,vimIsCommand,vimUserCmd,vimExecute,vimNotFunc,vimFuncName,vimFunction,vimFunctionError,vimLineComment,vimNotFunc,vimMap,vimSpecFile,vimOper,vimNumber,vimOperParen,vimComment,vim9Comment,vimString,vimSubst,vimMark,vimRegister,vimAddress,vimFilter,vimCmplxRepeat,vimComment,vim9Comment,vimLet,vimSet,vimAutoCmd,vimRegion,vimSynLine,vimNotation,vimCtrlChar,vimFuncVar,vimContinue,vimSetEqual,vimOption
+syn cluster vimAugroupList	contains=vimAugroup,vimIsCommand,vimUserCmd,vimExecute,vimNotFunc,vimFuncName,vimFunction,vimFunctionError,vimLineComment,vimNotFunc,vimMap,vimSpecFile,vimOper,vimNumber,vimOperParen,vimComment,vim9Comment,vimString,vimSubst,vimMark,vimRegister,vimAddress,vimFilter,vimCmplxRepeat,vimComment,vim9Comment,vimLet,vimSet,vimAutoCmd,vimRegion,vimSynLine,vimNotation,vimCtrlChar,vimFuncVar,vimContinue,vimOption
 if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'a'
  syn region  vimAugroup	fold matchgroup=vimAugroupKey start="\<aug\%[roup]\>\ze\s\+\K\k*" end="\<aug\%[roup]\>\ze\s\+[eE][nN][dD]\>"	contains=vimAutoCmd,@vimAugroupList
 else