diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 958ff9f269..ec4c644bb8 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -232,7 +232,7 @@ syn match	vimNumber	'\<0z\%(\x\x\)\+\%(\.\%(\x\x\)\+\)*'	skipwhite nextgroup=@vi
 syn case match
 
 " All vimCommands are contained by vimIsCommand. {{{2
-syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutocmd,vimAugroup,vimBehave,vimCall,vimCatch,vimCommandModifier,vimConst,vimDoautocmd,vimDebuggreedy,vimDef,vimDefFold,vimDefer,vimDelcommand,vimDelFunction,@vimEcho,vimElse,vimEnddef,vimEndfunction,vimEndif,vimEval,vimExecute,vimIsCommand,vimExtCmd,vimExFilter,vimExMark,vimFiletype,vimFor,vimFunction,vimFunctionFold,vimGrep,vimGrepAdd,vimGlobal,vimHelpgrep,vimHighlight,vimImport,vimLet,vimLoadkeymap,vimLockvar,vimMake,vimMap,vimMark,vimMatch,vimNotFunc,vimNormal,vimProfdel,vimProfile,vimRedir,vimSet,vimSleep,vimSort,vimSyntax,vimSynColor,vimSynLink,vimThrow,vimUniq,vimUnlet,vimUnlockvar,vimUnmap,vimUserCmd,vimVimgrep,vimVimgrepadd,vimMenu,vimMenutranslate,@vim9CmdList,@vimExUserCmdList,vimLua,vimMzScheme,vimPerl,vimPython,vimPython3,vimPythonX,vimRuby,vimTcl
+syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutocmd,vimAugroup,vimBehave,vimCall,vimCatch,vimCommandModifier,vimConst,vimDoautocmd,vimDebuggreedy,vimDef,vimDefFold,vimDefer,vimDelcommand,vimDelFunction,@vimEcho,vimElse,vimEnddef,vimEndfunction,vimEndif,vimEval,vimExecute,vimIsCommand,vimExtCmd,vimExFilter,vimExMark,vimFiletype,vimFor,vimFunction,vimFunctionFold,vimGrep,vimGrepAdd,vimGlobal,vimHelpgrep,vimHighlight,vimImport,vimLet,vimLoadkeymap,vimLockvar,vimMake,vimMap,vimMark,vimMatch,vimNotFunc,vimNormal,vimProfdel,vimProfile,vimRedir,vimSet,vimSleep,vimSort,vimSyntax,vimSynColor,vimSynLink,vimThrow,vimUniq,vimUnlet,vimUnlockvar,vimUnmap,vimUserCmd,vimVimgrep,vimVimgrepadd,vimWincmd,vimMenu,vimMenutranslate,@vim9CmdList,@vimExUserCmdList,vimLua,vimMzScheme,vimPerl,vimPython,vimPython3,vimPythonX,vimRuby,vimTcl
 syn cluster vim9CmdList	contains=vim9Abstract,vim9Class,vim9Const,vim9Enum,vim9Export,vim9Final,vim9For,vim9Interface,vim9Type,vim9Var
 syn match vimCmdSep	"\\\@1<!|"	skipwhite nextgroup=@vimCmdList,vimSubst1,@vimFunc
 syn match vimCmdSep	":\+"	skipwhite nextgroup=@vimCmdList,vimSubst1
@@ -1573,6 +1573,17 @@ syn region	vimUniqPattern	  contained
 
 syn cluster vimUniqOptions contains=vimUniqOptions,vimUniqOptionsError
 
+" Wincmd: {{{2
+" ======
+syn match	vimWincmd	"\<winc\%[md]\>"	skipwhite nextgroup=vimWincmdArg	
+" TODO: consider extracting this list from the help file
+syn match	vimWincmdArg	contained
+      \ "\<[sSvnqojkhlwWtbpPrRxKJHLTfFz]\>\|[\^:=\-+_<>|\]}]\|\<g\s\+[\]}]\|\<g[fFtT]\>"
+      \ skipwhite nextgroup=vimCmdSep,vimComment,vim9Comment
+
+" only handles oneline assignments
+Vim9 syn match	vimWincmd	"\s\=\<winc\%[md]\>\ze\s\+=\s*\%([#|]\|$\)"	skipwhite nextgroup=vimWincmdArg
+
 " Syntax: {{{2
 "=======
 syn match	vimGroupList	contained	"[^[:space:],]\+\%(\s*,\s*[^[:space:],]\+\)*" contains=vimGroupSpecial
@@ -2513,6 +2524,7 @@ if !exists("skip_vim_syntax_inits")
  hi def link vimWildcardInterval	vimWildcard
  hi def link vimWildcardQuestion	vimWildcard
  hi def link vimWildcardStar	vimWildcard
+ hi def link vimWinCmd	vimCommand
 
  hi def link vim9Abstract	vimCommand
  hi def link vim9Boolean	Boolean