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new file mode 100644
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new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_02.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_02.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_03.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_03.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_04.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_04.dump
new file mode 100644
index 0000000..4d514b0
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_05.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_05.dump
new file mode 100644
index 0000000..15c72f8
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_06.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_06.dump
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 0000000..44856a1
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 0000000..52f113e
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_38.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_38.dump
new file mode 100644
index 0000000..33e2088
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_39.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_39.dump
new file mode 100644
index 0000000..ef99508
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_40.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_40.dump
new file mode 100644
index 0000000..29d35c5
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_41.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_41.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_42.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_42.dump
new file mode 100644
index 0000000..97e291f
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_43.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_43.dump
new file mode 100644
index 0000000..6764cea
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_44.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_44.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_45.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_45.dump
new file mode 100644
index 0000000..df10b4b
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_46.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_46.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_47.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_47.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_48.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_48.dump
new file mode 100644
index 0000000..0ef0613
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+++ b/runtime/syntax/testdir/dumps/vim_ex_commands_48.dump
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_49.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_49.dump
new file mode 100644
index 0000000..f451055
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_50.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_50.dump
new file mode 100644
index 0000000..1cd5033
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_51.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_51.dump
new file mode 100644
index 0000000..b9d0601
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_52.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_52.dump
new file mode 100644
index 0000000..7ebe287
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_53.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_53.dump
new file mode 100644
index 0000000..420001c
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+++ b/runtime/syntax/testdir/dumps/vim_ex_commands_53.dump
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_54.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_54.dump
new file mode 100644
index 0000000..2d16427
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_commands_54.dump
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_55.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_55.dump
new file mode 100644
index 0000000..d172d88
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_56.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_56.dump
new file mode 100644
index 0000000..847d6db
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_57.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_57.dump
new file mode 100644
index 0000000..38ade08
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_58.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_58.dump
new file mode 100644
index 0000000..a35547c
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_59.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_59.dump
new file mode 100644
index 0000000..85800e5
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_60.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_60.dump
new file mode 100644
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_61.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_61.dump
new file mode 100644
index 0000000..efb27e8
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new file mode 100644
index 0000000..8b85dd9
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_63.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_63.dump
new file mode 100644
index 0000000..cf5d08b
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_64.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_64.dump
new file mode 100644
index 0000000..bcffc89
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_commands_65.dump b/runtime/syntax/testdir/dumps/vim_ex_commands_65.dump
new file mode 100644
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new file mode 100644
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+|c+0#af5f00255&|a|l@1| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&||| |y+0#af5f00255&|a|n|k| +0#0000000&@57
+>c+0#af5f00255&|a|l@1| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&||| |z+0#af5f00255&| +0#0000000&@60
+@57|1@1|9|1|,|1| @7|B|o|t| 
diff --git a/runtime/syntax/testdir/input/vim_ex_commands.vim b/runtime/syntax/testdir/input/vim_ex_commands.vim
new file mode 100644
index 0000000..6826967
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim_ex_commands.vim
@@ -0,0 +1,1191 @@
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+call Foo() |help
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+call Foo() | endif
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+call Foo() | endfunction
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+call Foo() | endwhile
+call Foo() | enew
+call Foo() | eval
+call Foo() | ex
+call Foo() | execute
+call Foo() | exit
+call Foo() | export
+call Foo() | exusage
+call Foo() | file
+call Foo() | files
+call Foo() | filetype
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+call Foo() | finally
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+call Foo() | goto
+call Foo() | grep
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+call Foo() | helptags
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+call Foo() | history
+call Foo() | horizontal
+" FIXME
+call Foo() | insert
+    text
+.
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+call Foo() | pedit
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+call Foo() | profdel
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+call Foo() | previous
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+call Foo() | ptnext
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+call Foo() | put
+call Foo() | pwd
+call Foo() | py3
+call Foo() | python3
+call Foo() | py3do
+call Foo() | py3file
+call Foo() | python
+call Foo() | pydo
+call Foo() | pyfile
+call Foo() | pyx
+call Foo() | pythonx
+call Foo() | pyxdo
+call Foo() | pyxfile
+call Foo() | quit
+call Foo() | quitall
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+call Foo() | read
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+call Foo() | redir
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+call Foo() | return
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+call Foo() | rightbelow
+call Foo() | ruby
+call Foo() | rubydo
+call Foo() | rubyfile
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+call Foo() | runtime
+call Foo() | rviminfo
+call Foo() | substitute
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+call Foo() | scriptversion
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+call Foo() | source
+call Foo() | spelldump
+call Foo() | spellgood
+call Foo() | spellinfo
+call Foo() | spellrare
+call Foo() | spellrepall
+call Foo() | spellundo
+call Foo() | spellwrong
+call Foo() | split
+call Foo() | sprevious
+call Foo() | srewind
+call Foo() | stop
+call Foo() | stag
+call Foo() | startinsert
+call Foo() | startgreplace
+call Foo() | startreplace
+call Foo() | static
+call Foo() | stopinsert
+call Foo() | stjump
+call Foo() | stselect
+call Foo() | sunhide
+call Foo() | sunmap
+call Foo() | sunmenu
+call Foo() | suspend
+call Foo() | sview
+call Foo() | swapname
+call Foo() | syntax
+call Foo() | syntime
+call Foo() | syncbind
+call Foo() | t
+call Foo() | tNext
+call Foo() | tabNext
+call Foo() | tabclose
+call Foo() | tabdo
+call Foo() | tabedit
+call Foo() | tabfind
+call Foo() | tabfirst
+call Foo() | tablast
+call Foo() | tabmove
+call Foo() | tabnew
+call Foo() | tabnext
+call Foo() | tabonly
+call Foo() | tabprevious
+call Foo() | tabrewind
+call Foo() | tabs
+call Foo() | tab
+call Foo() | tag
+call Foo() | tags
+call Foo() | tcd
+call Foo() | tchdir
+call Foo() | tcl
+call Foo() | tcldo
+call Foo() | tclfile
+call Foo() | tearoff
+call Foo() | terminal
+call Foo() | tfirst
+call Foo() | throw
+call Foo() | tjump
+call Foo() | tlast
+call Foo() | tlmenu
+call Foo() | tlnoremenu
+call Foo() | tlunmenu
+call Foo() | tmapclear
+call Foo() | tmap
+call Foo() | tmenu
+call Foo() | tnext
+call Foo() | tnoremap
+call Foo() | topleft
+call Foo() | tprevious
+call Foo() | trewind
+call Foo() | try
+call Foo() | tselect
+call Foo() | tunmap
+call Foo() | tunmenu
+call Foo() | undo
+call Foo() | undojoin
+call Foo() | undolist
+call Foo() | unabbreviate
+call Foo() | unabbreviate
+call Foo() | unhide
+call Foo() | unlet
+call Foo() | unlockvar
+call Foo() | unmap
+call Foo() | unmenu
+call Foo() | unsilent
+call Foo() | update
+call Foo() | vglobal/.../
+call Foo() | var
+call Foo() | version
+call Foo() | verbose
+call Foo() | vertical
+call Foo() | vim9cmd
+call Foo() | vim9script
+call Foo() | vimgrep
+call Foo() | vimgrepadd
+call Foo() | visual
+call Foo() | viusage
+call Foo() | view
+call Foo() | vmap
+call Foo() | vmapclear
+call Foo() | vmenu
+call Foo() | vnew
+call Foo() | vnoremap
+call Foo() | vnoremenu
+call Foo() | vsplit
+call Foo() | vunmap
+call Foo() | vunmenu
+call Foo() | windo
+call Foo() | write
+call Foo() | wNext
+call Foo() | wall
+call Foo() | while
+call Foo() | winsize
+call Foo() | wincmd
+call Foo() | winpos
+call Foo() | wnext
+call Foo() | wprevious
+call Foo() | wq
+call Foo() | wqall
+call Foo() | wundo
+call Foo() | wviminfo
+call Foo() | xit
+call Foo() | xall
+call Foo() | xmapclear
+call Foo() | xmap
+call Foo() | xmenu
+call Foo() | xrestore
+call Foo() | xnoremap
+call Foo() | xnoremenu
+call Foo() | xunmap
+call Foo() | xunmenu
+call Foo() | yank
+call Foo() | z
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