runtime(vim): Update base-syntax, fix nested function folding (#14397)

Only match function folding start and end patterns at the start of a
line, excluding heredocs and :append/:change/:insert commands.

Fixes #14393

Signed-off-by: Christian Brabandt <cb@256bit.org>
Signed-off-by: Doug Kearns <dougkearns@gmail.com>

41 files changed, 581 insertions, 77 deletions

diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index f5e2110a29..90e1ee59bb 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 Apr 12
+" Last Change:	   2024 Apr 13
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -191,9 +191,9 @@ syn cluster vimExprList contains=vimEnvvar,vimFunc,vimFuncVar,vimNumber,vimOper,
 "   (buftype != nofile test avoids having append, change, insert show up in the command window)
 " =======================
 if &buftype != 'nofile'
- syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=a\%[ppend]$"		matchgroup=vimCommand end="^\.$""
- syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=c\%[hange]$"		matchgroup=vimCommand end="^\.$""
- syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=i\%[nsert]$"		matchgroup=vimCommand end="^\.$""
+ syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=a\%[ppend]$"		matchgroup=vimCommand end="^\.$" extend
+ syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=c\%[hange]$"		matchgroup=vimCommand end="^\.$" extend
+ syn region vimInsert	matchgroup=vimCommand start="^[: \t]*\(\d\+\(,\d\+\)\=\)\=i\%[nsert]$"		matchgroup=vimCommand end="^\.$" extend
 endif
 
 " Behave! {{{2
@@ -244,12 +244,14 @@ if !exists("g:vimsyn_noerror") && !exists("g:vimsyn_noopererror")
  syn match	vimOperError	")"
 endif
 
-" Functions : Tag is provided for those who wish to highlight tagged functions {{{2
+" Functions: Tag is provided for those who wish to highlight tagged functions {{{2
 " =========
 syn cluster	vimFuncList	contains=vimFuncBang,vimFunctionError,vimFuncKey,vimFuncSID,Tag
 syn cluster	vimDefList	contains=vimFuncBang,vimFunctionError,vimDefKey,vimFuncSID,Tag
-syn cluster	vimFuncBodyList	contains=@vimCmdList,vimCmplxRepeat,vimComment,vimContinue,vimCtrlChar,vimDef,vimEnvvar,vimFBVar,vimFunc,vimFunction,vimFuncVar,vimLetHereDoc,vimLineComment,vimNotation,vimNotFunc,vimNumber,vimOper,vimOperParen,vimRegion,vimRegister,vimSearch,vimSpecFile,vimString,vimSubst
-syn cluster	vimDefBodyList	contains=@vimCmdList,vimCmplxRepeat,vim9Comment,vimContinue,vimCtrlChar,vimDef,vimEnvvar,vimFBVar,vimFunc,vimFunction,vimLetHereDoc,vim9LineComment,vimNotation,vimNotFunc,vimNumber,vimOper,vimOperParen,vimRegion,vimRegister,vimSearch,vimSpecFile,vimString,vimSubst
+
+syn cluster	vimFuncBodyCommon	contains=@vimCmdList,vimCmplxRepeat,vimContinue,vimCtrlChar,vimDef,vimEnvvar,vimFBVar,vimFunc,vimFunction,vimLetHereDoc,vimNotation,vimNotFunc,vimNumber,vimOper,vimOperParen,vimRegister,vimSearch,vimSpecFile,vimString,vimSubst,vimFuncFold
+syn cluster	vimFuncBodyList	contains=@vimFuncBodyCommon,vimComment,vimLineComment,vimFuncVar,vimInsert
+syn cluster	vimDefBodyList	contains=@vimFuncBodyCommon,vim9Comment,vim9LineComment
 
 syn region	vimFuncPattern	contained		matchgroup=vimOper start="/" end="$" contains=@vimSubstList
 syn match	vimFunction	"\<fu\%[nction]\>"	skipwhite nextgroup=vimCmdSep,vimComment,vimFuncPattern contains=vimFuncKey
@@ -284,9 +286,9 @@ syn match	vimEndfunction	"\<endf\%[unction]\>"
 syn match	vimEnddef	"\<enddef\>"
 
 if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
- syn region	vimFuncFold	start="\<fu\%[nction]\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\|{.\{-1,}}\)\+\s*("	end="\<endf\%[unction]\>" contains=vimFunction fold keepend transparent
- syn region	vimFuncFold	start="\<def\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\)\+("		end="\<enddef\>"	        contains=vimDef      fold keepend transparent
- syn region	vimFuncFold	start="\<def\s\+new\i\+("				end="\<enddef\>"	        contains=vimDef      fold keepend transparent
+ syn region	vimFuncFold	start="^\s*:\=\s*fu\%[nction]\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\|{.\{-1,}}\)\+\s*("	end="^\s*:\=\s*endf\%[unction]\>" contains=vimFunction fold keepend extend transparent
+ syn region	vimFuncFold	start="^\s*:\=\s*def\>!\=\s*\%(<[sS][iI][dD]>\|[sg]:\)\=\%(\i\|[#.]\)\+("		end="^\s*:\=\s*enddef\>"          contains=vimDef      fold keepend extend transparent
+ syn region	vimFuncFold	start="^\s*:\=\s*def\s\+new\i\+("					end="^\s*:\=\s*enddef\>"          contains=vimDef      fold keepend extend transparent
 endif
 
 syn match	vimFuncVar   contained	"a:\%(\K\k*\|\d\+\)\>"
@@ -502,7 +504,7 @@ syn keyword	vimUnlet	unl[et]		skipwhite nextgroup=vimUnletBang,vimUnletVars
 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
 
-VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(trim\s\+\%(eval\s\+\)\=\|eval\s\+\%(trim\s\+\)\=\)\=\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\s*\z1\s*$'
+VimFoldh syn region vimLetHereDoc	matchgroup=vimLetHereDocStart start='=<<\s*\%(trim\s\+\%(eval\s\+\)\=\|eval\s\+\%(trim\s\+\)\=\)\=\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\s*\z1\s*$' extend
 syn keyword	vimLet	var		skipwhite nextgroup=vimVar,vimFuncVar,vimLetHereDoc
 
 " For: {{{2
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump
index 4f80331b5c..fa5ed9f5a4 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f|!| |F|o@1|(|)|:| |n|u|m|b|e|r|-@42
 | +0#0000000#ffffff0@74
-@57|1|9|,|1| @9|1|6|%| 
+@57|1|9|,|1| @9|1|2|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump
index bbd362c83d..2cfdcd4eae 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
 |"+0#0000e05&| |s|a|m|e| |n|a|m|e| |a|s| |a|n| |E|x| |c|o|m@1|a|n|d| +0#0000000&@46
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |s|:|l|s|(|)|-@50
-| +0#0000000#ffffff0@56|3|7|,|1| @9|3|4|%| 
+| +0#0000000#ffffff0@56|3|7|,|1| @9|2|7|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.dump
index 7ba9744e8e..6673415128 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |l|i|s|t|<|d|i|c|t|<|n|u|m|b|e|r|>@1|-@31
 | +0#0000000#ffffff0@74
-@57|5@1|,|1| @9|5@1|%| 
+@57|5@1|,|1| @9|4@1|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump
index 66c845b2ba..d2f047b06c 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump
@@ -17,4 +17,4 @@
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
 | +0#0000000#ffffff0@74
 @75
-@57|7|3|,|1| @9|7@1|%| 
+@57|7|3|,|1| @9|6|2|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.dump
index 688b788eb8..e2decdb0a3 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.dump
@@ -15,6 +15,6 @@
 @75
 |++0#0000e05#a8a8a8255|-@1| @1|4| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
 | +0#0000000#ffffff0@74
-|~+0#4040ff13&| @73
-|~| @73
-| +0#0000000&@56|9|1|,|0|-|1| @7|B|o|t| 
+@75
+|"+0#0000e05&| |f|o|l|d|-|r|e|g|i|o|n| |e|n|d|i|n|g| +0#0000000&@54
+@57|9|1|,|0|-|1| @7|8|2|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_06.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_06.dump
index c93c671669..2997eb863a 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_06.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_06.dump
@@ -1,20 +1,20 @@
-| +0&#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
-| +0#0000000#ffffff0@74
-@75
-|"+0#0000e05&| |p|a|r|a|m|e|t|e|r|s| +0#0000000&@62
-> @74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|x|:| |b|o@1|l|,| |y| |=| |4|2|,| |z|:| |s|t|r|i|n|g| |=| |"|z|e|d|"|)|-@17
-| +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|5| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|-@52
 | +0#0000000#ffffff0@74
 @75
 |"+0#0000e05&| |c|o|m@1|e|n|t|s| +0#0000000&@64
 @75
-|++0#0000e05#a8a8a8255|-@1| @1|4| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+>++0#0000e05#a8a8a8255|-@1| @1|4| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+@75
+|"+0#0000e05&| |f|o|l|d|-|r|e|g|i|o|n| |e|n|d|i|n|g| +0#0000000&@54
+@75
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|5| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |:|d|e|f| |F|o@1|(|)|-@50
 | +0#0000000#ffffff0@74
 |~+0#4040ff13&| @73
-|~| @73
-|~| @73
-|~| @73
-| +0#0000000&@56|1|0|9|,|0|-|1| @6|B|o|t| 
+| +0#0000000&@56|1|0|9|,|1| @8|B|o|t| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_07.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_07.dump
new file mode 100644
index 0000000000..b11b61e1c6
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_07.dump
@@ -0,0 +1,20 @@
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|5| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+> +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |:|d|e|f| |F|o@1|(|)|-@50
+| +0#0000000#ffffff0@74
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|1|2|7|,|0|-|1| @6|B|o|t| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump b/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump
index f9e9ae099e..3020a24ad1 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump
@@ -1,20 +1,20 @@
 | +0&#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
-| +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
-| +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
-| +0#0000000#ffffff0@74
-@75
-|"+0#0000e05&| |p|a|r|a|m|e|t|e|r|s| +0#0000000&@62
-@75
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|x|:| |b|o@1|l|,| |y| |=| |4|2|,| |z|:| |s|t|r|i|n|g| |=| |"|z|e|d|"|)|-@17
-| +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|5| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|-@52
 | +0#0000000#ffffff0@74
 @75
 |"+0#0000e05&| |c|o|m@1|e|n|t|s| +0#0000000&@64
 @75
 |++0#0000e05#a8a8a8255|-@1| @1|4| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+@75
+|"+0#0000e05&| |f|o|l|d|-|r|e|g|i|o|n| |e|n|d|i|n|g| +0#0000000&@54
+@75
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|5| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |:|d|e|f| |F|o@1|(|)|-@50
 > +0#0000000#ffffff0@74
-@57|1@1|0|,|0|-|1| @6|B|o|t| 
+@57|1|3|0|,|0|-|1| @6|B|o|t| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_nested_00.dump b/runtime/syntax/testdir/dumps/vim_ex_def_nested_00.dump
new file mode 100644
index 0000000000..9f6d437445
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_nested_00.dump
@@ -0,0 +1,20 @@
+>v+0#af5f00255#ffffff0|i|m|9|s|c|r|i|p|t| +0#0000000&@64
+|#+0#0000e05&| |V|i|m|9| |:|d|e|f| |c|o|m@1|a|n|d| |(|n|e|s|t|e|d|)| +0#0000000&@46
+@75
+|c+0#af5f00255&|l|a|s@1| +0#0000000&|T|e|s|t| @64
+@4|c+0#af5f00255&|o|n|s|t| +0#0000000&|n+0#00e0e07&|a|m|e|:+0#0000000&| |s|t|r|i|n|g| @52
+@75
+@4|d+0#af5f00255&|e|f| +0#0000000&|n|e|w|(+0#e000e06&|)| +0#0000000&@61
+@8|d+0#af5f00255&|e|f| +0#0000000&|N|a|m|e|(+0#e000e06&|)|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&@48
+@12|f+0#af5f00255&|u|n|c|t|i|o|n| +0#0000000&|G|i|v|e|N|a|m|e|(+0#e000e06&|)| +0#0000000&@43
+@16|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|"+0#e000002&|a|n|y|"| +0#0000000&@46
+@12|e+0#af5f00255&|n|d|f|u|n|c|t|i|o|n| +0#0000000&@51
+@75
+@12|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|G|i|v|e|N|a|m|e|(+0#e000e06&|)| +0#0000000&@45
+@8|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@60
+@75
+@8|t+0#af5f00255&|h|i|s|.|n+0#0000000&|a|m|e| |=+0#af5f00255&| +0#0000000&|N|a|m|e|(+0#e000e06&|)| +0#0000000&@48
+@4|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@64
+|e+0#af5f00255&|n|d|c|l|a|s@1| +0#0000000&@66
+@75
+@57|1|,|1| @10|T|o|p| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_nested_99.dump b/runtime/syntax/testdir/dumps/vim_ex_def_nested_99.dump
new file mode 100644
index 0000000000..15c078a5fb
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_nested_99.dump
@@ -0,0 +1,20 @@
+|#+0#0000e05#ffffff0| |V|i|m|9| |:|d|e|f| |c|o|m@1|a|n|d| |(|n|e|s|t|e|d|)| +0#0000000&@46
+@75
+|c+0#af5f00255&|l|a|s@1| +0#0000000&|T|e|s|t| @64
+@4|c+0#af5f00255&|o|n|s|t| +0#0000000&|n+0#00e0e07&|a|m|e|:+0#0000000&| |s|t|r|i|n|g| @52
+@75
+@4|d+0#af5f00255&|e|f| +0#0000000&|n|e|w|(+0#e000e06&|)| +0#0000000&@61
+@8|d+0#af5f00255&|e|f| +0#0000000&|N|a|m|e|(+0#e000e06&|)|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&@48
+@12|f+0#af5f00255&|u|n|c|t|i|o|n| +0#0000000&|G|i|v|e|N|a|m|e|(+0#e000e06&|)| +0#0000000&@43
+@16|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|"+0#e000002&|a|n|y|"| +0#0000000&@46
+@12|e+0#af5f00255&|n|d|f|u|n|c|t|i|o|n| +0#0000000&@51
+@75
+@12|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|G|i|v|e|N|a|m|e|(+0#e000e06&|)| +0#0000000&@45
+@8|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@60
+@75
+@8|t+0#af5f00255&|h|i|s|.|n+0#0000000&|a|m|e| |=+0#af5f00255&| +0#0000000&|N|a|m|e|(+0#e000e06&|)| +0#0000000&@48
+@4|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@64
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_00.dump b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_00.dump
new file mode 100644
index 0000000000..3bcaccc3d1
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_00.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_01.dump b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_01.dump
new file mode 100644
index 0000000000..c1f9fa892b
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_01.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_99.dump b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_99.dump
new file mode 100644
index 0000000000..84a08f866e
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_nested_fold_99.dump
@@ -0,0 +1,20 @@
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+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |l|e|t| |g|:|v|i|m|s|y|n|_|f|o|l|d|i|n|g| |=| |'|f|'| +0#0000000&@29
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+|++0#0000e05#a8a8a8255| |+|-@1| |1@1| |l|i|n|e|s|:| |d|e|f| |n|e|w|(|)|-@49
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+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
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+|~+0#4040ff13&| @73
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+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|2@1|,|1| @9|A|l@1| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_01.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_01.dump
index 461531d1be..9034e28a03 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_01.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
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 | +0#0000000#ffffff0@74
-@57|1|9|,|1| @10|8|%| 
+@57|1|9|,|1| @10|6|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_02.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_02.dump
index 3a64c7f121..17e220f4a2 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_02.dump
@@ -17,4 +17,4 @@
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |f|u|n|c|t|i|o|n| |g|:|F|o@1|(|)|-@44
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 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |f|u|n|c|t|i|o|n| |s|:|F|o@1|(|)|-@44
-| +0#0000000#ffffff0@56|3|7|,|1| @9|1|8|%| 
+| +0#0000000#ffffff0@56|3|7|,|1| @9|1|4|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_03.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_03.dump
index 3f26306d7b..b229e6c9a3 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_03.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
 @75
 |"+0#0000e05&| |m|o|d|i|f|i|e|r|s| +0#0000000&@63
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_04.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_04.dump
index 52423a2a26..d9aa1c9f3f 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_04.dump
@@ -17,4 +17,4 @@
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |f|u|n|c|t|i|o|n| |F|o@1|(|)| |a|b|o|r|t|-@40
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-| +0#0000000#ffffff0@56|7|3|,|1| @9|4|1|%| 
+| +0#0000000#ffffff0@56|7|3|,|1| @9|3|2|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_05.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_05.dump
index d2acafc463..989c504e8b 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_05.dump
@@ -17,4 +17,4 @@
 | +0#0000000#ffffff0@74
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 | +0#0000000#ffffff0@74
-@57|9|1|,|1| @9|5|4|%| 
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_06.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_06.dump
index 354af8ebb5..f6619c255e 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_06.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_06.dump
@@ -17,4 +17,4 @@
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-| +0#0000000#ffffff0@56|1|0|9|,|1| @8|6|7|%| 
+| +0#0000000#ffffff0@56|1|0|9|,|1| @8|5|2|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_07.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_07.dump
index fc403c59b5..8e84214097 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_07.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_07.dump
@@ -17,4 +17,4 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_08.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_08.dump
index 4d519d0102..fb482ff925 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_08.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_08.dump
@@ -17,4 +17,4 @@
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 @75
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_09.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_09.dump
index 8ecc529690..4b6a2d2cd0 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_function_fold_09.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_09.dump
@@ -17,4 +17,4 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_10.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_10.dump
new file mode 100644
index 0000000000..2e986c456c
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_10.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_function_fold_11.dump b/runtime/syntax/testdir/dumps/vim_ex_function_fold_11.dump
new file mode 100644
index 0000000000..174e250b59
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_function_fold_11.dump
@@ -0,0 +1,20 @@
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