diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 0f8ab0a..9ab923c 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 Mar 31
+" Last Change:	   2024 Apr 09
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -277,8 +277,8 @@
 
 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\|[#.]\|{.\{-1,}}\)\+("	end="\<enddef\>"	        contains=vimDef      fold keepend transparent
- syn region	vimFuncFold	start="\<def\s\+new\%(\i\|{.\{-1,}}\)\+("			end="\<enddef\>"	        contains=vimDef      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
 endif
 
 syn match	vimFuncVar   contained	"a:\%(\K\k*\|\d\+\)\>"
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_01.dump b/runtime/syntax/testdir/dumps/vim_ex_def_01.dump
index c7b49de..2aebd40 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_01.dump
@@ -6,15 +6,15 @@
 >d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|#+0#0000e05&| |c|u|r|l|y|-|b|r|a|c|e| |n|a|m|e|s| +0#0000000&@55
-|d+0#af5f00255&|e|f| +0#0000000&|{|"|F|"|}|o@1|(+0#e000e06&|)| +0#0000000&@61
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@57
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|F|{|"|o|"|}|o|(+0#e000e06&|)| +0#0000000&@61
+|"+0#0000e05&| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@53
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@57
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o|{|"|o|"|}|(+0#e000e06&|)| +0#0000000&@61
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@55
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|{|"|F|"|}|o|{|"|o|"|}|(+0#e000e06&|)| +0#0000000&@57
-@57|1|9|,|1| @9|1|2|%| 
+@57|1|9|,|1| @9|1|4|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_02.dump b/runtime/syntax/testdir/dumps/vim_ex_def_02.dump
index 7ebe3c6..ebfa3e1 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_02.dump
@@ -1,20 +1,20 @@
-|d+0#af5f00255#ffffff0|e|f| +0#0000000&|{|"|F|"|}|o|{|"|o|"|}|(+0#e000e06&|)| +0#0000000&@57
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|{|"|F|"|}|{|"|o|"|}|{|"|o|"|}|(+0#e000e06&|)| +0#0000000&@53
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-> @74
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@57
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|#+0#0000e05&| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@53
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@57
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@55
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+|e+0#af5f00255#ffffff0|n|d@1|e|f| +0#0000000&@68
 @75
 |d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@47
-@57|3|7|,|0|-|1| @7|2|9|%| 
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+> @74
+|d+0#af5f00255&|e|f|!| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@56
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|g+0#e000e06&|:|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@55
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|s+0#e000e06&|:|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@55
+@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|<+0#e000e06&|S|I|D|>|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@52
+@57|3|7|,|0|-|1| @7|3|4|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_03.dump b/runtime/syntax/testdir/dumps/vim_ex_def_03.dump
index 50fed41..6046e65 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_03.dump
@@ -1,20 +1,20 @@
-|d+0#af5f00255#ffffff0|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@47
+|d+0#af5f00255#ffffff0|e|f| +0#0000000&|<+0#e000e06&|S|I|D|>|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@52
 @2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f|!| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@56
+|d+0#af5f00255&|e|f| +0#0000000&|f|o@1|#|b|a|r|#|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@49
 @2>r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|g+0#e000e06&|:|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@55
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|"+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
+|d+0#af5f00255&|e|f| +0#0000000&|s+0#e000e06&|:|l+0#0000000&|s|(+0#e000e06&|)| +0#0000000&@64
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|s+0#e000e06&|:|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@55
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+@75
+|"+0#0000e05&| |r|e|t|u|r|n| |t|y|p|e|s| +0#0000000&@60
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |v+0#00e0003&|o|i|d| +0#0000000&@59
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|<+0#e000e06&|S|I|D|>|F+0#0000000&|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@52
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@57|5@1|,|3| @9|4|6|%| 
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |v+0#00e0003&|o|i|d| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@49
+@57|5@1|,|3| @9|5|4|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_04.dump b/runtime/syntax/testdir/dumps/vim_ex_def_04.dump
index 64141b7..7394771 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_04.dump
@@ -1,20 +1,20 @@
-|e+0#af5f00255#ffffff0|n|d@1|e|f| +0#0000000&@68
+|d+0#af5f00255#ffffff0|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |v+0#00e0003&|o|i|d| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@49
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|f|o@1|#|b|a|r|#|F|o@1|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@49
-@2|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|4+0#e000002&|2| +0#0000000&@63
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |l+0#00e0003&|i|s|t|<|d|i|c|t|<|n|u|m|b|e|r|>@1| +0#0000000&@45
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 > @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
-|d+0#af5f00255&|e|f| +0#0000000&|s+0#e000e06&|:|l+0#0000000&|s|(+0#e000e06&|)| +0#0000000&@64
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |f+0#00e0003&|u|n|c|(|d|i|c|t|<|l|i|s|t|<|n|u|m|b|e|r|>@1|,+0#0000000&| |f+0#00e0003&|u|n|c|,+0#0000000&| |b+0#00e0003&|o@1|l|,+0#0000000&| |f+0#00e0003&|u|n|c|(|n|u|m|b|e|r|,+0#0000000&| |l+0#00e0003&|i|s|t|<|n|u|m|b|e|r|>|)@1
+|:+0#0000000&| |b+0#00e0003&|o@1|l| +0#0000000&@68
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
 @75
-|"+0#0000e05&| |r|e|t|u|r|n| |t|y|p|e|s| +0#0000000&@60
+|"+0#0000e05&| |:|e|n|d@1|e|f| |t|r|a|i|l|i|n|g| +0#0000000&@56
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |v+0#00e0003&|o|i|d| +0#0000000&@59
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
+| +0#0000e05&@1|#| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@51
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 @75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |v+0#00e0003&|o|i|d| +0#0000000&|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@49
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-@57|7|3|,|0|-|1| @7|6|3|%| 
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&||| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|F|o@1|"| +0#0000000&@55
+@57|7|3|,|0|-|1| @7|7|3|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_05.dump b/runtime/syntax/testdir/dumps/vim_ex_def_05.dump
index 9fc0cfa..2db207b 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_05.dump
@@ -1,20 +1,20 @@
-|d+0#af5f00255#ffffff0|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |l+0#00e0003&|i|s|t|<|d|i|c|t|<|n|u|m|b|e|r|>@1| +0#0000000&@45
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)|:+0#0000000&| |f+0#00e0003&|u|n|c|(|d|i|c|t|<|l|i|s|t|<|n|u|m|b|e|r|>@1|,+0#0000000&| |f+0#00e0003&|u|n|c|,+0#0000000&| |b+0#00e0003&|o@1|l|,+0#0000000&| |f+0#00e0003&|u|n|c|(|n|u|m|b|e|r|,+0#0000000&| |l+0#00e0003&|i|s|t|<|n|u|m|b|e|r|>|)@1
-|:+0#0000000&| |b+0#00e0003&|o@1|l| +0#0000000&@68
->e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-@75
-|"+0#0000e05&| |:|e|n|d@1|e|f| |t|r|a|i|l|i|n|g| +0#0000000&@56
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
-| +0#0000e05&@1|#| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@51
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
-@75
-|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
-|e+0#af5f00255&|n|d@1|e|f| +0#0000000&||| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|F|o@1|"| +0#0000000&@55
-@75
+| +0&#ffffff0@74
 |d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|)| +0#0000000&@65
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&|"+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@58
-@57|9|1|,|1| @9|8|0|%| 
+@75
+@75
+>"+0#0000e05&| |p|a|r|a|m|e|t|e|r|s| +0#0000000&@62
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&|x+0#00e0e07&|:+0#0000000&| |b+0#00e0003&|o@1|l|,+0#0000000&| |y+0#00e0e07&| +0#0000000&|=+0#af5f00255&| +0#0000000&|4+0#e000002&|2|,+0#0000000&| |z+0#00e0e07&|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&|=+0#af5f00255&| +0#0000000&|"+0#e000002&|z|e|d|"|)+0#e000e06&| +0#0000000&@31
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+@75
+|d+0#af5f00255&|e|f| +0#0000000&|F|o@1|(+0#e000e06&| +0#0000000&@66
+@4|x+0#00e0e07&|:+0#0000000&| |b+0#00e0003&|o@1|l|,+0#0000000&| @62
+@4|y+0#00e0e07&| +0#0000000&|=+0#af5f00255&| +0#0000000&|4+0#e000002&|2|,+0#0000000&| @63
+@4|z+0#00e0e07&|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&|=+0#af5f00255&| +0#0000000&|"+0#e000002&|z|e|d|"|)+0#e000e06&| +0#0000000&@52
+|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
+@75
+@75
+|"+0#0000e05&| |c|o|m@1|e|n|t|s| +0#0000000&@64
+@75
+@57|9|1|,|1| @9|9|4|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_def_99.dump b/runtime/syntax/testdir/dumps/vim_ex_def_99.dump
index 2eca72a..9b4249f 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_99.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_99.dump
@@ -17,4 +17,4 @@
 @2|"+0#e000002&|u|s|e|l|e|s@1| |s|t|r|i|n|g|"| +0#0000000&@56
 |e+0#af5f00255&|n|d@1|e|f| +0#0000000&@68
 > @74
-@57|1|2|5|,|0|-|1| @6|B|o|t| 
+@57|1|0|9|,|0|-|1| @6|B|o|t| 
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 d1803d5..4f80331 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_01.dump
@@ -6,15 +6,15 @@
 >"+0#0000e05&| |e|m|p|t|y| |d|e|f|i|n|i|t|i|o|n| +0#0000000&@56
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
 | +0#0000000#ffffff0@74
-|#+0#0000e05&| |c|u|r|l|y|-|b|r|a|c|e| |n|a|m|e|s| +0#0000000&@55
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |{|"|F|"|}|o@1|(|)|-@47
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |n|u|m|b|e|r|-@43
 | +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|{|"|o|"|}|o|(|)|-@47
+|"+0#0000e05&| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@53
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |n|u|m|b|e|r| @1|-@41
 | +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o|{|"|o|"|}|(|)|-@47
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)| |#| |c|o|m@1|e|n|t|-@41
 | +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |{|"|F|"|}|o|{|"|o|"|}|(|)|-@43
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |n|u|m|b|e|r| |#| |c|o|m@1|e|n|t|-@33
 | +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |{|"|F|"|}|{|"|o|"|}|{|"|o|"|}|(|)|-@39
+|++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|2|%| 
+@57|1|9|,|1| @9|1|6|%| 
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 d9668cd..bbd362c 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_02.dump
@@ -1,20 +1,20 @@
-| +0&#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o|{|"|o|"|}|(|)|-@47
-| +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |{|"|F|"|}|o|{|"|o|"|}|(|)|-@43
-| +0#0000000#ffffff0@74
->++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |{|"|F|"|}|{|"|o|"|}|{|"|o|"|}|(|)|-@39
-| +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|-@43
-| +0#0000000#ffffff0@74
-|#+0#0000e05&| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@53
+|"+0#0000e05#ffffff0| |t|r|a|i|l|i|n|g| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@53
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |n|u|m|b|e|r| @1|-@41
 | +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)| |#| |c|o|m@1|e|n|t|-@41
 | +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| |#| |c|o|m@1|e|n|t|-@33
+>++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |n|u|m|b|e|r| |#| |c|o|m@1|e|n|t|-@33
 | +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
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |g|:|F|o@1|(|)|:| |n|u|m|b|e|r|-@41
-| +0#0000000#ffffff0@56|3|7|,|1| @9|3|0|%| 
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |s|:|F|o@1|(|)|:| |n|u|m|b|e|r|-@41
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |<|S|I|D|>|F|o@1|(|)|:| |n|u|m|b|e|r|-@38
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |f|o@1|#|b|a|r|#|F|o@1|(|)|:| |n|u|m|b|e|r|-@35
+| +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|%| 
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 d20fb79..7ba9744 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_03.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|(|)| |#| |c|o|m@1|e|n|t|-@41
-| +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| |#| |c|o|m@1|e|n|t|-@33
-| +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
-|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |g|:|F|o@1|(|)|:| |n|u|m|b|e|r|-@41
-| +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |s|:|F|o@1|(|)|:| |n|u|m|b|e|r|-@41
 | +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |<|S|I|D|>|F|o@1|(|)|:| |n|u|m|b|e|r|-@38
 | +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |f|o@1|#|b|a|r|#|F|o@1|(|)|:| |n|u|m|b|e|r|-@35
+>++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |f|o@1|#|b|a|r|#|F|o@1|(|)|:| |n|u|m|b|e|r|-@35
 | +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@74
 @75
-@57|5@1|,|1| @9|4|9|%| 
+|"+0#0000e05&| |r|e|t|u|r|n| |t|y|p|e|s| +0#0000000&@60
+@75
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |v|o|i|d|-@45
+| +0#0000000#ffffff0@74
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |v|o|i|d| |#| |c|o|m@1|e|n|t|-@35
+| +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|%| 
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 bc95a8b..66c845b 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_04.dump
@@ -1,20 +1,20 @@
 | +0&#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |s|:|F|o@1|(|)|:| |n|u|m|b|e|r|-@41
-| +0#0000000#ffffff0@74
-|++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |<|S|I|D|>|F|o@1|(|)|:| |n|u|m|b|e|r|-@38
-| +0#0000000#ffffff0@74
->++0#0000e05#a8a8a8255|-@1| @1|3| |l|i|n|e|s|:| |d|e|f| |f|o@1|#|b|a|r|#|F|o@1|(|)|:| |n|u|m|b|e|r|-@35
-| +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@74
-@75
-|"+0#0000e05&| |r|e|t|u|r|n| |t|y|p|e|s| +0#0000000&@60
-@75
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |v|o|i|d|-@45
 | +0#0000000#ffffff0@74
 |++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |v|o|i|d| |#| |c|o|m@1|e|n|t|-@35
 | +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#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|7|3|,|1| @9|6|2|%| 
+|++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |f|u|n|c|(|d|i|c|t|<|l|i|s|t|<|n|u|m|b|e|r|>@1|,| |f|u|n|c|,| |b|o@1|l|,| |f|u|n|c|(|n|u|m|b|e|r|,| 
+| +0#0000000#ffffff0@74
+@75
+|"+0#0000e05&| |:|e|n|d@1|e|f| |t|r|a|i|l|i|n|g| +0#0000000&@56
+@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|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
+@57|7|3|,|1| @9|7@1|%| 
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 cc31e3d..688b788 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_05.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|(|)|:| |v|o|i|d| |#| |c|o|m@1|e|n|t|-@35
-| +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
->++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|:| |f|u|n|c|(|d|i|c|t|<|l|i|s|t|<|n|u|m|b|e|r|>@1|,| |f|u|n|c|,| |b|o@1|l|,| |f|u|n|c|(|n|u|m|b|e|r|,| 
-| +0#0000000#ffffff0@74
-@75
-|"+0#0000e05&| |:|e|n|d@1|e|f| |t|r|a|i|l|i|n|g| +0#0000000&@56
-@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|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
+> @74
 |"+0#0000e05&| |p|a|r|a|m|e|t|e|r|s| +0#0000000&@62
 @75
-@57|9|1|,|1| @9|8|3|%| 
+|++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
+|~+0#4040ff13&| @73
+|~| @73
+| +0#0000000&@56|9|1|,|0|-|1| @7|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 0b4fce2..f9e9ae0 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_def_fold_99.dump
@@ -17,4 +17,4 @@
 @75
 |++0#0000e05#a8a8a8255|-@1| @1|4| |l|i|n|e|s|:| |d|e|f| |F|o@1|(|)|-@51
 > +0#0000000#ffffff0@74
-@57|1|2|6|,|0|-|1| @6|B|o|t| 
+@57|1@1|0|,|0|-|1| @6|B|o|t| 
diff --git a/runtime/syntax/testdir/input/vim_ex_def.vim b/runtime/syntax/testdir/input/vim_ex_def.vim
index dd4ecd1..2685ba5 100644
--- a/runtime/syntax/testdir/input/vim_ex_def.vim
+++ b/runtime/syntax/testdir/input/vim_ex_def.vim
@@ -19,27 +19,11 @@
 def Foo()
 enddef
 
-# curly-brace names
-def {"F"}oo()
-enddef
-
-def F{"o"}o()
-enddef
-
-def Fo{"o"}()
-enddef
-
-def {"F"}o{"o"}()
-enddef
-
-def {"F"}{"o"}{"o"}()
-enddef
-
 def Foo(): number
   return 42
 enddef
 
-# trailing whitespace
+" trailing whitespace
 def Foo(): number  
   return 42
 enddef
diff --git a/runtime/syntax/testdir/input/vim_ex_def_fold.vim b/runtime/syntax/testdir/input/vim_ex_def_fold.vim
index 7ab3e3f..865fc5a 100644
--- a/runtime/syntax/testdir/input/vim_ex_def_fold.vim
+++ b/runtime/syntax/testdir/input/vim_ex_def_fold.vim
@@ -20,27 +20,11 @@
 def Foo()
 enddef
 
-# curly-brace names
-def {"F"}oo()
-enddef
-
-def F{"o"}o()
-enddef
-
-def Fo{"o"}()
-enddef
-
-def {"F"}o{"o"}()
-enddef
-
-def {"F"}{"o"}{"o"}()
-enddef
-
 def Foo(): number
   return 42
 enddef
 
-# trailing whitespace
+" trailing whitespace
 def Foo(): number  
   return 42
 enddef
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 21122f9..cfb94ae 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 Apr 07
+" Last Change:	   2024 Apr 09
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -314,8 +314,8 @@
 
 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\|[#.]\|{.\{-1,}}\)\+("	end="\<enddef\>"	        contains=vimDef      fold keepend transparent
- syn region	vimFuncFold	start="\<def\s\+new\%(\i\|{.\{-1,}}\)\+("			end="\<enddef\>"	        contains=vimDef      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
 endif
 
 syn match	vimFuncVar   contained	"a:\%(\K\k*\|\d\+\)\>"