runtime(vim): Update base-syntax, improve :let-heredoc highlighting
The end marker is not required to match the indent of :let when "trim"
is specified, it may also appear without leading whitespace as normal.
closes: #15564
Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 169fe20..4c91df4 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 Aug 21
+" Last Change: 2024 Aug 23
" Former Maintainer: Charles E. Campbell
" DO NOT CHANGE DIRECTLY.
@@ -526,9 +526,9 @@
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='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\z2$' extend
+VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\=\z2$' extend
VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='=<<\%(\s*\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1$' extend
-VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\z2$' contains=@vimStringInterpolation extend
+VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\=\z2$' contains=@vimStringInterpolation extend
VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='=<<\s*eval\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1$' contains=@vimStringInterpolation extend
Vim9 syn keyword vim9Const const skipwhite nextgroup=vim9Variable,vim9VariableList
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_00.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_00.dump
index 2e3d0e6..d7bfb6b 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_00.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_00.dump
@@ -13,8 +13,8 @@
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |t|r|i|m| +0#0000000&@66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|1| +0#0000000&@65
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|2| +0#0000000&@65
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
@57|1|,|1| @10|T|o|p|
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump
index 6e38ae7..623dc27 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump
@@ -1,9 +1,12 @@
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |t|r|i|m| +0#0000000&@66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| >l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|1| +0#0000000&@65
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|2| +0#0000000&@65
-||+0#0000e05#a8a8a8255| >E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@50
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|1| +0#0000000&@63
@@ -14,7 +17,4 @@
| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |i|n|t|e|r|p|o|l|a|t|i|o|n| +0#0000000&@57
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@52
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|0+0#e000002&|}+0#e000e06&| +0#0000000&@61
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +0#0000000&@61
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-@57|1|9|,|1| @9|1|3|%|
+@57|1|9|,|1| @10|7|%|
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump
index 3613d10..9135666 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump
@@ -1,9 +1,12 @@
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@50
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@52
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|0+0#e000002&|}+0#e000e06&| +0#0000000&@61
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +0#0000000&@61
-||+0#0000e05#a8a8a8255| >E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1>l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|0+0#e000002&|}+0#e000e06&| +0#0000000&@61
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +0#0000000&@61
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |e|v|a|l| |E|N|D| +0#0000000&@47
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|0+0#e000002&|}+0#e000e06&| +0#0000000&@59
@@ -14,7 +17,4 @@
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|0+0#e000002&|}+0#e000e06&| +0#0000000&@57
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +0#0000000&@57
||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |n|o| |i|n|t|e|r|p|o|l|a|t|i|o|n| |(|e|s|c|a|p|e|d| |{| |a|n|d| |}|)| +0#0000000&@36
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-@57|3|7|,|1| @9|3|1|%|
+@57|3|7|,|3| @9|1|7|%|
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump
index de3f8fe..4bd2857 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump
@@ -1,9 +1,12 @@
+||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |n|o| |i|n|t|e|r|p|o|l|a|t|i|o|n| |(|e|s|c|a|p|e|d| |{| |a|n|d| |}|)| +0#0000000&@36
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@52
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@59
+||+0#0000e05#a8a8a8255| >l+0#e000002#ffffff0|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@59
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |1|}+0#e000e06&@1| +0#0000000&@59
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |e|v|a|l| |E|N|D| +0#0000000&@50
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@59
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |1|}+0#e000e06&@1| +0#0000000&@59
@@ -14,7 +17,4 @@
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |1|}+0#e000e06&@1| +0#0000000&@57
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |e|v|a|l| |E|N|D| +0#0000000&@45
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@55
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |1|}+0#e000e06&@1| +0#0000000&@55
-@57|5@1|,|0|-|1| @7|5|0|%|
+@57|5@1|,|1| @9|2|7|%|
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump
index c6d1b4d..b763e64 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump
@@ -1,9 +1,12 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |e|v|a|l| |E|N|D| +0#0000000&@45
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@55
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{+0#e000e06&@1|1+0#e000002&| |+| |1|}+0#e000e06&@1| +0#0000000&@55
||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |n|o| |i|n|t|e|r|p|o|l|a|t|i|o|n| +0#0000000&@54
-| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@57
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{|1| |+| |0|}| +0#0000000&@61
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{|1| |+| |1|}| +0#0000000&@61
@@ -14,7 +17,4 @@
||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|{|1| |+| |1|}| +0#0000000&@61
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{|1| |+| |0|}| +0#0000000&@59
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{|1| |+| |1|}| +0#0000000&@59
-@57|7|3|,|0|-|1| @7|6|9|%|
+@57|7|3|,|0|-|1| @7|3|7|%|
diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump
index e66d1cc..e7b8a55 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump
@@ -1,9 +1,12 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{|1| |+| |0|}| +0#0000000&@59
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{|1| |+| |1|}| +0#0000000&@59
||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@50
||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|{|1| |+| |0|}| +0#0000000&@57
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3>l|i|n|e|{|1| |+| |1|}| +0#0000000&@57
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| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
@@ -14,7 +17,4 @@
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| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
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-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0|E|N|D| | +0#0000000&@67
-@57|9|1|,|5| @9|8|7|%|
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump
index e3c4ca4..6ed3eb5 100644
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump
@@ -1,9 +1,12 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"| |E|N|D| |"|]|)| +0#0000000&@42
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||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0|E|N|D| | +0#0000000&@67
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-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1>E|N|D| | +0#0000000&@66
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| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
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@@ -11,10 +14,7 @@
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+| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_07.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_07.dump
new file mode 100644
index 0000000..85bb2f3
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_07.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_08.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_08.dump
new file mode 100644
index 0000000..16149fe
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_08.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_09.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_09.dump
new file mode 100644
index 0000000..fbb7d9d
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_09.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_10.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_10.dump
new file mode 100644
index 0000000..93db587
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_10.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_11.dump b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_11.dump
new file mode 100644
index 0000000..f63b3b6
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_11.dump
@@ -0,0 +1,20 @@
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+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
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+|~| @73
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+| +0#0000000&@56|1|9|6|,|0|-|1| @6|B|o|t|
diff --git a/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim b/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim
index da9adff..2f88f93 100644
--- a/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim
+++ b/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim
@@ -13,6 +13,9 @@
line2
END
+
+" trim
+
let foo =<< trim END
line1
line2
@@ -114,3 +117,80 @@
END
END
+
+" end marker must be vertically aligned with :let (if preceded by whitespace)
+
+" assert_equal(foo, ["END"])
+let foo =<< trim END
+ END
+END
+
+ " assert_equal(foo, ["END"])
+ let foo =<< trim END
+ END
+ END
+
+" assert_equal(foo, ["END "])
+let foo =<< trim END
+END
+END
+
+ " assert_equal(foo, ["END"])
+ let foo =<< trim END
+ END
+ END
+
+ " assert_equal(foo, ["END "])
+ let foo =<< trim END
+ END
+ END
+
+ " assert_equal(foo, ["END"])
+ let foo =<< trim END
+ END
+ END
+
+ " assert_equal(foo, ["END "])
+ let foo =<< trim END
+ END
+ END
+
+ " assert_equal(foo, ["END "])
+ let foo =<< trim END
+END
+END
+
+ " assert_equal(foo, ["END"])
+ let foo =<< trim END
+ END
+END
+
+ " assert_equal(foo, ["END"])
+ let foo =<< trim END
+ END
+END
+
+
+" end markers
+
+let foo =<< !@#$%^&*()_+
+line1
+line2
+!@#$%^&*()_+
+
+let foo =<< 0!@#$%^&*()_+
+line1
+line2
+0!@#$%^&*()_+
+
+let foo =<< A!@#$%^&*()_+
+line1
+line2
+A!@#$%^&*()_+
+
+" error - leading lowercase character
+let foo =<< a!@#$%^&*()_+
+line1
+line2
+a!@#$%^&*()_+
+
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 1ae39cf..323aa7c 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -3,7 +3,7 @@
" Maintainer: Hirohito Higashi <h.east.727 ATMARK gmail.com>
" Doug Kearns <dougkearns@gmail.com>
" URL: https://github.com/vim-jp/syntax-vim-ex
-" Last Change: 2024 Aug 21
+" Last Change: 2024 Aug 23
" Former Maintainer: Charles E. Campbell
" DO NOT CHANGE DIRECTLY.
@@ -565,9 +565,9 @@
syn match vimUnletBang contained "!" skipwhite nextgroup=vimUnletVars
syn region vimUnletVars contained start="$\I\|\h" skip="\n\s*\\" end="$" end="|" contains=vimVar,vimEnvvar,vimContinue,vimString,vimNumber
-VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\z2$' extend
+VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*trim\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\=\z2$' extend
VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='=<<\%(\s*\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1$' extend
-VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\z2$' contains=@vimStringInterpolation extend
+VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='\%(^\z(\s*\)\S.*\)\@<==<<\s*\%(trim\s\+eval\|eval\s\+trim\)\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1\=\z2$' contains=@vimStringInterpolation extend
VimFoldh syn region vimLetHereDoc matchgroup=vimLetHereDocStart start='=<<\s*eval\%(\s\+\)\@>\z(\L\S*\)' matchgroup=vimLetHereDocStop end='^\z1$' contains=@vimStringInterpolation extend
Vim9 syn keyword vim9Const const skipwhite nextgroup=vim9Variable,vim9VariableList