runtime(vim): Update base-syntax, contain let-heredocs

Limit heredoc matches to assignment statements. Matching these at the top level is very slow. closes: #17473 Signed-off-by: Doug Kearns <dougkearns@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
2025-06-10 21:02:43 +02:00
parent 138fb951e0
commit 274efcc7e6
37 changed files with 1099 additions and 221 deletions
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_00.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_00.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1>v+0#af5f00255#ffffff0|i|m|9|s|c|r|i|p|t| +0#0000000&@62
+| +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| |=| |"+0#e000002&|h|"| +0#0000000&@29
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |s|e|t|l| |f|d|c|=|2| |f|d|l|=|9@1| |f|d|m|=|s|y|n|t|a|x| +0#0000000&@27
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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#0000000&@67
+||+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| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@55
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+@57|1|,|1| @10|T|o|p| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_01.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_01.dump
@ -0,0 +1,20 @@
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| >E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|v+0#af5f00255#ffffff0|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @63
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@5|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@52
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @61
+@57|1|9|,|1| @10|4|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_02.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_02.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @61
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |a|s@1|i|g|n|m|e|n|t| +0#0000000&@60
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |f+0#00e0e07#ffffff0|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@61
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| | +0#0000000#ffffff0| +0#00e0e07&|f|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@59
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| |g+0#00e0e07#ffffff0|:|f|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@59
+@57|3|7|,|0|-|1| @7|1@1|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_03.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_03.dump
@ -0,0 +1,20 @@
+|-+0#0000e05#a8a8a8255| |g+0#00e0e07#ffffff0|:|f|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@59
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| | +0#0000000#ffffff0| +0#00e0e07&>g|:|f|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#0000000&@67
+||+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| |[+0#0000000#ffffff0|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@54
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@52
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+@57|5@1|,|3| @9|1|7|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_04.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_04.dump
@ -0,0 +1,20 @@
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|[+0#0000000#ffffff0|f+0#00e0e07&|o@1|,+0#0000000&| @67
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@5|\| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@52
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| >l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|[|f+0#00e0e07&|o@1|,+0#0000000&| @65
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|\| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |[+0#0000000#ffffff0|g+0#00e0e07&|:|f|o@1|,+0#0000000&| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|7|3|,|1| @9|2|4|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_05.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_05.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|[+0#0000000#ffffff0|g+0#00e0e07&|:|f|o@1|,+0#0000000&| @65
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@5|\| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| @63
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|\| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|9|1|,|0|-|1| @7|3|0|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_06.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_06.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |t|y|p|e|d| +0#0000000&@65
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1|:+0#0000000&| |l+0#00e0003&|i|s|t|<|s|t|r|i|n|g|>| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@43
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|[|f+0#00e0e07&|o@1|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g|,+0#0000000&| |b+0#00e0e07&|a|r|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g|]+0#0000000&| |=+0#e000e06&|<@1| |E|N|D| +0#0000000&@34
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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&#ffffff0| |a|s@1|i|g|n|m|e|n|t| +0#0000000&@60
+| +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| |v+0#af5f00255#ffffff0|a|r| +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
+@57|1|0|9|,|1| @8|3|6|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_07.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_07.dump
@ -0,0 +1,20 @@
+||+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@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|2| +0#0000000&@63
+||+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&#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| |v+0#af5f00255#ffffff0|a|r| +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@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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
+@57|1|2|7|,|5| @8|4|3|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_08.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_08.dump
@ -0,0 +1,20 @@
+||+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| |v+0#af5f00255#ffffff0|a|r| +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
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +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| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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+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
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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&| |+| |1|}+0#e000e06&@1| +0#0000000&@59
+@57|1|4|5|,|3| @8|4|9|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_09.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_09.dump
@ -0,0 +1,20 @@
+||+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| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@57
+||+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|v+0#af5f00255&|a|r| +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
+@57|1|6|3|,|1| @8|5|6|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_10.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_10.dump
@ -0,0 +1,20 @@
+| +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| |v+0#af5f00255#ffffff0|a|r| +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
+||+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|v+0#af5f00255&|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@55
+||+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
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@50
+@57|1|8|1|,|1| @8|6|2|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_11.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_11.dump
@ -0,0 +1,20 @@
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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
+||+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&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |n|o|t| |b|e| |f|o|l@1|o|w|e|d| |b|y| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@25
+| +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| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@57
+||+0#0000e05#a8a8a8255| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+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&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"| |E|N|D| |"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@57
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0|E|N|D| | +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&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
+@57|1|9@1|,|0|-|1| @6|6|9|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_12.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_12.dump
@ -0,0 +1,20 @@
+| +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| |v+0#af5f00255#ffffff0|a|r| +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
+||+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&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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|E|N|D| | +0#0000000&@64
+||+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&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |b|e| |v|e|r|t|i|c|a|l@1|y| |a|l|i|g|n|e|d| |w|i|t|h| |:|v|a|r| |(|i|f| |p|r|e|c|e|d|e|d| |b|y| |w|h|i|t|e|s|p
+| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
+| +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&@44
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|2|1|7|,|1| @8|7|5|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_13.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_13.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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|E|N|D| +0#0000000&@65
+||+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| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +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| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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|E|N|D| +0#0000000&@65
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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|E|N|D| | +0#0000000&@64
+@57|2|3|4|,|0|-|1| @6|8|1|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_14.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_14.dump
@ -0,0 +1,20 @@
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|E|N|D| | +0#0000000&@64
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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@4>E|N|D| +0#0000000&@64
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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@4|E|N|D| | +0#0000000&@63
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+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@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+@57|2|5|2|,|6| @8|8@1|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_15.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_15.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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|E|N|D| +0#0000000&@68
+||+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@1>#+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|v+0#af5f00255&|a|r| +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@2|E|N|D| +0#0000000&@66
+||+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| |e|n|d| |m|a|r|k|e|r|s| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |!+0#e000e06#ffffff0|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@60
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
+@57|2|7|0|,|3| @8|9|4|%| 
--- a/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_16.dump
+++ b/runtime/syntax/testdir/dumps/vim9_ex_let_heredoc_16.dump
@ -0,0 +1,20 @@
+|-+0#0000e05#a8a8a8255| |v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |0+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| >v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |A|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |A+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |e|r@1|o|r| |-| |l|e|a|d|i|n|g| |l|o|w|e|r|c|a|s|e| |c|h|a|r|a|c|t|e|r| +0#0000000&@35
+| +0#0000e05#a8a8a8255@1|v+0#af5f00255#ffffff0|a|r| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#af5f00255&|<@1| +0#0000000&|a+0#00e0e07&|!+0#0000000&|@|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@47
+| +0#0000e05#a8a8a8255@1|l+0#00e0e07#ffffff0|i|n|e|1| +0#0000000&@67
+| +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|i|n|e|2| @67
+| +0#0000e05#a8a8a8255@1|a+0#af5f00255#ffffff0|!|@+0#0000000&|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|2|8@1|,|1| @8|B|o|t| 
--- 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| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
@57|1|,|1| @10|T|o|p| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_01.dump
@ -1,20 +1,20 @@
 ||+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&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| >E+0#e000e06#ffffff0|O|S| +0#0000000&@69
 | +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |t|r|i|m| +0#0000000&@66
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +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#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@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @63
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@5|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@52
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +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
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|2| +0#0000000&@63
-||+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&#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
-@57|1|9|,|1| @10|7|%| 
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @61
+@57|1|9|,|1| @10|5|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_02.dump
@ -1,20 +1,20 @@
-|-+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@1| +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @61
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|g+0#00e0e07&|:|f|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@55
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| | +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| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|g+0#00e0e07&|:|f|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@53
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+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| |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
-||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +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| | +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+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
-@57|3|7|,|3| @9|1|7|%| 
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@46
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+@57|3|7|,|0|-|1| @7|1|3|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_03.dump
@ -1,20 +1,20 @@
-||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
 | +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| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| |g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@44
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| >l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +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| |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&| |+| |1|}+0#e000e06&@1| +0#0000000&@59
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| @61
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@5|\+0#e000e06&| +0#0000000&|g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@50
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +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|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| |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|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@57
-||+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
-@57|5@1|,|1| @9|2|7|%| 
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|[|g+0#00e0e07&|:|f|o@1|,+0#0000000&| @59
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|\+0#e000e06&| +0#0000000&|g+0#00e0e07&|:|b|a|r|]+0#0000000&| |=+0#e000e06&|<@1| |E|O|S| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +0#0000000&@69
+@57|5@1|,|1| @9|2|1|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_04.dump
@ -1,20 +1,20 @@
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|O|S| +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
+| +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@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
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|l|i|n|e|2| +0#0000000&@63
 ||+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&#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| |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
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +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| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |E|N|D| +0#0000000&@55
-||+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
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-@57|7|3|,|0|-|1| @7|3|7|%| 
+|-+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
+@57|7|3|,|1| @9|2|9|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_05.dump
@ -1,20 +1,20 @@
-| +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| |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@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
+| +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
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1|l|i|n|e|{+0#e000e06&|1+0#e000002&| +0#0000000&|++0#af5f00255&| +0#0000000&|1+0#e000002&|}+0#e000e06&| +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| | +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+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#0000000#ffffff0@72
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |n|o|t| |b|e| |f|o|l@1|o|w|e|d| |b|y| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@25
-| +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| |E|N|D| +0#0000000&@57
-||+0#0000e05#a8a8a8255| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
-||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-@57|9|1|,|0|-|1| @7|4|8|%| 
+@57|9|1|,|3| @9|3|6|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_06.dump
@ -1,20 +1,20 @@
-| +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
-|-+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| | +0#e000002#ffffff0|E|N|D| | +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&#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
-||+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&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
-|-+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|E|N|D| | +0#0000000&@64
 ||+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@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |b|e| |v|e|r|t|i|c|a|l@1|y| |a|l|i|g|n|e|d| |w|i|t|h| |:|l|e|t| |(|i|f| |p|r|e|c|e|d|e|d| |b|y| |w|h|i|t|e|s|p
-| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
-@57|1|0|9|,|0|-|1| @6|5|7|%| 
+|-+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&| |+| |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| | +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
+||+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|1+0#e000002&| |+| |0|}+0#e000e06&@1| +0#0000000&@57
+||+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
+@57|1|0|9|,|1| @8|4@1|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_07.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_07.dump
@ -1,20 +1,20 @@
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |b|e| |v|e|r|t|i|c|a|l@1|y| |a|l|i|g|n|e|d| |w|i|t|h| |:|l|e|t| |(|i|f| |p|r|e|c|e|d|e|d| |b|y| |w|h|i|t|e|s|p
-| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
 | +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&@44
-|-+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&@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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
-|-+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|E|N|D| +0#0000000&@65
+|-+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&#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| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+| +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| |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
 ||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
-@57|1|2|5|,|3| @8|6|7|%| 
+|-+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|N|D| +0#0000000&@55
+||+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
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|1|2|7|,|0|-|1| @6|5|2|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_08.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_08.dump
@ -1,20 +1,20 @@
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+| +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| | +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|E|N|D| +0#0000000&@65
+||+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
 ||+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@1>"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
-|-+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|E|N|D| | +0#0000000&@64
-||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
-|-+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@4|E|N|D| +0#0000000&@64
-||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |n|o|t| |b|e| |f|o|l@1|o|w|e|d| |b|y| |w|h|i|t|e|s|p|a|c|e| +0#0000000&@25
 | +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
-|-+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@4|E|N|D| | +0#0000000&@63
-||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
-@57|1|4|3|,|3| @8|7@1|%| 
+| +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| |E|N|D| +0#0000000&@57
+||+0#0000e05#a8a8a8255| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|1|4|5|,|0|-|1| @6|6|0|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_09.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_09.dump
@ -1,20 +1,20 @@
+| +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
+|-+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| | +0#e000002#ffffff0|E|N|D| | +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&#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
+||+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&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
+|-+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|E|N|D| | +0#0000000&@64
 ||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
-|-+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| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
-||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
-|-+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|E|N|D| +0#0000000&@68
-||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
-|-+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@2|E|N|D| +0#0000000&@66
-||+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| |e|n|d| |m|a|r|k|e|r|s| +0#0000000&@59
-@57|1|6|1|,|1| @8|8|7|%| 
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |b|e| |v|e|r|t|i|c|a|l@1|y| |a|l|i|g|n|e|d| |w|i|t|h| |:|l|e|t| |(|i|f| |p|r|e|c|e|d|e|d| |b|y| |w|h|i|t|e|s|p
+| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
+@57|1|6|3|,|0|-|1| @6|6|7|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_10.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_10.dump
@ -1,20 +1,20 @@
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r|s| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r| |m|u|s|t| |b|e| |v|e|r|t|i|c|a|l@1|y| |a|l|i|g|n|e|d| |w|i|t|h| |:|l|e|t| |(|i|f| |p|r|e|c|e|d|e|d| |b|y| |w|h|i|t|e|s|p
+| +0&#a8a8a8255@1|a+0&#ffffff0|c|e|)| +0#0000000&@68
 | +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| |!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@48
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
-||+0#0000e05#a8a8a8255| >!+0#e000e06#ffffff0|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@60
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@44
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@1>E|N|D| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
 | +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
-||+0#0000e05#a8a8a8255| |0+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@1|l+0#af5f00255&|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@50
+||+0#0000e05#a8a8a8255| | +0#e000002#ffffff0@3|E|N|D| +0#0000000&@65
+||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
 | +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |A|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
-||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
-||+0#0000e05#a8a8a8255| |A+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@43
+|-+0#0000e05#a8a8a8255| |l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#e000e06&|<@1| |t|r|i|m| |E|N|D| +0#0000000&@52
+||+0#0000e05#a8a8a8255| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+0#0000e05#a8a8a8255| |E+0#e000e06#ffffff0|N|D| +0#0000000&@69
 | +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
-| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|r@1|o|r| |-| |l|e|a|d|i|n|g| |l|o|w|e|r|c|a|s|e| |c|h|a|r|a|c|t|e|r| +0#0000000&@35
-| +0#0000e05#a8a8a8255@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#af5f00255&|<@1| +0#0000000&|a+0#00e0e07&|!+0#0000000&|@|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@47
-@57|1|7|9|,|1| @8|9|7|%| 
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+@57|1|7|9|,|3| @8|7|5|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_11.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_11.dump
@ -1,20 +1,20 @@
-| +0#0000e05#a8a8a8255@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#af5f00255&|<@1| +0#0000000&|a+0#00e0e07&|!+0#0000000&|@|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@47
-| +0#0000e05#a8a8a8255@1|l+0#00e0e07#ffffff0|i|n|e|1| +0#0000000&@67
-| +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|i|n|e|2| @67
-| +0#0000e05#a8a8a8255@1|a+0#af5f00255#ffffff0|!|@+0#0000000&|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@59
-| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
-|~+0#4040ff13&| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-| +0#0000000&@56|1|9|6|,|0|-|1| @6|B|o|t| 
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+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|E|N|D| +0#0000000&@65
+||+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@1>"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+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|E|N|D| | +0#0000000&@64
+||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+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@4|E|N|D| +0#0000000&@64
+||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+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@4|E|N|D| | +0#0000000&@63
+||+0#0000e05#a8a8a8255| | +0#e000e06#ffffff0@1|E|N|D| +0#0000000&@67
+@57|1|9|7|,|3| @8|8|2|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_12.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_12.dump
@ -0,0 +1,20 @@
+||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D| |"|]|)| +0#0000000&@41
+|-+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| |E+0#e000002#ffffff0|N|D| | +0#0000000&@68
+||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+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|E|N|D| +0#0000000&@68
+||+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@1|"+0#0000e05&| |a|s@1|e|r|t|_|e|q|u|a|l|(|f|o@1|,| |[|"|E|N|D|"|]|)| +0#0000000&@42
+|-+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@2|E|N|D| +0#0000000&@66
+||+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| |e|n|d| |m|a|r|k|e|r|s| +0#0000000&@59
+@57|2|1|5|,|1| @8|9|0|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_13.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_13.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|n|d| |m|a|r|k|e|r|s| +0#0000000&@59
+| +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| |!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@48
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| >!+0#e000e06#ffffff0|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@60
+| +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| |0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |0+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +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| |A|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@47
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|1| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |l+0#e000002#ffffff0|i|n|e|2| +0#0000000&@67
+||+0#0000e05#a8a8a8255| |A+0#e000e06#ffffff0|!|@|#|$|%|^|&|*|(|)|_|+| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|"+0&#ffffff0| |e|r@1|o|r| |-| |l|e|a|d|i|n|g| |l|o|w|e|r|c|a|s|e| |c|h|a|r|a|c|t|e|r| +0#0000000&@35
+| +0#0000e05#a8a8a8255@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#af5f00255&|<@1| +0#0000000&|a+0#00e0e07&|!+0#0000000&|@|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@47
+@57|2|3@1|,|1| @8|9|8|%| 
--- a/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_14.dump
+++ b/runtime/syntax/testdir/dumps/vim_ex_let_heredoc_14.dump
@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1|l+0#af5f00255#ffffff0|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|=+0#af5f00255&|<@1| +0#0000000&|a+0#00e0e07&|!+0#0000000&|@|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@47
+| +0#0000e05#a8a8a8255@1|l+0#00e0e07#ffffff0|i|n|e|1| +0#0000000&@67
+| +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|i|n|e|2| @67
+| +0#0000e05#a8a8a8255@1|a+0#af5f00255#ffffff0|!|@+0#0000000&|#|$|%+0#af5f00255&|^+0#0000000&|&+0#00e0e07&|*+0#af5f00255&|(+0#e000e06&|)|_+0#0000000&|++0#af5f00255&| +0#0000000&@59
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|2|5|0|,|0|-|1| @6|B|o|t| 
--- a/runtime/syntax/testdir/input/setup/vim9_ex_let_heredoc.vim
+++ b/runtime/syntax/testdir/input/setup/vim9_ex_let_heredoc.vim
@ -0,0 +1,2 @@
+highlight link vimVar Identifier
+
--- a/runtime/syntax/testdir/input/vim9_ex_let_heredoc.vim
+++ b/runtime/syntax/testdir/input/vim9_ex_let_heredoc.vim
@ -0,0 +1,298 @@
+vim9script
+# VIM_TEST_SETUP let g:vimsyn_folding = "h"
+# VIM_TEST_SETUP setl fdc=2 fdl=99 fdm=syntax
+
+
+var foo =<< END
+line1
+line2
+END
+
+  var foo =<< END
+line1
+line2
+END
+
+var [foo, bar] =<< EOS
+line1
+line2
+EOS
+
+  var [foo, bar] =<< EOS
+line1
+line2
+EOS
+
+var [foo,
+      \ bar] =<< EOS
+line1
+line2
+EOS
+
+  var [foo,
+	\ bar] =<< EOS
+line1
+line2
+EOS
+
+# assignment
+
+foo =<< END
+line1
+line2
+END
+
+  foo =<< END
+line1
+line2
+END
+
+g:foo =<< END
+line1
+line2
+END
+
+  g:foo =<< END
+line1
+line2
+END
+
+[foo, bar] =<< EOS
+line1
+line2
+EOS
+
+  [foo, bar] =<< EOS
+line1
+line2
+EOS
+
+[foo,
+      \ bar] =<< EOS
+line1
+line2
+EOS
+
+  [foo,
+	\ bar] =<< EOS
+line1
+line2
+EOS
+
+[g:foo, g:bar] =<< EOS
+line1
+line2
+EOS
+
+  [g:foo, g:bar] =<< EOS
+line1
+line2
+EOS
+
+[g:foo,
+      \ g:bar] =<< EOS
+line1
+line2
+EOS
+
+  [g:foo,
+	\ g:bar] =<< EOS
+line1
+line2
+EOS
+
+
+# typed
+
+var foo: list<string> =<< END
+line1
+line2
+END
+
+var [foo: string, bar: string] =<< END
+line1
+line2
+END
+
+# assignment
+
+# trim
+
+var foo =<< trim END
+  line1
+  line2
+END
+
+  var foo =<< trim END
+    line1
+    line2
+  END
+
+
+# interpolation
+
+var foo =<< eval END
+line{1 + 0}
+line{1 + 1}
+END
+
+  var foo =<< eval END
+line{1 + 0}
+line{1 + 1}
+END
+
+var foo =<< trim eval END
+  line{1 + 0}
+  line{1 + 1}
+END
+
+  var foo =<< trim eval END
+    line{1 + 0}
+    line{1 + 1}
+  END
+
+# no interpolation (escaped { and })
+
+var foo =<< eval END
+line{{1 + 0}}
+line{{1 + 1}}
+END
+
+  var foo =<< eval END
+line{{1 + 0}}
+line{{1 + 1}}
+END
+
+var foo =<< trim eval END
+  line{{1 + 0}}
+  line{{1 + 1}}
+END
+
+  var foo =<< trim eval END
+    line{{1 + 0}}
+    line{{1 + 1}}
+  END
+
+
+# no interpolation
+
+var foo =<< END
+line{1 + 0}
+line{1 + 1}
+END
+
+  var foo =<< END
+line{1 + 0}
+line{1 + 1}
+END
+
+var foo =<< trim END
+  line{1 + 0}
+  line{1 + 1}
+END
+
+  var foo =<< trim END
+    line{1 + 0}
+    line{1 + 1}
+  END
+
+
+# end marker must not be followed by whitespace
+
+# assert_equal(foo, ["END "])
+var foo =<< END
+END 
+END
+
+# assert_equal(foo, [" END "])
+var foo =<< END
+ END 
+END
+
+# assert_equal(foo, ["END "])
+var foo =<< trim END
+  END 
+END
+
+# assert_equal(foo, ["END "])
+  var foo =<< trim END
+    END 
+  END
+
+
+# end marker must be vertically aligned with :var (if preceded by whitespace)
+
+# assert_equal(foo, ["END"])
+var foo =<< trim END
+  END
+END
+
+  # assert_equal(foo, ["END"])
+  var foo =<< trim END
+    END
+  END
+
+# assert_equal(foo, ["END "])
+var foo =<< trim END
+END 
+END
+
+  # assert_equal(foo, ["END"])
+  var foo =<< trim END
+    END
+  END
+
+  # assert_equal(foo, ["END "])
+  var foo =<< trim END
+    END 
+  END
+
+  # assert_equal(foo, ["END"])
+  var foo =<< trim END
+     END
+  END
+
+  # assert_equal(foo, ["END "])
+  var foo =<< trim END
+     END 
+  END
+
+  # assert_equal(foo, ["END "])
+  var foo =<< trim END
+END 
+END
+
+  # assert_equal(foo, ["END"])
+  var foo =<< trim END
+ END
+END
+
+  # assert_equal(foo, ["END"])
+  var foo =<< trim END
+   END
+END
+
+
+# end markers
+
+var foo =<< !@#$%^&*()_+
+line1
+line2
+!@#$%^&*()_+
+
+var foo =<< 0!@#$%^&*()_+
+line1
+line2
+0!@#$%^&*()_+
+
+var foo =<< A!@#$%^&*()_+
+line1
+line2
+A!@#$%^&*()_+
+
+# error - leading lowercase character
+var foo =<< a!@#$%^&*()_+
+line1
+line2
+a!@#$%^&*()_+
+
--- a/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim
+++ b/runtime/syntax/testdir/input/vim_ex_let_heredoc.vim
@ -13,6 +13,60 @@ line1
 line2
 END

+let [foo, bar] =<< EOS
+line1
+line2
+EOS
+
+  let [foo, bar] =<< EOS
+line1
+line2
+EOS
+
+let [foo,
+      \ bar] =<< EOS
+line1
+line2
+EOS
+
+  let [foo,
+	\ bar] =<< EOS
+line1
+line2
+EOS
+
+let g:foo =<< END
+line1
+line2
+END
+
+  let g:foo =<< END
+line1
+line2
+END
+
+let [g:foo, g:bar] =<< EOS
+line1
+line2
+EOS
+
+  let [g:foo, g:bar] =<< EOS
+line1
+line2
+EOS
+
+let [g:foo,
+      \ g:bar] =<< EOS
+line1
+line2
+EOS
+
+  let [g:foo,
+	\ g:bar] =<< EOS
+line1
+line2
+EOS
+

 " trim