Commit: runtime(doc): Update ft-vim-syntax documentation

[Christian Brabandt]

runtime(doc): Update ft-vim-syntax documentation

Commit: https://github.com/vim/vim/commit/9c4de84b2dce263edbeafb38eaaf914c83084765
Author: veotos <veo...@users.noreply.github.com>
Date: Thu Aug 7 15:17:45 2025 +0200

runtime(doc): Update ft-vim-syntax documentation

g:vimsyn_folding and g:vimsyn_embed regexps need to match case.

closes: #17914

Signed-off-by: veotos <veo...@users.noreply.github.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index e6d1496ad..968853970 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt* For Vim version 9.1. Last change: 2025 Aug 06
+*syntax.txt* For Vim version 9.1. Last change: 2025 Aug 07


VIM REFERENCE MANUAL by Bram Moolenaar
@@ -4048,12 +4048,12 @@ The g:vimsyn_embed option allows users to select what, if any, types of
embedded script highlighting they wish to have. >

g:vimsyn_embed == 0 : don't support any embedded scripts
- g:vimsyn_embed =~ 'l' : support embedded Lua
- g:vimsyn_embed =~ 'm' : support embedded MzScheme
- g:vimsyn_embed =~ 'p' : support embedded Perl
- g:vimsyn_embed =~ 'P' : support embedded Python
- g:vimsyn_embed =~ 'r' : support embedded Ruby
- g:vimsyn_embed =~ 't' : support embedded Tcl
+ g:vimsyn_embed =~# 'l' : support embedded Lua
+ g:vimsyn_embed =~# 'm' : support embedded MzScheme
+ g:vimsyn_embed =~# 'p' : support embedded Perl
+ g:vimsyn_embed =~# 'P' : support embedded Python
+ g:vimsyn_embed =~# 'r' : support embedded Ruby
+ g:vimsyn_embed =~# 't' : support embedded Tcl
<
By default, g:vimsyn_embed is unset, and the Lua and Python script interfaces
are supported.
@@ -4062,19 +4062,19 @@ are supported.
Some folding is now supported with when 'foldmethod' is set to "syntax": >

g:vimsyn_folding == 0 or doesn't exist: no syntax-based folding
- g:vimsyn_folding =~ 'a' : fold augroups
- g:vimsyn_folding =~ 'c' : fold Vim9 classes
- g:vimsyn_folding =~ 'e' : fold Vim9 enums
- g:vimsyn_folding =~ 'f' : fold functions
- g:vimsyn_folding =~ 'h' : fold let heredocs
- g:vimsyn_folding =~ 'i' : fold Vim9 interfaces
- g:vimsyn_folding =~ 'H' : fold Vim9 legacy headers
- g:vimsyn_folding =~ 'l' : fold Lua heredocs
- g:vimsyn_folding =~ 'm' : fold MzScheme heredocs
- g:vimsyn_folding =~ 'p' : fold Perl heredocs
- g:vimsyn_folding =~ 'P' : fold Python heredocs
- g:vimsyn_folding =~ 'r' : fold Ruby heredocs
- g:vimsyn_folding =~ 't' : fold Tcl heredocs
+ g:vimsyn_folding =~# 'a' : fold augroups
+ g:vimsyn_folding =~# 'c' : fold Vim9 classes
+ g:vimsyn_folding =~# 'e' : fold Vim9 enums
+ g:vimsyn_folding =~# 'f' : fold functions
+ g:vimsyn_folding =~# 'h' : fold let heredocs
+ g:vimsyn_folding =~# 'i' : fold Vim9 interfaces
+ g:vimsyn_folding =~# 'H' : fold Vim9 legacy headers
+ g:vimsyn_folding =~# 'l' : fold Lua heredocs
+ g:vimsyn_folding =~# 'm' : fold MzScheme heredocs
+ g:vimsyn_folding =~# 'p' : fold Perl heredocs
+ g:vimsyn_folding =~# 'P' : fold Python heredocs
+ g:vimsyn_folding =~# 'r' : fold Ruby heredocs
+ g:vimsyn_folding =~# 't' : fold Tcl heredocs
<

By default, g:vimsyn_folding is unset. Concatenate the indicated characters