runtime(pandoc): update YAML metadata block parsing in compiler runtime
Previously the incorrect regexp forced title to be a single letter
because of using '+' instead of the '\+' regexp modifier.
closes: #17321
Signed-off-by: Alexander Abrosimov <alexander.n.abrosimov@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/compiler/pandoc.vim b/runtime/compiler/pandoc.vim
index 5d90a51..40d2d02 100644
--- a/runtime/compiler/pandoc.vim
+++ b/runtime/compiler/pandoc.vim
@@ -2,6 +2,7 @@
" Compiler: Pandoc
" Maintainer: Konfekt
" Last Change: 2024 Nov 19
+" 2025 May 15 Update the title regex for CompilerSet #17321
"
" Expects output file extension, say `:make html` or `:make pdf`.
" Passes additional arguments to pandoc, say `:make html --self-contained`.
@@ -51,7 +52,7 @@
execute 'CompilerSet makeprg=pandoc'..escape(
\ ' --standalone'..
- \ (s:PandocFiletype(&filetype) ==# 'markdown' && (getline(1) =~# '^%\s\+\S\+' || (search('^title:\s+\S+', 'cnw') > 0)) ?
+ \ (s:PandocFiletype(&filetype) ==# 'markdown' && (getline(1) =~# '^%\s\+\S\+' || (search('^title:\s\+\S\+', 'cnw') > 0)) ?
\ '' : ' --metadata title=%:t:r:S')..
\ ' '..s:PandocLang()..
\ ' --from='..s:PandocFiletype(&filetype)..