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runtime(config): mark unportable += as an error

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closes: #18292

Signed-off-by: Damien Lejay <damien@lejay.be>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Damien Lejay
2025-09-14 10:54:33 -04:00
committed by Christian Brabandt
parent 81ca9916d2
commit 1e7a288cd3
1 changed files with 6 additions and 1 deletions
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7
runtime/syntax/config.vim
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@@ -1,10 +1,11 @@
" Vim syntax file
" Language: configure.in script: M4 with sh
" Language: Autoconf M4
" Former Maintainer: Christian Hammesr <ch@lathspell.westend.com>
" Last Change: 2018 Feb 03
" (patch from Yngve Inntjore Levinsen to detect AC_MSG)
" (patch from Khym Chanur to add @Spell)
" (patch from James McCoy to fix paren matching)
" (2025 Sep 14 patch from Damien Lejay to detect unportable +=)
" Well, I actually even do not know much about m4. This explains why there
" is probably very much missing here, yet !
@@ -34,6 +35,9 @@ syn region configstring start=+\z(["'`]\)+ skip=+\\\z1+ end=+\z1+ contains=@
syn region configmsg matchgroup=configfunction start="AC_MSG_[A-Z]*\ze(\[" matchgroup=configdelimiter end="\])" contains=configdelimiter,@Spell
syn region configmsg matchgroup=configfunction start="AC_MSG_[A-Z]*\ze([^[]" matchgroup=configdelimiter end=")" contains=configdelimiter,@Spell
" Help write portable shell code
syn match acPlusEq '\v\+\=' containedin=ALLBUT,configcomment
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
@@ -47,6 +51,7 @@ hi def link configkeyword Keyword
hi def link configspecial Special
hi def link configstring String
hi def link configmsg String
hi def link acPlusEq Error
let b:current_syntax = "config"