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patch 9.1.1713: filetype: fvwm2m4 files are no longer detected

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Problem:  filetype: fvwm2m4 files are no longer recognized
          (after 9.1.1687).
Solution: Add a special case in m4 filetype detection (zeertzjq).

closes: #18146

Co-authored-by: Damien Lejay <damien@lejay.be>
Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
zeertzjq
2025-08-29 18:31:29 +02:00
committed by Christian Brabandt
parent 99af7690eb
commit 5355e81868
4 changed files with 22 additions and 18 deletions
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25
runtime/autoload/dist/ft.vim vendored
View File

@ -601,31 +601,36 @@ enddef
# For files ending in *.m4, distinguish:
# – *.html.m4 files
# - *fvwm2rc*.m4 files
# – files in the Autoconf M4 dialect
# – files in POSIX M4
export def FTm4()
var fname = expand('%:t')
var path = expand('%:p:h')
# Case 0: canonical Autoconf file
if fname ==# 'aclocal.m4'
setf config
return
endif
# Case 1: html.m4
if fname =~# 'html\.m4$'
setf htmlm4
return
endif
# Case 2: repo heuristic (nearby configure.ac)
if fname =~# 'fvwm2rc'
setf fvwm2m4
return
endif
# Canonical Autoconf file
if fname ==# 'aclocal.m4'
setf config
return
endif
# Repo heuristic for Autoconf M4 (nearby configure.ac)
if filereadable(path .. '/../configure.ac') || filereadable(path .. '/configure.ac')
setf config
return
endif
# Case 3: content heuristic (scan first ~200 lines)
# Content heuristic for Autoconf M4 (scan first ~200 lines)
# Signals:
# - Autoconf macro prefixes: AC_/AM_/AS_/AU_/AT_
var n = 1
@ -639,7 +644,7 @@ export def FTm4()
n += 1
endwhile
# Case 4: default to POSIX M4
# Default to POSIX M4
setf m4
enddef

10
runtime/filetype.vim
View File

@ -1,7 +1,7 @@
" Vim support file to detect file types
"
" Maintainer: The Vim Project <https://github.com/vim/vim>
" Last Change: 2025 Aug 26
" Last Change: 2025 Aug 29
" Former Maintainer: Bram Moolenaar <Bram@vim.org>
" Listen very carefully, I will say this only once
@ -1519,7 +1519,7 @@ au BufNewFile,BufRead *.lsl call dist#ft#FTlsl()
au BufNewFile,BufRead *.lss setf lss
" M4
au BufNewFile,BufRead *.m4 call dist#ft#FTm4()
au BufNewFile,BufRead *.m4 call dist#ft#FTm4()
au BufNewFile,BufRead .m4_history setf m4
@ -3190,11 +3190,7 @@ au BufNewFile,BufRead */.fvwm/* call s:StarSetf('fvwm')
au BufNewFile,BufRead *fvwmrc*,*fvwm95*.hook
\ let b:fvwm_version = 1 | call s:StarSetf('fvwm')
au BufNewFile,BufRead *fvwm2rc*
\ if expand("<afile>:e") == "m4"
\| call s:StarSetf('fvwm2m4')
\|else
\| let b:fvwm_version = 2 | call s:StarSetf('fvwm')
\|endif
\ let b:fvwm_version = 2 | call s:StarSetf('fvwm')
" Gedcom
au BufNewFile,BufRead */tmp/lltmp* call s:StarSetf('gedcom')