patch 9.1.1304: filetype: some man files are not recognized

Problem:  filetype: some man files are not recognized
          (e.g. 1p (POSIX commands))
Solution: update the filetype detection pattern and detect more man
          files as nroff (Eisuke Kawashima)

- sections are revised referring to
    - debian-12:/etc/manpath.config
    - fedora-41:/etc/man_db.conf
- detection logic is improved
- detection test is implemented

closes: #17117

Signed-off-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Eisuke Kawashima
2025-04-15 18:30:05 +02:00
committed by Christian Brabandt
parent d62377386c
commit babdb0554a
4 changed files with 28 additions and 8 deletions

View File

@ -3,7 +3,7 @@ vim9script
# Vim functions for file type detection
#
# Maintainer: The Vim Project <https://github.com/vim/vim>
# Last Change: 2025 Apr 10
# Last Change: 2025 Apr 15
# Former Maintainer: Bram Moolenaar <Bram@vim.org>
# These functions are moved here from runtime/filetype.vim to make startup
@ -595,11 +595,15 @@ enddef
# This function checks if one of the first five lines start with a dot. In
# that case it is probably an nroff file: 'filetype' is set and 1 is returned.
export def FTnroff(): number
if getline(1)[0] .. getline(2)[0] .. getline(3)[0]
.. getline(4)[0] .. getline(5)[0] =~ '\.'
setf nroff
return 1
endif
var n = 1
while n < 5
var line = getline(n)
if line =~ '^\.\S\S\?'
setf nroff
return 1
endif
n += 1
endwhile
return 0
enddef