Commit: patch 9.1.1909: filetype: .mom files recognized as nroff files

[Christian Brabandt]

patch 9.1.1909: filetype: .mom files recognized as nroff files

Commit: https://github.com/vim/vim/commit/23e12c0b7ec02cc374f111fd9dfaa84734dbb7f5
Author: Callum Andrew <d...@candrew.net>
Date: Wed Nov 12 19:43:28 2025 +0000

patch 9.1.1909: filetype: .mom files recognized as nroff files

Problem: filetype: .mom files recognized as nroff files
Solution: Detect *.mom files as groff filetype instead
(Callum Andrew)

Reference:
- mom macros are written specifically for groff:
https://www.schaffter.ca/mom/

closes: #18718

Signed-off-by: Callum Andrew <d...@candrew.net>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 9a6febdb2..9fea9fa97 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1,7 +1,7 @@
" Vim support file to detect file types
"
" Maintainer: The Vim Project <https://github.com/vim/vim>
-" Last Change: 2025 Oct 09
+" Last Change: 2025 Nov 11
" Former Maintainer: Bram Moolenaar <Br...@vim.org>

" If the filetype can be detected from extension or file name(the final path component),
@@ -774,12 +774,13 @@ au BufNewFile,BufRead */neofetch/config.conf setf sh
" Nginx
au BufNewFile,BufRead *.nginx,nginx*.conf,*nginx.conf,*/nginx/*.conf setf nginx

-" Nroff/Troff (*.ms and *.t are checked below)
+" Nroff/Groff/Troff (*.ms and *.t are checked below)
au BufNewFile,BufRead *.me
\ if expand("<afile>") != "read.me" && expand("<afile>") != "click.me" |
\ setf nroff |
\ endif
-au BufNewFile,BufRead *.tr,*.nr,*.roff,*.tmac,*.mom setf nroff
+au BufNewFile,BufRead *.tr,*.nr,*.roff,*.tmac setf nroff
+au BufNewFile,BufRead *.groff,*.mom setf groff
au BufNewFile,BufRead *.[0-9],*.[013]p,*.[1-8]x,*.3{am,perl,pm,posix,type},*.n call dist#ft#FTnroff()

" Nroff or Objective C++
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index c2a8485c1..9bb0ef15c 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -343,6 +343,7 @@ def s:GetFilenameChecks(): dict<list<string>>
grads: ['file.gs'],
graphql: ['file.graphql', 'file.graphqls', 'file.gql'],
gretl: ['file.gretl'],
+ groff: ['file.groff', 'file.mom'],
groovy: ['file.gradle', 'file.groovy', 'Jenkinsfile'],
group: ['any/etc/group', 'any/etc/group-', 'any/etc/group.edit', 'any/etc/gshadow', 'any/etc/gshadow-', 'any/etc/gshadow.edit', 'any/var/backups/group.bak', 'any/var/backups/gshadow.bak', '/etc/group', '/etc/group-', '/etc/group.edit', '/etc/gshadow', '/etc/gshadow-', '/etc/gshadow.edit', '/var/backups/group.bak', '/var/backups/gshadow.bak'],
grub: ['/boot/grub/menu.lst', '/boot/grub/grub.conf', '/etc/grub.conf', 'any/boot/grub/grub.conf', 'any/boot/grub/menu.lst', 'any/etc/grub.conf'],
@@ -576,7 +577,7 @@ def s:GetFilenameChecks(): dict<list<string>>
nix: ['file.nix'],
norg: ['file.norg'],
nqc: ['file.nqc'],
- nroff: ['file.tr', 'file.nr', 'file.roff', 'file.tmac', 'file.mom', 'tmac.file'],
+ nroff: ['file.tr', 'file.nr', 'file.roff', 'file.tmac', 'tmac.file'],
nsis: ['file.nsi', 'file.nsh'],
ntriples: ['file.nt'],
nu: ['file.nu'],
diff --git a/src/version.c b/src/version.c
index 196996067..dc876dad3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 1909,
/**/
1908,
/**/