patch 9.1.1359: filetype: GNU Radio config files are not recognized

Problem:  filetype: GNU Radio config files are not recognized.
Solution: detect GNU Radio config files as confini filetype.  Only
          allow '#' as start of comment in confini syntax (zeertzjq).

Ref:
- https://wiki.gnuradio.org/index.php/Configuration_Files

closes: #17242

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

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 Apr 24
+" Last Change:	2025 May 02
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Listen very carefully, I will say this only once
@@ -1811,6 +1811,8 @@ au BufNewFile,BufRead pacman.conf,mpv.conf		setf confini
 au BufNewFile,BufRead */.aws/config,*/.aws/credentials	setf confini
 au BufNewFile,BufRead *.nmconnection			setf confini
 au BufNewFile,BufRead paru.conf				setf confini
+au BufNewFile,BufRead */{,.}gnuradio/*.conf		setf confini
+au BufNewFile,BufRead */gnuradio/conf.d/*.conf		setf confini
 
 " Pacman hooks
 au BufNewFile,BufRead *.hook

runtime/syntax/cfg.vim

@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Good old CFG files
 " Maintainer:	Igor N. Prischepoff (igor@tyumbit.ru, pri_igor@mail.ru)
-" Last change:	2012 Aug 11
+" Last Change:	2012 Aug 11
 " 2024 Nov 14 by Vim project:  // only denotes a comment when starting a line (#16051)
 
 " quit when a syntax file was already loaded

runtime/syntax/confini.vim

@@ -1,5 +1,7 @@
 " Vim syntax file
 " Language: confini
+" Last Change:
+" 2025 May 02 by Vim project commented line starts with # only
 
 " Quit if a syntax file was already loaded
 if exists("b:current_syntax")
@@ -9,4 +11,8 @@ endif
 " Use the cfg syntax for now, it's similar.
 runtime! syntax/cfg.vim
 
+" Only accept '#' as the start of a comment.
+syn clear CfgComment
+syn match CfgComment "#.*" contains=@Spell
+
 let b:current_syntax = 'confini'

src/testdir/test_filetype.vim

@@ -183,7 +183,8 @@ def s:GetFilenameChecks(): dict<list<string>>
     conaryrecipe: ['file.recipe'],
     conf: ['auto.master', 'file.conf', 'texdoc.cnf', '.x11vncrc', '.chktexrc', '.ripgreprc', 'ripgreprc', 'file.ctags'],
     config: ['configure.in', 'configure.ac', '/etc/hostname.file', 'any/etc/hostname.file'],
-    confini: ['pacman.conf', 'paru.conf', 'mpv.conf', 'any/.aws/config', 'any/.aws/credentials', 'file.nmconnection'],
+    confini: ['pacman.conf', 'paru.conf', 'mpv.conf', 'any/.aws/config', 'any/.aws/credentials', 'file.nmconnection',
+              'any/.gnuradio/grc.conf', 'any/gnuradio/config.conf', 'any/gnuradio/conf.d/modtool.conf'],
     context: ['tex/context/any/file.tex', 'file.mkii', 'file.mkiv', 'file.mkvi', 'file.mkxl', 'file.mklx'],
     cook: ['file.cook'],
     corn: ['file.corn'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1359,
 /**/
     1358,
 /**/