patch 9.1.0304: filetype: cgdb config file is not recognized

Problem:  filetype: cgdb config file is not recognized
Solution: Detect cgdbrc files as cgdbrc filetype
          (Wu, Zhenyu)

closes: #14458

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/filetype.vim

@@ -296,6 +296,9 @@ au BufNewFile,BufRead calendar			setf calendar
 " Cap'n Proto
 au BufNewFile,BufRead *.capnp			setf capnp
 
+" Cgdb config file
+au BufNewFile,BufRead cgdbrc			setf cgdbrc
+
 " C#
 au BufNewFile,BufRead *.cs,*.csx		setf cs
 

runtime/ftplugin/cgdbrc.vim

@@ -0,0 +1,21 @@
+" Vim filetype plugin file
+" Language:             cgdbrc
+" Maintainer:           Wu, Zhenyu <wuzhenyu@ustc.edu>
+" Documentation:        https://cgdb.github.io/docs/Configuring-CGDB.html
+" Latest Revision:      2024-04-09
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:save_cpoptions = &cpoptions
+set cpoptions&vim
+
+let b:undo_ftplugin = 'setl com< cms<'
+
+setlocal commentstring=#%s
+setlocal comments=:#
+
+let &cpoptions = s:save_cpoptions
+unlet s:save_cpoptions

runtime/syntax/cgdbrc.vim

@@ -0,0 +1,16 @@
+" Vim syntax file
+" Language:             cgdbrc
+" Maintainer:           Wu, Zhenyu <wuzhenyu@ustc.edu>
+" Documentation:        https://cgdb.github.io/docs/Configuring-CGDB.html
+" Latest Revision:      2024-04-09
+
+if exists('b:current_syntax')
+  finish
+endif
+let b:current_syntax = 'cgdbrc'
+
+runtime! syntax/vim.vim
+
+syn region cgdbComment		start="^\s*\#" skip="\\$" end="$" contains=@Spell
+
+highlight default link cgdbComment Comment

src/testdir/test_filetype.vim

@@ -145,6 +145,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     cf: ['file.cfm', 'file.cfi', 'file.cfc'],
     cfengine: ['cfengine.conf'],
     cfg: ['file.hgrc', 'filehgrc', 'hgrc', 'some-hgrc'],
+    cgdbrc: ['cgdbrc'],
     ch: ['file.chf'],
     chaiscript: ['file.chai'],
     chaskell: ['file.chs'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    304,
 /**/
     303,
 /**/