diff --git a/runtime/ftplugin/debchangelog.vim b/runtime/ftplugin/debchangelog.vim
index a78f781..cf8dd17 100644
--- a/runtime/ftplugin/debchangelog.vim
+++ b/runtime/ftplugin/debchangelog.vim
@@ -1,9 +1,9 @@
 " Vim filetype plugin file (GUI menu, folding and completion)
 " Language:     Debian Changelog
-" Maintainer:   Debian Vim Maintainers
+" Maintainer:   Debian Vim Maintainers <team+vim@tracker.debian.org>
 " Former Maintainers:   Michael Piefel <piefel@informatik.hu-berlin.de>
 "                       Stefano Zacchiroli <zack@debian.org>
-" Last Change:  2018-01-28
+" Last Change:  2022 Jul 25
 " License:      Vim License
 " URL:          https://salsa.debian.org/vim-team/vim-debian/blob/master/ftplugin/debchangelog.vim
 
@@ -35,6 +35,11 @@
   finish
 endif
 
+" Make sure the '<' and 'C' flags are not included in 'cpoptions', otherwise
+" <CR> would not be recognized.  See ":help 'cpoptions'".
+let s:cpo_save = &cpo
+set cpo&vim
+
 " Don't load another plugin (this is global)
 let g:did_changelog_ftplugin = 1
 
@@ -101,13 +106,13 @@
 " These functions implement the menus
 function NewVersion()
     " The new entry is unfinalised and shall be changed
-    amenu disable Changelog.New\ Version
-    amenu enable Changelog.Add\ Entry
-    amenu enable Changelog.Close\ Bug
-    amenu enable Changelog.Set\ Distribution
-    amenu enable Changelog.Set\ Urgency
-    amenu disable Changelog.Unfinalise
-    amenu enable Changelog.Finalise
+    amenu disable &Changelog.&New\ Version
+    amenu enable &Changelog.&Add\ Entry
+    amenu enable &Changelog.&Close\ Bug
+    amenu enable &Changelog.Set\ &Distribution
+    amenu enable &Changelog.Set\ &Urgency
+    amenu disable &Changelog.U&nfinalise
+    amenu enable &Changelog.&Finalise
     call append(0, substitute(getline(1), '-\([[:digit:]]\+\))', '-$$\1)', ''))
     call append(1, '')
     call append(2, '')
@@ -117,7 +122,9 @@
     normal! 1G0
     call search(')')
     normal! h
-    normal! 
+    " ':normal' doens't support key annotation (<c-a>) directly.
+    " Vim's manual recommends using ':exe' to use key annotation indirectly (backslash-escaping needed though).
+    exe "normal! \<c-a>"
     call setline(1, substitute(getline(1), '-\$\$', '-', ''))
     if exists('g:debchangelog_fold_enable')
         foldopen
@@ -161,13 +168,13 @@
 
 function <SID>UnfinaliseMenu()
     " This means the entry shall be changed
-    amenu disable Changelog.New\ Version
-    amenu enable Changelog.Add\ Entry
-    amenu enable Changelog.Close\ Bug
-    amenu enable Changelog.Set\ Distribution
-    amenu enable Changelog.Set\ Urgency
-    amenu disable Changelog.Unfinalise
-    amenu enable Changelog.Finalise
+    amenu disable &Changelog.&New\ Version
+    amenu enable &Changelog.&Add\ Entry
+    amenu enable &Changelog.&Close\ Bug
+    amenu enable &Changelog.Set\ &Distribution
+    amenu enable &Changelog.Set\ &Urgency
+    amenu disable &Changelog.U&nfinalise
+    amenu enable &Changelog.&Finalise
 endfunction
 
 function Unfinalise()
@@ -179,13 +186,13 @@
 
 function <SID>FinaliseMenu()
     " This means the entry should not be changed anymore
-    amenu enable Changelog.New\ Version
-    amenu disable Changelog.Add\ Entry
-    amenu disable Changelog.Close\ Bug
-    amenu disable Changelog.Set\ Distribution
-    amenu disable Changelog.Set\ Urgency
-    amenu enable Changelog.Unfinalise
-    amenu disable Changelog.Finalise
+    amenu enable &Changelog.&New\ Version
+    amenu disable &Changelog.&Add\ Entry
+    amenu disable &Changelog.&Close\ Bug
+    amenu disable &Changelog.Set\ &Distribution
+    amenu disable &Changelog.Set\ &Urgency
+    amenu enable &Changelog.U&nfinalise
+    amenu disable &Changelog.&Finalise
 endfunction
 
 function Finalise()
@@ -198,26 +205,26 @@
 
 function <SID>MakeMenu()
     amenu &Changelog.&New\ Version			:call NewVersion()<CR>
-    amenu Changelog.&Add\ Entry				:call AddEntry()<CR>
-    amenu Changelog.&Close\ Bug				:call CloseBug()<CR>
-    menu Changelog.-sep-				<nul>
+    amenu &Changelog.&Add\ Entry				:call AddEntry()<CR>
+    amenu &Changelog.&Close\ Bug				:call CloseBug()<CR>
+    menu &Changelog.-sep-				<nul>
 
-    amenu Changelog.Set\ &Distribution.&unstable	:call Distribution("unstable")<CR>
-    amenu Changelog.Set\ Distribution.&frozen		:call Distribution("frozen")<CR>
-    amenu Changelog.Set\ Distribution.&stable		:call Distribution("stable")<CR>
-    menu Changelog.Set\ Distribution.-sep-		<nul>
-    amenu Changelog.Set\ Distribution.frozen\ unstable	:call Distribution("frozen unstable")<CR>
-    amenu Changelog.Set\ Distribution.stable\ unstable	:call Distribution("stable unstable")<CR>
-    amenu Changelog.Set\ Distribution.stable\ frozen	:call Distribution("stable frozen")<CR>
-    amenu Changelog.Set\ Distribution.stable\ frozen\ unstable	:call Distribution("stable frozen unstable")<CR>
+    amenu &Changelog.Set\ &Distribution.&unstable	:call Distribution("unstable")<CR>
+    amenu &Changelog.Set\ &Distribution.&frozen		:call Distribution("frozen")<CR>
+    amenu &Changelog.Set\ &Distribution.&stable		:call Distribution("stable")<CR>
+    menu &Changelog.Set\ &Distribution.-sep-		<nul>
+    amenu &Changelog.Set\ &Distribution.frozen\ unstable	:call Distribution("frozen unstable")<CR>
+    amenu &Changelog.Set\ &Distribution.stable\ unstable	:call Distribution("stable unstable")<CR>
+    amenu &Changelog.Set\ &Distribution.stable\ frozen	:call Distribution("stable frozen")<CR>
+    amenu &Changelog.Set\ &Distribution.stable\ frozen\ unstable	:call Distribution("stable frozen unstable")<CR>
 
-    amenu Changelog.Set\ &Urgency.&low			:call Urgency("low")<CR>
-    amenu Changelog.Set\ Urgency.&medium		:call Urgency("medium")<CR>
-    amenu Changelog.Set\ Urgency.&high			:call Urgency("high")<CR>
+    amenu &Changelog.Set\ &Urgency.&low			:call Urgency("low")<CR>
+    amenu &Changelog.Set\ &Urgency.&medium		:call Urgency("medium")<CR>
+    amenu &Changelog.Set\ &Urgency.&high			:call Urgency("high")<CR>
 
-    menu Changelog.-sep-				<nul>
-    amenu Changelog.U&nfinalise				:call Unfinalise()<CR>
-    amenu Changelog.&Finalise				:call Finalise()<CR>
+    menu &Changelog.-sep-				<nul>
+    amenu &Changelog.U&nfinalise				:call Unfinalise()<CR>
+    amenu &Changelog.&Finalise				:call Finalise()<CR>
 
     if <SID>Finalised()
 	call <SID>FinaliseMenu()
@@ -228,7 +235,7 @@
 
 augroup changelogMenu
 au BufEnter * if &filetype == "debchangelog" | call <SID>MakeMenu() | endif
-au BufLeave * if &filetype == "debchangelog" | silent! aunmenu Changelog | endif
+au BufLeave * if &filetype == "debchangelog" | silent! aunmenu &Changelog | endif
 augroup END
 
 " }}}
@@ -380,4 +387,8 @@
 
 " }}}
 
+" Restore the previous value of 'cpoptions'.
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
 " vim: set foldmethod=marker:
diff --git a/runtime/ftplugin/desktop.vim b/runtime/ftplugin/desktop.vim
new file mode 100644
index 0000000..bd6fd70
--- /dev/null
+++ b/runtime/ftplugin/desktop.vim
@@ -0,0 +1,13 @@
+" Vim filetype plugin file
+" Language: XDG desktop entry
+" Maintainer: Eisuke Kawashima ( e.kawaschima+vim AT gmail.com )
+" Last Change: 2022-07-26
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = v:true
+
+setl comments=:#
+setl commentstring=#%s
+let b:undo_ftplugin = 'setl com< cms<'
diff --git a/runtime/ftplugin/swayconfig.vim b/runtime/ftplugin/swayconfig.vim
new file mode 100644
index 0000000..45d6bdb
--- /dev/null
+++ b/runtime/ftplugin/swayconfig.vim
@@ -0,0 +1,16 @@
+" Vim filetype plugin file
+" Language: sway config file
+" Original Author: James Eapen <james.eapen@vai.org>
+" Maintainer: James Eapen <james.eapen@vai.org>
+" Version: 0.1
+" Last Change: 2022 June 07
+
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setlocal cms<"
+
+setlocal commentstring=#\ %s