Update runtime files
diff --git a/runtime/ftplugin/tcsh.vim b/runtime/ftplugin/tcsh.vim
index 7e2d959..33f1aab 100644
--- a/runtime/ftplugin/tcsh.vim
+++ b/runtime/ftplugin/tcsh.vim
@@ -1,19 +1,17 @@
 " Vim filetype plugin file
-" Language:	tcsh
-" Maintainer:	Dan Sharp <dwsharp at users dot sourceforge dot net>
-" Last Changed: 20 Jan 2009
-" URL:		http://dwsharp.users.sourceforge.net/vim/ftplugin
+" Language:		tcsh
+" Maintainer:		Doug Kearns <dougkearns@gmail.com>
+" Previous Maintainer:	Dan Sharp <dwsharp at users dot sourceforge dot net>
+" Last Change:		2021 Oct 15
 
 if exists("b:did_ftplugin") | finish | endif
 
-" Make sure the continuation lines below do not cause problems in
-" compatibility mode.
 let s:save_cpo = &cpo
 set cpo-=C
 
 " Define some defaults in case the included ftplugins don't set them.
 let s:undo_ftplugin = ""
-let s:browsefilter = "csh Files (*.csh)\t*.csh\n" .
+let s:browsefilter = "csh Files (*.csh)\t*.csh\n" ..
 	    \	     "All Files (*.*)\t*.*\n"
 
 runtime! ftplugin/csh.vim ftplugin/csh_*.vim ftplugin/csh/*.vim
@@ -27,14 +25,11 @@
     let s:browsefilter = b:browsefilter
 endif
 
-" Change the :browse e filter to primarily show tcsh-related files.
-if has("gui_win32")
-    let  b:browsefilter="tcsh Scripts (*.tcsh)\t*.tcsh\n" . s:browsefilter
+if (has("gui_win32") || has("gui_gtk"))
+    let  b:browsefilter="tcsh Scripts (*.tcsh)\t*.tcsh\n" .. s:browsefilter
 endif
 
-" Undo the stuff we changed.
-let b:undo_ftplugin = "unlet! b:browsefilter | " . s:undo_ftplugin
+let b:undo_ftplugin = "unlet! b:browsefilter | " .. s:undo_ftplugin
 
-" Restore the saved compatibility options.
 let &cpo = s:save_cpo
 unlet s:save_cpo