updated for version 7.2.394

Problem:    .xz files are not supported.
Solution:   Recognize .xz files so that they can be edited.

runtime/plugin/gzip.vim

 " Vim plugin for editing compressed files.
 " Maintainer: Bram Moolenaar <Bram@vim.org>
-" Last Change: 2009 Jul 01
+" Last Change: 2010 Mar 10
 
 " Exit quickly when:
 " - this plugin was already loaded
@@ -20,21 +20,25 @@ augroup gzip
   "
   " Set binary mode before reading the file.
   " Use "gzip -d", gunzip isn't always available.
-  autocmd BufReadPre,FileReadPre	*.gz,*.bz2,*.Z,*.lzma setlocal bin
+  autocmd BufReadPre,FileReadPre	*.gz,*.bz2,*.Z,*.lzma,*.xz setlocal bin
   autocmd BufReadPost,FileReadPost	*.gz  call gzip#read("gzip -dn")
   autocmd BufReadPost,FileReadPost	*.bz2 call gzip#read("bzip2 -d")
   autocmd BufReadPost,FileReadPost	*.Z   call gzip#read("uncompress")
   autocmd BufReadPost,FileReadPost	*.lzma call gzip#read("lzma -d")
+  autocmd BufReadPost,FileReadPost	*.xz  call gzip#read("xz -d")
   autocmd BufWritePost,FileWritePost	*.gz  call gzip#write("gzip")
   autocmd BufWritePost,FileWritePost	*.bz2 call gzip#write("bzip2")
   autocmd BufWritePost,FileWritePost	*.Z   call gzip#write("compress -f")
   autocmd BufWritePost,FileWritePost	*.lzma call gzip#write("lzma -z")
+  autocmd BufWritePost,FileWritePost	*.xz  call gzip#write("xz -z")
   autocmd FileAppendPre			*.gz  call gzip#appre("gzip -dn")
   autocmd FileAppendPre			*.bz2 call gzip#appre("bzip2 -d")
   autocmd FileAppendPre			*.Z   call gzip#appre("uncompress")
   autocmd FileAppendPre			*.lzma call gzip#appre("lzma -d")
+  autocmd FileAppendPre			*.xz   call gzip#appre("xz -d")
   autocmd FileAppendPost		*.gz  call gzip#write("gzip")
   autocmd FileAppendPost		*.bz2 call gzip#write("bzip2")
   autocmd FileAppendPost		*.Z   call gzip#write("compress -f")
   autocmd FileAppendPost		*.lzma call gzip#write("lzma -z")
+  autocmd FileAppendPost		*.xz call gzip#write("xz -z")
 augroup END

src/version.c

@@ -681,6 +681,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    394,
 /**/
     393,
 /**/