" Use the same comment string as for Vim files.
autocmd FileType vimperator setlocal commentstring=\"%s
+" Recognize .md as markdown files.
+ autocmd BufRead,BufNewFile *.md set filetype=mkd
+
+" Recognize .test as Tcl files.
+ autocmd BufRead,BufNewFile *.test set filetype=tcl
+
" Use diff filetype for mercurial patches in patch queue.
autocmd BufReadPost */.hg/patches/* set filetype=diff