:verbose autocmd FileWritePost
--- Auto-Commands ---
gzip  FileWritePost
    *.gz      call gzip#write("gzip")
        Last set from /usr/share/vim/vim74/plugin/gzip.vim
    *.bz2     call gzip#write("bzip2")
        Last set from /usr/share/vim/vim74/plugin/gzip.vim
    *.Z       call gzip#write("compress -f")
        Last set from /usr/share/vim/vim74/plugin/gzip.vim
    *.lzma    call gzip#write("lzma -z")
        Last set from /usr/share/vim/vim74/plugin/gzip.vim
    *.xz      call gzip#write("xz -z")
        Last set from /usr/share/vim/vim74/plugin/gzip.vim
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