sooop

" toggle comment line

function! SetCommentPrefix()
    let s:comment_prefix = "#"
    if &filetype == "vim"
        " for vim, inline comment start with \"
        let s:comment_prefix = "\""
    elseif &filetype ==? "c" || &filetype ==? "objc" || &filetype ==? "cpp"
        let s:comment_prefix = "//"
    endif