.vimrc

function! s:uniq(list) "{{{
    let dict = {}
    let counter = 1
    for i in a:list
        let dict[i] = counter
        let counter += 1
    endfor

    function! s:cmp(a, b)
        return a:a == a:b ? 0 : a:a > a:b ? 1 : -1
    endfunction

    function! s:_(a, b)
        let [a, b] = [a:a, a:b]
        return eval(s:expr)
    endfunction

    try
        let s:expr = 's:cmp(dict[a], dict[b])'
        return sort(keys(dict), 's:_')
    finally
        " コメントアウト有りだとE133: return not inside function
        " コメントアウト無しだとE130: Unknown function s:cmp
        "
        " なんだかちゃんとfunctionとendfunctionの対応が理解できてないような...
        "
        delfunc s:cmp
        delfunc s:_
        unlet s:expr
    endtry
endfunction "}}}