Vim 删除成对的字符

今天为了偷懒又往 .vimrc 里面写了点东西,作用是在删除类似于()这种成对出现的字符对的前一个字符时同时删除后面那个…

下面是具体内容:

inoremap <BS> <c-r>=DelPair()<CR>

function DelPair()
    let currentline = getline('.')
    let prechar = currentline[col('.') - 2]
    let fochar = currentline[col('.') - 1]
    if (prechar == '(' && fochar == ')')
        \ || (prechar == '[' && fochar == ']')
        \ || (prechar == '<' && fochar == '>')
        \ || (prechar == '{' && fochar == '}')
        \ || (prechar == '"' && fochar == '"')
        \ || (prechar == "'" && fochar == "'")
        return "\<BS>\<Delete>"
    else
        return "\<BS>"
    endif
endf
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