" Vim indent file" Language:         Autoconf configure.{ac,in} file" Maintainer:       Nikolai Weibull <now@bitwi.se>" Latest Revision:  2006-12-20" TODO:             how about nested [()]'s in one line"                   what's wrong with '\\\@!'? " Only load this indent file when no other was loaded.if exists("b:did_indent")  finishendif runtime! indent/sh.vim          " will set b:did_indent setlocal indentexpr=GetConfigIndent()setlocal indentkeys=!^F,o,O,=then,=do,=else,=elif,=esac,=fi,=fin,=fil,=donesetlocal nosmartindent " Only define the function once.if exists("*GetConfigIndent")  finishendif " get the offset (indent) of the end of the match of 'regexp' in 'line'function s:GetOffsetOf(line, regexp)  let end = matchend(a:line, a:regexp)  let width = 0  let i = 0  while i < end    if a:line[i] != "\t"      let width = width + 1    else      let width = width + &ts - (width % &ts)    endif    let i = i + 1  endwhile  return widthendfunction function GetConfigIndent()  " Find a non-blank line above the current line.  let lnum = prevnonblank(v:lnum - 1)   " Hit the start of the file, use zero indent.  if lnum == 0    return 0  endif   " where to put this  let ind = GetShIndent()  let line = getline(lnum)   " if previous line has unmatched, unescaped opening parentheses,  " indent to its position. TODO: not failsafe if multiple ('s  if line =~ '\\\@<!([^)]*$'    let ind = s:GetOffsetOf(line, '\\\@!(')  endif   " if previous line has unmatched opening bracket,  " indent to its position. TODO: same as above  if line =~ '\[[^]]*$'    let ind = s:GetOffsetOf(line, '\[')  endif   " if previous line had an unmatched closing parantheses,  " indent to the matching opening parantheses  if line =~ '[^(]\+\\\@<!)$'    call search(')', 'bW')    let lnum = searchpair('\\\@<!(', '', ')', 'bWn')    let ind = indent(lnum)  endif   " if previous line had an unmatched closing bracket,  " indent to the matching opening bracket  if line =~ '[^[]\+]$'    call search(']', 'bW')    let lnum = searchpair('\[', '', ']', 'bWn')    let ind = indent(lnum)  endif   return indendfunction