2 " Language: Autoconf configure.{ac,in} file
3 " Maintainer: Nikolai Weibull <now@bitwi.se>
4 " Latest Revision: 2006-12-20
5 " TODO: how about nested [()]'s in one line
6 " what's wrong with '\\\@!'?
8 " Only load this indent file when no other was loaded.
9 if exists("b:did_indent")
13 runtime! indent/sh.vim " will set b:did_indent
15 setlocal indentexpr=GetConfigIndent()
16 setlocal indentkeys=!^F,o,O,=then,=do,=else,=elif,=esac,=fi,=fin,=fil,=done
17 setlocal nosmartindent
19 " Only define the function once.
20 if exists("*GetConfigIndent")
24 " get the offset (indent) of the end of the match of 'regexp' in 'line'
25 function s:GetOffsetOf(line, regexp)
26 let end = matchend(a:line, a:regexp)
33 let width = width + &ts - (width % &ts)
40 function GetConfigIndent()
41 " Find a non-blank line above the current line.
42 let lnum = prevnonblank(v:lnum - 1)
44 " Hit the start of the file, use zero indent.
50 let ind = GetShIndent()
51 let line = getline(lnum)
53 " if previous line has unmatched, unescaped opening parentheses,
54 " indent to its position. TODO: not failsafe if multiple ('s
55 if line =~ '\\\@<!([^)]*$'
56 let ind = s:GetOffsetOf(line, '\\\@!(')
59 " if previous line has unmatched opening bracket,
60 " indent to its position. TODO: same as above
62 let ind = s:GetOffsetOf(line, '\[')
65 " if previous line had an unmatched closing parantheses,
66 " indent to the matching opening parantheses
67 if line =~ '[^(]\+\\\@<!)$'
68 call search(')', 'bW')
69 let lnum = searchpair('\\\@<!(', '', ')', 'bWn')
70 let ind = indent(lnum)
73 " if previous line had an unmatched closing bracket,
74 " indent to the matching opening bracket
76 call search(']', 'bW')
77 let lnum = searchpair('\[', '', ']', 'bWn')
78 let ind = indent(lnum)