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86 lines
2.2 KiB
VimL
86 lines
2.2 KiB
VimL
" Vim indent file
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" Language: Autoconf configure.{ac,in} file
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" Maintainer: Doug Kearns <dougkearns@gmail.com>
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" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
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" Last Change: 24 Sep 2021
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" TODO: how about nested [()]'s in one line what's wrong with '\\\@!'?
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" Only load this indent file when no other was loaded.
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if exists("b:did_indent")
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finish
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endif
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runtime! indent/sh.vim " will set b:did_indent
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setlocal indentexpr=GetConfigIndent()
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setlocal indentkeys=!^F,o,O,=then,=do,=else,=elif,=esac,=fi,=fin,=fil,=done
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setlocal nosmartindent
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let b:undo_indent = "setl inde< indk< si<"
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" Only define the function once.
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if exists("*GetConfigIndent")
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finish
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endif
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" get the offset (indent) of the end of the match of 'regexp' in 'line'
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function s:GetOffsetOf(line, regexp)
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let end = matchend(a:line, a:regexp)
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let width = 0
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let i = 0
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while i < end
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if a:line[i] != "\t"
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let width = width + 1
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else
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let width = width + &ts - (width % &ts)
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endif
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let i = i + 1
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endwhile
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return width
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endfunction
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function GetConfigIndent()
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" Find a non-blank line above the current line.
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let lnum = prevnonblank(v:lnum - 1)
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" Hit the start of the file, use zero indent.
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if lnum == 0
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return 0
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endif
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" where to put this
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let ind = GetShIndent()
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let line = getline(lnum)
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" if previous line has unmatched, unescaped opening parentheses,
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" indent to its position. TODO: not failsafe if multiple ('s
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if line =~ '\\\@<!([^)]*$'
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let ind = s:GetOffsetOf(line, '\\\@!(')
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endif
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" if previous line has unmatched opening bracket,
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" indent to its position. TODO: same as above
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if line =~ '\[[^]]*$'
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let ind = s:GetOffsetOf(line, '\[')
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endif
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" if previous line had an unmatched closing parentheses,
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" indent to the matching opening parentheses
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if line =~ '[^(]\+\\\@<!)$'
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call search(')', 'bW')
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let lnum = searchpair('\\\@<!(', '', ')', 'bWn')
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let ind = indent(lnum)
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endif
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" if previous line had an unmatched closing bracket,
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" indent to the matching opening bracket
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if line =~ '[^[]\+]$'
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call search(']', 'bW')
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let lnum = searchpair('\[', '', ']', 'bWn')
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let ind = indent(lnum)
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endif
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return ind
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endfunction
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