Plan 9 from Bell Labs’s /usr/web/sources/contrib/stefanha/root/sys/lib/vim/vimfiles/indent/rst.vim

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Distributed under the MIT License.
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" Vim indent file
" Language:         reStructuredText Documentation Format
" Maintainer:       Nikolai Weibull <[email protected]>
" Latest Revision:  2006-12-20

if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

setlocal indentexpr=GetRSTIndent()
setlocal indentkeys=!^F,o,O
setlocal nosmartindent

if exists("*GetRSTIndent")
  finish
endif

function GetRSTIndent()
  let lnum = prevnonblank(v:lnum - 1)
  if lnum == 0
    return 0
  endif

  let ind = indent(lnum)
  let line = getline(lnum)

  if line =~ '^\s*[-*+]\s'
    let ind = ind + 2
  elseif line =~ '^\s*\d\+.\s'
    let ind = ind + matchend(substitute(line, '^\s*', '', ''), '\d\+.\s\+')
  endif

  let line = getline(v:lnum - 1)

  if line =~ '^\s*$'
    execute lnum
    call search('^\s*\%([-*+]\s\|\d\+.\s\|\.\.\|$\)', 'bW')
    let line = getline('.')
    if line =~ '^\s*[-*+]'
      let ind = ind - 2
    elseif line =~ '^\s*\d\+\.\s'
      let ind = ind - matchend(substitute(line, '^\s*', '', ''),
            \ '\d\+\.\s\+')
    elseif line =~ '^\s*\.\.'
      let ind = ind - 3
    else
      let ind = ind
    endif
  endif

  return ind
endfunction

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