" Vim indent file" Language:         Makefile" Maintainer:       Nikolai Weibull <now@bitwi.se>" Latest Revision:  2007-05-07 if exists("b:did_indent")  finishendiflet b:did_indent = 1 setlocal indentexpr=GetMakeIndent()setlocal indentkeys=!^F,o,O,<:>,=else,=endifsetlocal nosmartindent if exists("*GetMakeIndent")  finishendif let s:comment_rx = '^\s*#'let s:rule_rx = '^[^ \t#:][^#:]*:\{1,2}\%([^=:]\|$\)'let s:continued_rule_rx = '^[^#:]*:\{1,2}\%([^=:]\|$\)'let s:continuation_rx = '\\$'let s:assignment_rx = '^\s*\h\w*\s*[+?]\==\s*\zs.*\\$'let s:folded_assignment_rx = '^\s*\h\w*\s*[+?]\=='" TODO: This needs to be a lot more restrictive in what it matches.let s:just_inserted_rule_rx = '^\s*[^#:]\+:\{1,2}$'let s:conditional_directive_rx = '^ *\%(ifn\=\%(eq\|def\)\|else\)\>'let s:end_conditional_directive_rx = '^\s*\%(else\|endif\)\>' function s:remove_continuation(line)  return substitute(a:line, s:continuation_rx, "", "")endfunction function GetMakeIndent()  " TODO: Should this perhaps be v:lnum -1?"  let prev_lnum = prevnonblank(v:lnum - 1)  let prev_lnum = v:lnum - 1  if prev_lnum == 0    return 0  endif  let prev_line = getline(prev_lnum)   let prev_prev_lnum = prev_lnum - 1  let prev_prev_line = prev_prev_lnum != 0 ? getline(prev_prev_lnum) : ""   " TODO: Deal with comments.  In comments, continuations aren't interesting.  if prev_line =~ s:continuation_rx    if prev_prev_line =~ s:continuation_rx      return indent(prev_lnum)    elseif prev_line =~ s:rule_rx      return &sw    elseif prev_line =~ s:assignment_rx      call cursor(prev_lnum, 1)      if search(s:assignment_rx, 'W') != 0        return virtcol('.') - 1      else        " TODO: ?        return &sw      endif    else      " TODO: OK, this might be a continued shell command, so perhaps indent      " properly here?  Leave this out for now, but in the next release this      " should be using indent/sh.vim somehow.      "if prev_line =~ '^\t' " s:rule_command_rx      "  if prev_line =~ '^\s\+[@-]\%(if\)\>'      "    return indent(prev_lnum) + 2      "  endif      "endif      return indent(prev_lnum) + &sw    endif  elseif prev_prev_line =~ s:continuation_rx    let folded_line = s:remove_continuation(prev_prev_line) . ' ' . s:remove_continuation(prev_line)    let lnum = prev_prev_lnum - 1    let line = getline(lnum)    while line =~ s:continuation_rx      let folded_line = s:remove_continuation(line) . ' ' . folded_line      let lnum -= 1      let line = getline(lnum)    endwhile    let folded_lnum = lnum + 1    if folded_line =~ s:rule_rx      if getline(v:lnum) =~ s:rule_rx        return 0      else        return &ts      endif    else"    elseif folded_line =~ s:folded_assignment_rx      if getline(v:lnum) =~ s:rule_rx        return 0      else        return indent(folded_lnum)      endif"    else"      " TODO: ?"      return indent(prev_lnum)    endif  elseif prev_line =~ s:rule_rx    if getline(v:lnum) =~ s:rule_rx      return 0    else      return &ts    endif  elseif prev_line =~ s:conditional_directive_rx    return &sw  else    let line = getline(v:lnum)    if line =~ s:just_inserted_rule_rx      return 0    elseif line =~ s:end_conditional_directive_rx      return v:lnum - 1 == 0 ? 0 : indent(v:lnum - 1) - &sw    else      return v:lnum - 1 == 0 ? 0 : indent(v:lnum - 1)    endif  endifendfunction