" Vim indent file " Language: Makefile " Maintainer: Nikolai Weibull " Latest Revision: 2007-05-07 if exists("b:did_indent") finish endif let b:did_indent = 1 setlocal indentexpr=GetMakeIndent() setlocal indentkeys=!^F,o,O,<:>,=else,=endif setlocal nosmartindent if exists("*GetMakeIndent") finish endif 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 endif endfunction