1" Vim indent file 2" Language: Vim script 3" Maintainer: Bram Moolenaar <[email protected]> 4" Last Change: 2019 Oct 31 5 6" Only load this indent file when no other was loaded. 7if exists("b:did_indent") 8 finish 9endif 10let b:did_indent = 1 11 12setlocal indentexpr=GetVimIndent() 13setlocal indentkeys+==end,=},=else,=cat,=fina,=END,0\\,0=\"\\\ 14 15let b:undo_indent = "setl indentkeys< indentexpr<" 16 17" Only define the function once. 18if exists("*GetVimIndent") 19 finish 20endif 21let s:keepcpo= &cpo 22set cpo&vim 23 24function GetVimIndent() 25 let ignorecase_save = &ignorecase 26 try 27 let &ignorecase = 0 28 return GetVimIndentIntern() 29 finally 30 let &ignorecase = ignorecase_save 31 endtry 32endfunc 33 34let s:lineContPat = '^\s*\(\\\|"\\ \)' 35 36function GetVimIndentIntern() 37 " Find a non-blank line above the current line. 38 let lnum = prevnonblank(v:lnum - 1) 39 40 " If the current line doesn't start with '\' or '"\ ' and below a line that 41 " starts with '\' or '"\ ', use the indent of the line above it. 42 let cur_text = getline(v:lnum) 43 if cur_text !~ s:lineContPat 44 while lnum > 0 && getline(lnum) =~ s:lineContPat 45 let lnum = lnum - 1 46 endwhile 47 endif 48 49 " At the start of the file use zero indent. 50 if lnum == 0 51 return 0 52 endif 53 let prev_text = getline(lnum) 54 55 " Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function 56 " and :else. Add it three times for a line that starts with '\' or '"\ ' 57 " after a line that doesn't (or g:vim_indent_cont if it exists). 58 let ind = indent(lnum) 59 60 " In heredoc indenting works completely differently. 61 if has('syntax_items') 62 let syn_here = synIDattr(synID(v:lnum, 1, 1), "name") 63 if syn_here =~ 'vimLetHereDocStop' 64 " End of heredoc: use indent of matching start line 65 let lnum = v:lnum - 1 66 while lnum > 0 67 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc' 68 return indent(lnum) 69 endif 70 let lnum -= 1 71 endwhile 72 return 0 73 endif 74 if syn_here =~ 'vimLetHereDoc' 75 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc' 76 " First line in heredoc: increase indent 77 return ind + shiftwidth() 78 endif 79 " Heredoc continues: no change in indent 80 return ind 81 endif 82 endif 83 84 if cur_text =~ s:lineContPat && v:lnum > 1 && prev_text !~ s:lineContPat 85 if exists("g:vim_indent_cont") 86 let ind = ind + g:vim_indent_cont 87 else 88 let ind = ind + shiftwidth() * 3 89 endif 90 elseif prev_text =~ '^\s*aug\%[roup]\s\+' && prev_text !~ '^\s*aug\%[roup]\s\+[eE][nN][dD]\>' 91 let ind = ind + shiftwidth() 92 else 93 " A line starting with :au does not increment/decrement indent. 94 if prev_text !~ '^\s*au\%[tocmd]' 95 let i = match(prev_text, '\(^\||\)\s*\({\|\(if\|wh\%[ile]\|for\|try\|cat\%[ch]\|fina\%[lly]\|fu\%[nction]\|def\|el\%[seif]\)\>\)') 96 if i >= 0 97 let ind += shiftwidth() 98 if strpart(prev_text, i, 1) == '|' && has('syntax_items') 99 \ && synIDattr(synID(lnum, i, 1), "name") =~ '\(Comment\|String\)$' 100 let ind -= shiftwidth() 101 endif 102 endif 103 endif 104 endif 105 106 " If the previous line contains an "end" after a pipe, but not in an ":au" 107 " command. And not when there is a backslash before the pipe. 108 " And when syntax HL is enabled avoid a match inside a string. 109 let i = match(prev_text, '[^\\]|\s*\(ene\@!\)') 110 if i > 0 && prev_text !~ '^\s*au\%[tocmd]' 111 if !has('syntax_items') || synIDattr(synID(lnum, i + 2, 1), "name") !~ '\(Comment\|String\)$' 112 let ind = ind - shiftwidth() 113 endif 114 endif 115 116 117 " Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry, 118 " :endfun, :enddef, :else and :augroup END. 119 if cur_text =~ '^\s*\(ene\@!\|}\|cat\|fina\|el\|aug\%[roup]\s\+[eE][nN][dD]\)' 120 let ind = ind - shiftwidth() 121 endif 122 123 return ind 124endfunction 125 126let &cpo = s:keepcpo 127unlet s:keepcpo 128 129" vim:sw=2 130