1" Vim indent file 2" Language: Vim script 3" Maintainer: Bram Moolenaar <[email protected]> 4" Last Change: 2016 Jun 27 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\\ 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 34function GetVimIndentIntern() 35 " Find a non-blank line above the current line. 36 let lnum = prevnonblank(v:lnum - 1) 37 38 " If the current line doesn't start with '\' and below a line that starts 39 " with '\', use the indent of the line above it. 40 let cur_text = getline(v:lnum) 41 if cur_text !~ '^\s*\\' 42 while lnum > 0 && getline(lnum) =~ '^\s*\\' 43 let lnum = lnum - 1 44 endwhile 45 endif 46 47 " At the start of the file use zero indent. 48 if lnum == 0 49 return 0 50 endif 51 let prev_text = getline(lnum) 52 53 " Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function 54 " and :else. Add it three times for a line that starts with '\' after 55 " a line that doesn't (or g:vim_indent_cont if it exists). 56 let ind = indent(lnum) 57 if cur_text =~ '^\s*\\' && v:lnum > 1 && prev_text !~ '^\s*\\' 58 if exists("g:vim_indent_cont") 59 let ind = ind + g:vim_indent_cont 60 else 61 let ind = ind + shiftwidth() * 3 62 endif 63 elseif prev_text =~ '^\s*aug\%[roup]\s\+' && prev_text !~ '^\s*aug\%[roup]\s\+[eE][nN][dD]\>' 64 let ind = ind + shiftwidth() 65 else 66 " A line starting with :au does not increment/decrement indent. 67 if prev_text !~ '^\s*au\%[tocmd]' 68 let i = match(prev_text, '\(^\||\)\s*\(if\|wh\%[ile]\|for\|try\|cat\%[ch]\|fina\%[lly]\|fu\%[nction]\|el\%[seif]\)\>') 69 if i >= 0 70 let ind += shiftwidth() 71 if strpart(prev_text, i, 1) == '|' && has('syntax_items') 72 \ && synIDattr(synID(lnum, i, 1), "name") =~ '\(Comment\|String\)$' 73 let ind -= shiftwidth() 74 endif 75 endif 76 endif 77 endif 78 79 " If the previous line contains an "end" after a pipe, but not in an ":au" 80 " command. And not when there is a backslash before the pipe. 81 " And when syntax HL is enabled avoid a match inside a string. 82 let i = match(prev_text, '[^\\]|\s*\(ene\@!\)') 83 if i > 0 && prev_text !~ '^\s*au\%[tocmd]' 84 if !has('syntax_items') || synIDattr(synID(lnum, i + 2, 1), "name") !~ '\(Comment\|String\)$' 85 let ind = ind - shiftwidth() 86 endif 87 endif 88 89 90 " Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry, 91 " :endfun, :else and :augroup END. 92 if cur_text =~ '^\s*\(ene\@!\|cat\|fina\|el\|aug\%[roup]\s\+[eE][nN][dD]\)' 93 let ind = ind - shiftwidth() 94 endif 95 96 return ind 97endfunction 98 99let &cpo = s:keepcpo 100unlet s:keepcpo 101 102" vim:sw=2 103