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annotate runtime/indent/vim.vim @ 21716:ba99b55d3fb7

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Added tag v8.2.1407 for changeset 571832713efa4381d7390f0756b5db03a05301db
author Bram Moolenaar <Bram@vim.org>
date Sun, 09 Aug 2020 17:30:04 +0200
parents 3a1ed539ae2a
children a3bb84cd0f59
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 " Vim indent file
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2 " Language: Vim script
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3 " Maintainer: Bram Moolenaar <Bram@vim.org>
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4 " Last Change: 2020 Jul 19
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5
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6 " Only load this indent file when no other was loaded.
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7 if exists("b:did_indent")
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8 finish
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9 endif
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10 let b:did_indent = 1
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11
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12 setlocal indentexpr=GetVimIndent()
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13 setlocal indentkeys+==end,=},=else,=cat,=fina,=END,0\\,0=\"\\\
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14 setlocal indentkeys-=0#
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15
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16 let b:undo_indent = "setl indentkeys< indentexpr<"
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17
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18 " Only define the function once.
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19 if exists("*GetVimIndent")
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20 finish
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21 endif
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22 let s:keepcpo= &cpo
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23 set cpo&vim
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24
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25 function GetVimIndent()
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26 let ignorecase_save = &ignorecase
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27 try
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28 let &ignorecase = 0
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29 return GetVimIndentIntern()
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30 finally
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31 let &ignorecase = ignorecase_save
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32 endtry
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33 endfunc
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34
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35 let s:lineContPat = '^\s*\(\\\|"\\ \)'
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36
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37 function GetVimIndentIntern()
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38 " Find a non-blank line above the current line.
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39 let lnum = prevnonblank(v:lnum - 1)
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40
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41 " If the current line doesn't start with '\' or '"\ ' and below a line that
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42 " starts with '\' or '"\ ', use the indent of the line above it.
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43 let cur_text = getline(v:lnum)
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44 if cur_text !~ s:lineContPat
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45 while lnum > 0 && getline(lnum) =~ s:lineContPat
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46 let lnum = lnum - 1
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47 endwhile
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48 endif
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49
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50 " At the start of the file use zero indent.
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51 if lnum == 0
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52 return 0
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53 endif
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54 let prev_text = getline(lnum)
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55
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56 " Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function
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57 " and :else. Add it three times for a line that starts with '\' or '"\ '
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58 " after a line that doesn't (or g:vim_indent_cont if it exists).
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59 let ind = indent(lnum)
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60
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61 " In heredoc indenting works completely differently.
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62 if has('syntax_items')
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63 let syn_here = synIDattr(synID(v:lnum, 1, 1), "name")
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64 if syn_here =~ 'vimLetHereDocStop'
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65 " End of heredoc: use indent of matching start line
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66 let lnum = v:lnum - 1
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67 while lnum > 0
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68 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc'
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69 return indent(lnum)
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70 endif
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71 let lnum -= 1
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72 endwhile
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73 return 0
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74 endif
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75 if syn_here =~ 'vimLetHereDoc'
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76 if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc'
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77 " First line in heredoc: increase indent
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78 return ind + shiftwidth()
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79 endif
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80 " Heredoc continues: no change in indent
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81 return ind
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82 endif
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83 endif
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84
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85 if cur_text =~ s:lineContPat && v:lnum > 1 && prev_text !~ s:lineContPat
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86 if exists("g:vim_indent_cont")
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87 let ind = ind + g:vim_indent_cont
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88 else
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89 let ind = ind + shiftwidth() * 3
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90 endif
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91 elseif prev_text =~ '^\s*aug\%[roup]\s\+' && prev_text !~ '^\s*aug\%[roup]\s\+[eE][nN][dD]\>'
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92 let ind = ind + shiftwidth()
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93 else
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94 " A line starting with :au does not increment/decrement indent.
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95 if prev_text !~ '^\s*au\%[tocmd]'
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96 let i = match(prev_text, '\(^\||\)\s*\({\|\(if\|wh\%[ile]\|for\|try\|cat\%[ch]\|fina\%[lly]\|fu\%[nction]\|def\|el\%[seif]\)\>\)')
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97 if i >= 0
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98 let ind += shiftwidth()
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99 if strpart(prev_text, i, 1) == '|' && has('syntax_items')
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100 \ && synIDattr(synID(lnum, i, 1), "name") =~ '\(Comment\|String\)$'
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101 let ind -= shiftwidth()
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102 endif
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103 endif
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104 endif
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105 endif
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106
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107 " If the previous line contains an "end" after a pipe, but not in an ":au"
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108 " command. And not when there is a backslash before the pipe.
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109 " And when syntax HL is enabled avoid a match inside a string.
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110 let i = match(prev_text, '[^\\]|\s*\(ene\@!\)')
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111 if i > 0 && prev_text !~ '^\s*au\%[tocmd]'
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112 if !has('syntax_items') || synIDattr(synID(lnum, i + 2, 1), "name") !~ '\(Comment\|String\)$'
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113 let ind = ind - shiftwidth()
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114 endif
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115 endif
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116
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117
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118 " Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry,
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119 " :endfun, :enddef, :else and :augroup END.
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120 if cur_text =~ '^\s*\(ene\@!\|}\|cat\|fina\|el\|aug\%[roup]\s\+[eE][nN][dD]\)'
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121 let ind = ind - shiftwidth()
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122 endif
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123
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124 return ind
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125 endfunction
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126
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127 let &cpo = s:keepcpo
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128 unlet s:keepcpo
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129
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130 " vim:sw=2