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1 " Vim indent file
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2 " Language: Tcl
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3 " Maintainer: Nikolai Weibull <source@pcppopper.org>
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4 " URL: http://www.pcppopper.org/vim/indent/pcp/tcl/
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5 " Latest Revision: 2004-05-21
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6 " arch-tag: 64fab1fa-d670-40ab-a191-55678f20ceb0
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7
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8 " only load this indent file when no other was loaded.
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9 if exists("b:did_indent")
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10 finish
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11 endif
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12
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13 let b:did_indent = 1
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14
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15 setlocal indentexpr=GetTclIndent()
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16 setlocal indentkeys-=:,0#
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17 setlocal indentkeys+=0]
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18
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19 " only define the function once.
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20 if exists("*GetTclIndent")
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21 finish
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22 endif
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23
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24 function s:PrevNonBlankNonComment(lnum)
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25 let lnum = prevnonblank(a:lnum)
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26 while lnum > 0
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27 let line = getline(lnum)
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28 if line !~ '^\s*\(#\|$\)'
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29 break
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30 endif
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31 let lnum = prevnonblank(lnum - 1)
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32 endwhile
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33 return lnum
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34 endfunction
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35
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36 function! GetTclIndent()
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37 let lnum = s:PrevNonBlankNonComment(v:lnum - 1)
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38
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39 if lnum == 0
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40 return 0
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41 endif
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42
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43 let line = getline(lnum)
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44 let ind = indent(lnum)
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45
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46 " TODO: Possible improvement, check that 'begin' and 'end' aren't inside a
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47 " comment or string. This will mess it up. As I am pressed for time and
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48 " stuff like this is unlikely to happen I won't deal with it in this
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49 " version.
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50 let open = 0
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51 let begin = match(line, '{', 0)
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52 while begin > -1
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53 let end = match(line, '}', begin + 1)
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54 if end < 0
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55 let open = open + 1
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56 else
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57 let tmp = match(line, '{', begin + 1)
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58 if tmp != -1 && tmp < end
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59 let open = open + 1
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60 endif
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61 endif
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62 let begin = match(line, '{', begin + 1)
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63 endwhile
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64
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65 let begin = match(line, '[', 0)
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66 while begin > -1
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67 let end = match(line, ']', begin + 1)
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68 if end < 0
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69 let open = open + 1
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70 else
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71 let tmp = match(line, '{', begin + 1)
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72 if tmp != -1 && tmp < end
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73 let open = open + 1
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74 endif
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75 endif
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76 let begin = match(line, '{', begin + 1)
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77 endwhile
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78
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79 let close = 0
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80 let prev = 0
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81 let end = matchend(line, '^\s*}.*}', prev)
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82 while end > -1
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83 let begin = match(line, '{', prev + 1)
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84 if begin < 0 || begin > prev
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85 let close = close + 1
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86 endif
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87 let prev = end
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88 let end = match(line, '}', prev + 1)
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89 endwhile
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90
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91 let prev = 0
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92 let end = match(line, ']', prev)
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93 while end > -1
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94 let begin = match(line, '[', prev + 1)
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95 if begin < 0 || begin > prev
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96 let close = close + 1
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97 endif
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98 let prev = end
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99 let end = match(line, ']', prev + 1)
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100 endwhile
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101
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102 let ind = ind + (open - close) * &sw
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103
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104 let line = getline(v:lnum)
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105
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106 let close = 0
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107 let prev = 0
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108 let end = match(line, '}', prev)
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109 while end > -1
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110 let begin = match(line, '{', prev + 1)
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111 if begin < 0 || begin > prev
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112 let close = close + 1
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113 endif
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114 let prev = end
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115 let end = match(line, '}', prev + 1)
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116 endwhile
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117
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118 let ind = ind - close * &sw
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119
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120 return ind >= 0 ? ind : 0
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121 endfunction
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122
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123 " vim: set sts=2 sw=2:
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