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annotate runtime/colors/check_colors.vim @ 13039:e265f0b93bb4 v8.0.1395

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patch 8.0.1395: it is not easy to see if a colorscheme is well written commit https://github.com/vim/vim/commit/200d0e36bc5384beb9dc76ac75806ac0aecf84ac Author: Bram Moolenaar <Bram@vim.org> Date: Sat Dec 16 18:53:35 2017 +0100 patch 8.0.1395: it is not easy to see if a colorscheme is well written Problem: It is not easy to see if a colorscheme is well written. Solution: Add a script that checks for common mistakes. (Christian Brabandt)
author Christian Brabandt <cb@256bit.org>
date Sat, 16 Dec 2017 19:00:06 +0100
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children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
13039
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1 " This script tests a color scheme for some errors. Load the scheme and source
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2 " this script. e.g. :e colors/desert.vim | :so test_colors.vim
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3 " Will output possible errors.
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4
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5 let s:save_cpo= &cpo
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6 set cpo&vim
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7
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8 func! Test_check_colors()
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9 call cursor(1,1)
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10 let err={}
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11
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12 " 1) Check g:colors_name is existing
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13 if !search('\<\%(g:\)\?colors_name\>', 'cnW')
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14 let err['colors_name'] = 'g:colors_name not set'
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15 else
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16 let err['colors_name'] = 'OK'
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17 endif
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18
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19 " 2) Check for some well-defined highlighting groups
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20 " Some items, check several groups, e.g. Diff, Spell
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21 let hi_groups = ['ColorColumn', 'Diff', 'ErrorMsg', 'Folded',
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22 \ 'FoldColumn', 'IncSearch', 'LineNr', 'ModeMsg', 'MoreMsg', 'NonText',
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23 \ 'Normal', 'Pmenu', 'Todo', 'Search', 'Spell', 'StatusLine', 'TabLine',
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24 \ 'Title', 'Visual', 'WarningMsg', 'WildMenu']
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25 let groups={}
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26 for group in hi_groups
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27 if search('\c@suppress\s\+'.group, 'cnW')
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28 " skip check, if the script contains a line like
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29 " @suppress Visual:
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30 let groups[group] = 'Ignoring '.group
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31 continue
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32 endif
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33 if !search('hi\%[ghlight] \+'.group, 'cnW')
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34 let groups[group] = 'No highlight definition for '.group
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35 continue
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36 endif
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37 if !search('hi\%[ghlight] \+'.group. '.*fg=', 'cnW')
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38 let groups[group] = 'Missing foreground color for '.group
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39 continue
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40 endif
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41 if search('hi\%[ghlight] \+'.group. '.*guibg=', 'cnW') &&
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42 \ !search('hi\%[ghlight] \+'.group. '.*ctermbg=', 'cnW')
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43 let groups[group] = 'Missing bg terminal color for '.group
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44 continue
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45 endif
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46 call search('hi\%[ghlight] \+'.group, 'cW')
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47 " only check in the current line
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48 if !search('guifg', 'cnW', line('.')) || !search('ctermfg', 'cnW', line('.'))
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49 " do not check for background colors, they could be intentionally left out
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50 let groups[group] = 'Missing fg definition for '.group
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51 endif
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52 call cursor(1,1)
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53 endfor
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54 let err['highlight'] = groups
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55
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56 " 3) Check, that it does not set background highlighting
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57 " Doesn't ':hi Normal ctermfg=253 ctermfg=233' also set the background sometimes?
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58 let bg_set='\(set\?\|setl\(ocal\)\?\) .*\(background\|bg\)=\(dark\|light\)'
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59 let bg_let='let \%([&]\%([lg]:\)\?\)\%(background\|bg\)\s*=\s*\([''"]\?\)\w\+\1'
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60 let bg_pat='\%('.bg_set. '\|'.bg_let.'\)'
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61 let line=search(bg_pat, 'cnW')
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62 if search(bg_pat, 'cnW')
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63 exe line
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64 if search('hi \U\w\+\s\+\S', 'cbnW')
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65 let err['background'] = 'Should not set background option after :hi statement'
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66 endif
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67 else
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68 let err['background'] = 'OK'
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69 endif
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70 call cursor(1,1)
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71
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72 " 4) Check, that t_Co is checked
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73 let pat = '[&]t_Co\s*[<>=]=\?\s*\d\+'
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74 if !search(pat, 'ncW')
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75 let err['t_Co'] = 'Does not check terminal for capable colors'
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76 endif
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77
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78 " 5) Initializes correctly, e.g. should have a section like
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79 " hi clear
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80 " if exists("syntax_on")
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81 " syntax reset
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82 " endif
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83 let pat='hi\%[ghlight]\s*clear\n\s*if\s*exists(\([''"]\)syntax_on\1)\n\s*syn\%[tax]\s*reset\n\s*endif'
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84 if !search(pat, 'cnW')
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85 let err['init'] = 'No initialization'
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86 endif
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87
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88 " 6) Does not use :syn on
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89 if search('syn\%[tax]\s\+on', 'cnW')
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90 let err['background'] = 'Should not issue :syn on'
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91 endif
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92
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93 " 7) Does not define filetype specfic groups like vimCommand, htmlTag,
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94 let hi_groups = ['vim', 'html', 'python', 'sh', 'ruby']
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95 for group in hi_groups
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96 let pat='\Chi\%[ghlight]\s*\zs'.group.'\w\+\>'
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97 if search(pat, 'cnW')
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98 let line = search(pat, 'cW')
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99 let err['filetype'] = get(err, 'filetype', 'Should not define: ') . matchstr(getline('.'), pat). ' '
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100 endif
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101 call cursor(1,1)
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102 endfor
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103 let g:err = err
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104
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105 " print Result
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106 call Result(err)
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107 endfu
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108
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109 fu! Result(err)
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110 let do_roups = 0
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111 echohl Title|echomsg "---------------"|echohl Normal
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112 for key in sort(keys(a:err))
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113 if key is# 'highlight'
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114 let do_groups = 1
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115 continue
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116 else
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117 if a:err[key] !~ 'OK'
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118 echohl Title
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119 endif
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120 echomsg printf("%15s: %s", key, a:err[key])
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121 echohl Normal
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122 endif
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123 endfor
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124 echohl Title|echomsg "---------------"|echohl Normal
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125 if do_groups
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126 echohl Title | echomsg "Groups" | echohl Normal
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127 for v1 in sort(keys(a:err['highlight']))
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128 echomsg printf("%25s: %s", v1, a:err['highlight'][v1])
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129 endfor
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130 endif
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131 endfu
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132
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133 call Test_check_colors()
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134
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135 let &cpo = s:save_cpo
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136 unlet s:save_cpo