1 | (function (Prism) {
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2 |
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3 |
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4 | var inner = /(?:\\.|[^\\\n\r]|(?:\n|\r\n?)(?!\n|\r\n?))/.source;
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5 |
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6 | |
7 |
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8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 |
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15 |
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16 |
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17 | function createInline(pattern, starAlternative) {
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18 | pattern = pattern.replace(/<inner>/g, function () { return inner; });
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19 | if (starAlternative) {
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20 | pattern = pattern + '|' + pattern.replace(/_/g, '\\*');
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21 | }
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22 | return RegExp(/((?:^|[^\\])(?:\\{2})*)/.source + '(?:' + pattern + ')');
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23 | }
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24 |
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25 |
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26 | var tableCell = /(?:\\.|``.+?``|`[^`\r\n]+`|[^\\|\r\n`])+/.source;
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27 | var tableRow = /\|?__(?:\|__)+\|?(?:(?:\n|\r\n?)|$)/.source.replace(/__/g, function () { return tableCell; });
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28 | var tableLine = /\|?[ \t]*:?-{3,}:?[ \t]*(?:\|[ \t]*:?-{3,}:?[ \t]*)+\|?(?:\n|\r\n?)/.source;
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29 |
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30 |
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31 | Prism.languages.markdown = Prism.languages.extend('markup', {});
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32 | Prism.languages.insertBefore('markdown', 'prolog', {
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33 | 'blockquote': {
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34 |
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35 | pattern: /^>(?:[\t ]*>)*/m,
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36 | alias: 'punctuation'
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37 | },
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38 | 'table': {
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39 | pattern: RegExp('^' + tableRow + tableLine + '(?:' + tableRow + ')*', 'm'),
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40 | inside: {
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41 | 'table-data-rows': {
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42 | pattern: RegExp('^(' + tableRow + tableLine + ')(?:' + tableRow + ')*$'),
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43 | lookbehind: true,
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44 | inside: {
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45 | 'table-data': {
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46 | pattern: RegExp(tableCell),
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47 | inside: Prism.languages.markdown
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48 | },
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49 | 'punctuation': /\|/
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50 | }
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51 | },
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52 | 'table-line': {
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53 | pattern: RegExp('^(' + tableRow + ')' + tableLine + '$'),
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54 | lookbehind: true,
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55 | inside: {
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56 | 'punctuation': /\||:?-{3,}:?/
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57 | }
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58 | },
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59 | 'table-header-row': {
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60 | pattern: RegExp('^' + tableRow + '$'),
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61 | inside: {
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62 | 'table-header': {
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63 | pattern: RegExp(tableCell),
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64 | alias: 'important',
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65 | inside: Prism.languages.markdown
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66 | },
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67 | 'punctuation': /\|/
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68 | }
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69 | }
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70 | }
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71 | },
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72 | 'code': [
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73 | {
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74 |
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75 | pattern: /((?:^|\n)[ \t]*\n|(?:^|\r\n?)[ \t]*\r\n?)(?: {4}|\t).+(?:(?:\n|\r\n?)(?: {4}|\t).+)*/,
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76 | lookbehind: true,
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77 | alias: 'keyword'
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78 | },
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79 | {
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80 |
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81 |
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82 | pattern: /``.+?``|`[^`\r\n]+`/,
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83 | alias: 'keyword'
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84 | },
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85 | {
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86 |
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87 |
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88 |
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89 | pattern: /^```[\s\S]*?^```$/m,
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90 | greedy: true,
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91 | inside: {
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92 | 'code-block': {
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93 | pattern: /^(```.*(?:\n|\r\n?))[\s\S]+?(?=(?:\n|\r\n?)^```$)/m,
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94 | lookbehind: true
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95 | },
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96 | 'code-language': {
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97 | pattern: /^(```).+/,
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98 | lookbehind: true
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99 | },
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100 | 'punctuation': /```/
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101 | }
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102 | }
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103 | ],
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104 | 'title': [
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105 | {
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106 |
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107 |
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108 |
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109 |
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110 |
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111 | pattern: /\S.*(?:\n|\r\n?)(?:==+|--+)(?=[ \t]*$)/m,
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112 | alias: 'important',
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113 | inside: {
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114 | punctuation: /==+$|--+$/
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115 | }
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116 | },
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117 | {
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118 |
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119 |
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120 | pattern: /(^\s*)#+.+/m,
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121 | lookbehind: true,
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122 | alias: 'important',
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123 | inside: {
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124 | punctuation: /^#+|#+$/
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125 | }
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126 | }
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127 | ],
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128 | 'hr': {
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129 |
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130 |
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131 |
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132 |
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133 | pattern: /(^\s*)([*-])(?:[\t ]*\2){2,}(?=\s*$)/m,
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134 | lookbehind: true,
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135 | alias: 'punctuation'
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136 | },
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137 | 'list': {
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138 |
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139 |
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140 |
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141 |
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142 | pattern: /(^\s*)(?:[*+-]|\d+\.)(?=[\t ].)/m,
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143 | lookbehind: true,
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144 | alias: 'punctuation'
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145 | },
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146 | 'url-reference': {
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147 |
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148 |
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149 |
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150 |
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151 | pattern: /!?\[[^\]]+\]:[\t ]+(?:\S+|<(?:\\.|[^>\\])+>)(?:[\t ]+(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\)))?/,
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152 | inside: {
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153 | 'variable': {
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154 | pattern: /^(!?\[)[^\]]+/,
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155 | lookbehind: true
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156 | },
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157 | 'string': /(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\))$/,
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158 | 'punctuation': /^[\[\]!:]|[<>]/
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159 | },
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160 | alias: 'url'
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161 | },
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162 | 'bold': {
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163 |
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164 |
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165 |
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166 |
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167 | pattern: createInline(/__(?:(?!_)<inner>|_(?:(?!_)<inner>)+_)+__/.source, true),
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168 | lookbehind: true,
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169 | greedy: true,
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170 | inside: {
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171 | 'content': {
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172 | pattern: /(^..)[\s\S]+(?=..$)/,
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173 | lookbehind: true,
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174 | inside: {}
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175 | },
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176 | 'punctuation': /\*\*|__/
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177 | }
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178 | },
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179 | 'italic': {
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180 |
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181 |
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182 |
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183 |
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184 | pattern: createInline(/_(?:(?!_)<inner>|__(?:(?!_)<inner>)+__)+_/.source, true),
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185 | lookbehind: true,
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186 | greedy: true,
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187 | inside: {
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188 | 'content': {
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189 | pattern: /(^.)[\s\S]+(?=.$)/,
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190 | lookbehind: true,
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191 | inside: {}
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192 | },
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193 | 'punctuation': /[*_]/
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194 | }
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195 | },
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196 | 'strike': {
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197 |
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198 |
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199 | pattern: createInline(/(~~?)(?:(?!~)<inner>)+?\2/.source, false),
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200 | lookbehind: true,
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201 | greedy: true,
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202 | inside: {
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203 | 'content': {
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204 | pattern: /(^~~?)[\s\S]+(?=\1$)/,
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205 | lookbehind: true,
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206 | inside: {}
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207 | },
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208 | 'punctuation': /~~?/
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209 | }
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210 | },
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211 | 'url': {
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212 |
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213 |
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214 |
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215 | pattern: createInline(/!?\[(?:(?!\])<inner>)+\](?:\([^\s)]+(?:[\t ]+"(?:\\.|[^"\\])*")?\)| ?\[(?:(?!\])<inner>)+\])/.source, false),
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216 | lookbehind: true,
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217 | greedy: true,
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218 | inside: {
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219 | 'variable': {
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220 | pattern: /(\[)[^\]]+(?=\]$)/,
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221 | lookbehind: true
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222 | },
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223 | 'content': {
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224 | pattern: /(^!?\[)[^\]]+(?=\])/,
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225 | lookbehind: true,
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226 | inside: {}
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227 | },
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228 | 'string': {
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229 | pattern: /"(?:\\.|[^"\\])*"(?=\)$)/
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230 | }
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231 | }
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232 | }
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233 | });
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234 |
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235 | ['url', 'bold', 'italic', 'strike'].forEach(function (token) {
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236 | ['url', 'bold', 'italic', 'strike'].forEach(function (inside) {
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237 | if (token !== inside) {
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238 | Prism.languages.markdown[token].inside.content.inside[inside] = Prism.languages.markdown[inside];
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239 | }
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240 | });
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241 | });
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242 |
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243 | Prism.hooks.add('after-tokenize', function (env) {
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244 | if (env.language !== 'markdown' && env.language !== 'md') {
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245 | return;
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246 | }
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247 |
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248 | function walkTokens(tokens) {
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249 | if (!tokens || typeof tokens === 'string') {
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250 | return;
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251 | }
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252 |
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253 | for (var i = 0, l = tokens.length; i < l; i++) {
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254 | var token = tokens[i];
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255 |
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256 | if (token.type !== 'code') {
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257 | walkTokens(token.content);
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258 | continue;
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259 | }
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260 |
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261 | |
262 |
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263 |
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264 |
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265 |
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266 |
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267 |
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268 |
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269 |
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270 |
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271 |
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272 |
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273 |
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274 |
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275 | var codeLang = token.content[1];
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276 | var codeBlock = token.content[3];
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277 |
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278 | if (codeLang && codeBlock &&
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279 | codeLang.type === 'code-language' && codeBlock.type === 'code-block' &&
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280 | typeof codeLang.content === 'string') {
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281 |
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282 |
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283 |
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284 |
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285 | var lang = codeLang.content.replace(/\b#/g, 'sharp').replace(/\b\+\+/g, 'pp')
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286 |
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287 | lang = (/[a-z][\w-]*/i.exec(lang) || [''])[0].toLowerCase();
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288 | var alias = 'language-' + lang;
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289 |
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290 |
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291 | if (!codeBlock.alias) {
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292 | codeBlock.alias = [alias];
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293 | } else if (typeof codeBlock.alias === 'string') {
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294 | codeBlock.alias = [codeBlock.alias, alias];
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295 | } else {
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296 | codeBlock.alias.push(alias);
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297 | }
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298 | }
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299 | }
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300 | }
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301 |
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302 | walkTokens(env.tokens);
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303 | });
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304 |
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305 | Prism.hooks.add('wrap', function (env) {
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306 | if (env.type !== 'code-block') {
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307 | return;
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308 | }
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309 |
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310 | var codeLang = '';
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311 | for (var i = 0, l = env.classes.length; i < l; i++) {
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312 | var cls = env.classes[i];
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313 | var match = /language-(.+)/.exec(cls);
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314 | if (match) {
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315 | codeLang = match[1];
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316 | break;
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317 | }
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318 | }
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319 |
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320 | var grammar = Prism.languages[codeLang];
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321 |
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322 | if (!grammar) {
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323 | if (codeLang && codeLang !== 'none' && Prism.plugins.autoloader) {
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324 | var id = 'md-' + new Date().valueOf() + '-' + Math.floor(Math.random() * 1e16);
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325 | env.attributes['id'] = id;
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326 |
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327 | Prism.plugins.autoloader.loadLanguages(codeLang, function () {
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328 | var ele = document.getElementById(id);
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329 | if (ele) {
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330 | ele.innerHTML = Prism.highlight(ele.textContent, Prism.languages[codeLang], codeLang);
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331 | }
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332 | });
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333 | }
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334 | } else {
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335 |
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336 | var code = env.content.replace(/</g, '<').replace(/&/g, '&');
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337 |
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338 | env.content = Prism.highlight(code, grammar, codeLang);
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339 | }
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340 | });
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341 |
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342 | Prism.languages.md = Prism.languages.markdown;
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343 |
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344 | }(Prism));
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