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?)(?![\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 | function createInline(pattern) {
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17 | pattern = pattern.replace(/<inner>/g, function () { return inner; });
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18 | return RegExp(/((?:^|[^\\])(?:\\{2})*)/.source + '(?:' + pattern + ')');
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19 | }
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20 |
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21 |
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22 | var tableCell = /(?:\\.|``(?:[^`\r\n]|`(?!`))+``|`[^`\r\n]+`|[^\\|\r\n`])+/.source;
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23 | var tableRow = /\|?__(?:\|__)+\|?(?:(?:\n|\r\n?)|(?![\s\S]))/.source.replace(/__/g, function () { return tableCell; });
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24 | var tableLine = /\|?[ \t]*:?-{3,}:?[ \t]*(?:\|[ \t]*:?-{3,}:?[ \t]*)+\|?(?:\n|\r\n?)/.source;
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25 |
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26 |
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27 | Prism.languages.markdown = Prism.languages.extend('markup', {});
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28 | Prism.languages.insertBefore('markdown', 'prolog', {
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29 | 'front-matter-block': {
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30 | pattern: /(^(?:\s*[\r\n])?)---(?!.)[\s\S]*?[\r\n]---(?!.)/,
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31 | lookbehind: true,
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32 | greedy: true,
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33 | inside: {
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34 | 'punctuation': /^---|---$/,
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35 | 'font-matter': {
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36 | pattern: /\S+(?:\s+\S+)*/,
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37 | alias: ['yaml', 'language-yaml'],
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38 | inside: Prism.languages.yaml
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39 | }
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40 | }
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41 | },
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42 | 'blockquote': {
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43 |
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44 | pattern: /^>(?:[\t ]*>)*/m,
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45 | alias: 'punctuation'
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46 | },
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47 | 'table': {
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48 | pattern: RegExp('^' + tableRow + tableLine + '(?:' + tableRow + ')*', 'm'),
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49 | inside: {
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50 | 'table-data-rows': {
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51 | pattern: RegExp('^(' + tableRow + tableLine + ')(?:' + tableRow + ')*$'),
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52 | lookbehind: true,
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53 | inside: {
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54 | 'table-data': {
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55 | pattern: RegExp(tableCell),
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56 | inside: Prism.languages.markdown
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57 | },
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58 | 'punctuation': /\|/
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59 | }
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60 | },
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61 | 'table-line': {
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62 | pattern: RegExp('^(' + tableRow + ')' + tableLine + '$'),
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63 | lookbehind: true,
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64 | inside: {
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65 | 'punctuation': /\||:?-{3,}:?/
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66 | }
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67 | },
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68 | 'table-header-row': {
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69 | pattern: RegExp('^' + tableRow + '$'),
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70 | inside: {
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71 | 'table-header': {
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72 | pattern: RegExp(tableCell),
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73 | alias: 'important',
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74 | inside: Prism.languages.markdown
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75 | },
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76 | 'punctuation': /\|/
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77 | }
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78 | }
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79 | }
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80 | },
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81 | 'code': [
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82 | {
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83 |
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84 | pattern: /((?:^|\n)[ \t]*\n|(?:^|\r\n?)[ \t]*\r\n?)(?: {4}|\t).+(?:(?:\n|\r\n?)(?: {4}|\t).+)*/,
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85 | lookbehind: true,
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86 | alias: 'keyword'
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87 | },
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88 | {
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89 |
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90 |
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91 |
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92 | pattern: /^```[\s\S]*?^```$/m,
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93 | greedy: true,
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94 | inside: {
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95 | 'code-block': {
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96 | pattern: /^(```.*(?:\n|\r\n?))[\s\S]+?(?=(?:\n|\r\n?)^```$)/m,
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97 | lookbehind: true
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98 | },
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99 | 'code-language': {
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100 | pattern: /^(```).+/,
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101 | lookbehind: true
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102 | },
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103 | 'punctuation': /```/
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104 | }
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105 | }
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106 | ],
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107 | 'title': [
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108 | {
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109 |
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110 |
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111 |
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112 |
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113 |
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114 | pattern: /\S.*(?:\n|\r\n?)(?:==+|--+)(?=[ \t]*$)/m,
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115 | alias: 'important',
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116 | inside: {
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117 | punctuation: /==+$|--+$/
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118 | }
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119 | },
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120 | {
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121 |
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122 |
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123 | pattern: /(^\s*)#.+/m,
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124 | lookbehind: true,
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125 | alias: 'important',
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126 | inside: {
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127 | punctuation: /^#+|#+$/
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128 | }
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129 | }
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130 | ],
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131 | 'hr': {
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132 |
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133 |
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134 |
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135 |
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136 | pattern: /(^\s*)([*-])(?:[\t ]*\2){2,}(?=\s*$)/m,
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137 | lookbehind: true,
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138 | alias: 'punctuation'
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139 | },
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140 | 'list': {
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141 |
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142 |
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143 |
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144 |
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145 | pattern: /(^\s*)(?:[*+-]|\d+\.)(?=[\t ].)/m,
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146 | lookbehind: true,
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147 | alias: 'punctuation'
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148 | },
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149 | 'url-reference': {
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150 |
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151 |
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152 |
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153 |
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154 | pattern: /!?\[[^\]]+\]:[\t ]+(?:\S+|<(?:\\.|[^>\\])+>)(?:[\t ]+(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\)))?/,
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155 | inside: {
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156 | 'variable': {
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157 | pattern: /^(!?\[)[^\]]+/,
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158 | lookbehind: true
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159 | },
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160 | 'string': /(?:"(?:\\.|[^"\\])*"|'(?:\\.|[^'\\])*'|\((?:\\.|[^)\\])*\))$/,
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161 | 'punctuation': /^[\[\]!:]|[<>]/
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162 | },
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163 | alias: 'url'
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164 | },
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165 | 'bold': {
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166 |
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167 |
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168 |
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169 |
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170 | pattern: createInline(/\b__(?:(?!_)<inner>|_(?:(?!_)<inner>)+_)+__\b|\*\*(?:(?!\*)<inner>|\*(?:(?!\*)<inner>)+\*)+\*\*/.source),
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171 | lookbehind: true,
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172 | greedy: true,
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173 | inside: {
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174 | 'content': {
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175 | pattern: /(^..)[\s\S]+(?=..$)/,
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176 | lookbehind: true,
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177 | inside: {}
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178 | },
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179 | 'punctuation': /\*\*|__/
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180 | }
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181 | },
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182 | 'italic': {
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183 |
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184 |
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185 |
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186 |
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187 | pattern: createInline(/\b_(?:(?!_)<inner>|__(?:(?!_)<inner>)+__)+_\b|\*(?:(?!\*)<inner>|\*\*(?:(?!\*)<inner>)+\*\*)+\*/.source),
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188 | lookbehind: true,
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189 | greedy: true,
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190 | inside: {
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191 | 'content': {
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192 | pattern: /(^.)[\s\S]+(?=.$)/,
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193 | lookbehind: true,
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194 | inside: {}
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195 | },
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196 | 'punctuation': /[*_]/
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197 | }
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198 | },
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199 | 'strike': {
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200 |
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201 |
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202 |
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203 | pattern: createInline(/(~~?)(?:(?!~)<inner>)+\2/.source),
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204 | lookbehind: true,
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205 | greedy: true,
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206 | inside: {
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207 | 'content': {
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208 | pattern: /(^~~?)[\s\S]+(?=\1$)/,
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209 | lookbehind: true,
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210 | inside: {}
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211 | },
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212 | 'punctuation': /~~?/
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213 | }
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214 | },
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215 | 'code-snippet': {
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216 |
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217 |
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218 | pattern: /(^|[^\\`])(?:``[^`\r\n]+(?:`[^`\r\n]+)*``(?!`)|`[^`\r\n]+`(?!`))/,
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219 | lookbehind: true,
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220 | greedy: true,
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221 | alias: ['code', 'keyword']
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222 | },
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223 | 'url': {
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224 |
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225 |
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226 |
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227 | pattern: createInline(/!?\[(?:(?!\])<inner>)+\](?:\([^\s)]+(?:[\t ]+"(?:\\.|[^"\\])*")?\)|[ \t]?\[(?:(?!\])<inner>)+\])/.source),
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228 | lookbehind: true,
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229 | greedy: true,
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230 | inside: {
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231 | 'operator': /^!/,
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232 | 'content': {
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233 | pattern: /(^\[)[^\]]+(?=\])/,
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234 | lookbehind: true,
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235 | inside: {}
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236 | },
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237 | 'variable': {
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238 | pattern: /(^\][ \t]?\[)[^\]]+(?=\]$)/,
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239 | lookbehind: true
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240 | },
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241 | 'url': {
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242 | pattern: /(^\]\()[^\s)]+/,
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243 | lookbehind: true
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244 | },
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245 | 'string': {
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246 | pattern: /(^[ \t]+)"(?:\\.|[^"\\])*"(?=\)$)/,
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247 | lookbehind: true
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248 | }
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249 | }
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250 | }
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251 | });
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252 |
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253 | ['url', 'bold', 'italic', 'strike'].forEach(function (token) {
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254 | ['url', 'bold', 'italic', 'strike', 'code-snippet'].forEach(function (inside) {
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255 | if (token !== inside) {
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256 | Prism.languages.markdown[token].inside.content.inside[inside] = Prism.languages.markdown[inside];
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257 | }
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258 | });
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259 | });
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260 |
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261 | Prism.hooks.add('after-tokenize', function (env) {
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262 | if (env.language !== 'markdown' && env.language !== 'md') {
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263 | return;
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264 | }
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265 |
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266 | function walkTokens(tokens) {
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267 | if (!tokens || typeof tokens === 'string') {
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268 | return;
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269 | }
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270 |
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271 | for (var i = 0, l = tokens.length; i < l; i++) {
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272 | var token = tokens[i];
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273 |
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274 | if (token.type !== 'code') {
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275 | walkTokens(token.content);
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276 | continue;
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277 | }
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278 |
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279 | |
280 |
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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 |
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286 |
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287 |
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288 |
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289 |
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290 |
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291 |
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292 |
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293 | var codeLang = token.content[1];
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294 | var codeBlock = token.content[3];
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295 |
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296 | if (codeLang && codeBlock &&
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297 | codeLang.type === 'code-language' && codeBlock.type === 'code-block' &&
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298 | typeof codeLang.content === 'string') {
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299 |
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300 |
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301 |
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302 |
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303 | var lang = codeLang.content.replace(/\b#/g, 'sharp').replace(/\b\+\+/g, 'pp');
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304 |
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305 | lang = (/[a-z][\w-]*/i.exec(lang) || [''])[0].toLowerCase();
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306 | var alias = 'language-' + lang;
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307 |
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308 |
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309 | if (!codeBlock.alias) {
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310 | codeBlock.alias = [alias];
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311 | } else if (typeof codeBlock.alias === 'string') {
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312 | codeBlock.alias = [codeBlock.alias, alias];
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313 | } else {
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314 | codeBlock.alias.push(alias);
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315 | }
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316 | }
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317 | }
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318 | }
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319 |
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320 | walkTokens(env.tokens);
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321 | });
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322 |
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323 | Prism.hooks.add('wrap', function (env) {
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324 | if (env.type !== 'code-block') {
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325 | return;
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326 | }
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327 |
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328 | var codeLang = '';
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329 | for (var i = 0, l = env.classes.length; i < l; i++) {
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330 | var cls = env.classes[i];
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331 | var match = /language-(.+)/.exec(cls);
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332 | if (match) {
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333 | codeLang = match[1];
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334 | break;
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335 | }
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336 | }
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337 |
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338 | var grammar = Prism.languages[codeLang];
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339 |
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340 | if (!grammar) {
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341 | if (codeLang && codeLang !== 'none' && Prism.plugins.autoloader) {
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342 | var id = 'md-' + new Date().valueOf() + '-' + Math.floor(Math.random() * 1e16);
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343 | env.attributes['id'] = id;
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344 |
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345 | Prism.plugins.autoloader.loadLanguages(codeLang, function () {
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346 | var ele = document.getElementById(id);
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347 | if (ele) {
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348 | ele.innerHTML = Prism.highlight(ele.textContent, Prism.languages[codeLang], codeLang);
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349 | }
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350 | });
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351 | }
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352 | } else {
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353 | env.content = Prism.highlight(textContent(env.content), grammar, codeLang);
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354 | }
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355 | });
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356 |
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357 | var tagPattern = RegExp(Prism.languages.markup.tag.pattern.source, 'gi');
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358 |
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359 | |
360 |
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361 |
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362 |
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363 |
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364 |
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365 |
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366 | var KNOWN_ENTITY_NAMES = {
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367 | 'amp': '&',
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368 | 'lt': '<',
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369 | 'gt': '>',
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370 | 'quot': '"',
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371 | };
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372 |
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373 |
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374 | var fromCodePoint = String.fromCodePoint || String.fromCharCode;
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375 |
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376 | |
377 |
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378 |
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379 |
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380 |
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381 |
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382 | function textContent(html) {
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383 |
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384 | var text = html.replace(tagPattern, '');
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385 |
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386 |
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387 | text = text.replace(/&(\w{1,8}|#x?[\da-f]{1,8});/gi, function (m, code) {
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388 | code = code.toLowerCase();
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389 |
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390 | if (code[0] === '#') {
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391 | var value;
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392 | if (code[1] === 'x') {
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393 | value = parseInt(code.slice(2), 16);
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394 | } else {
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395 | value = Number(code.slice(1));
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396 | }
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397 |
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398 | return fromCodePoint(value);
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399 | } else {
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400 | var known = KNOWN_ENTITY_NAMES[code];
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401 | if (known) {
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402 | return known;
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403 | }
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404 |
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405 |
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406 | return m;
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407 | }
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408 | });
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409 |
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410 | return text;
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411 | }
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412 |
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413 | Prism.languages.md = Prism.languages.markdown;
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414 |
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415 | }(Prism));
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