| 1 | (function() {
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| 2 |
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| 3 | if (typeof self === 'undefined' || !self.Prism || !self.document) {
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| 4 | return;
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| 5 | }
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| 6 |
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| 7 | Prism.hooks.add('before-sanity-check', function (env) {
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| 8 | if (env.code) {
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| 9 | var pre = env.element.parentNode;
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| 10 | var clsReg = /(?:^|\s)keep-initial-line-feed(?:\s|$)/;
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| 11 | if (
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| 12 | pre && pre.nodeName.toLowerCase() === 'pre' &&
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| 13 | // Apply only if nor the <pre> or the <code> have the class
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| 14 | (!clsReg.test(pre.className) && !clsReg.test(env.element.className))
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| 15 | ) {
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| 16 | env.code = env.code.replace(/^(?:\r?\n|\r)/, '');
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| 17 | }
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| 18 | }
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| 19 | });
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| 20 |
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| 21 | }());
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