source: node_modules/prismjs/components/prism-django.js

// Django/Jinja2 syntax definition for Prism.js <http://prismjs.com> syntax highlighter.
// Mostly it works OK but can paint code incorrectly on complex html/template tag combinations.

(function (Prism) {

        Prism.languages.django = {
                'comment': /^\{#[\s\S]*?#\}$/,
                'tag': {
                        pattern: /(^\{%[+-]?\s*)\w+/,
                        lookbehind: true,
                        alias: 'keyword'
                },
                'delimiter': {
                        pattern: /^\{[{%][+-]?|[+-]?[}%]\}$/,
                        alias: 'punctuation'
                },
                'string': {
                        pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
                        greedy: true
                },
                'filter': {
                        pattern: /(\|)\w+/,
                        lookbehind: true,
                        alias: 'function'
                },
                'test': {
                        pattern: /(\bis\s+(?:not\s+)?)(?!not\b)\w+/,
                        lookbehind: true,
                        alias: 'function'
                },
                'function': /\b[a-z_]\w+(?=\s*\()/i,
                'keyword': /\b(?:and|as|by|else|for|if|import|in|is|loop|not|or|recursive|with|without)\b/,
                'operator': /[-+%=]=?|!=|\*\*?=?|\/\/?=?|<[<=>]?|>[=>]?|[&|^~]/,
                'number': /\b\d+(?:\.\d+)?\b/,
                'boolean': /[Ff]alse|[Nn]one|[Tt]rue/,
                'variable': /\b\w+\b/,
                'punctuation': /[{}[\](),.:;]/
        };


        var pattern = /\{\{[\s\S]*?\}\}|\{%[\s\S]*?%\}|\{#[\s\S]*?#\}/g;
        var markupTemplating = Prism.languages['markup-templating'];

        Prism.hooks.add('before-tokenize', function (env) {
                markupTemplating.buildPlaceholders(env, 'django', pattern);
        });
        Prism.hooks.add('after-tokenize', function (env) {
                markupTemplating.tokenizePlaceholders(env, 'django');
        });

        // Add an Jinja2 alias
        Prism.languages.jinja2 = Prism.languages.django;
        Prism.hooks.add('before-tokenize', function (env) {
                markupTemplating.buildPlaceholders(env, 'jinja2', pattern);
        });
        Prism.hooks.add('after-tokenize', function (env) {
                markupTemplating.tokenizePlaceholders(env, 'jinja2');
        });

}(Prism));