Prism.languages.reason = Prism.languages.extend('clike', { 'comment': { pattern: /(^|[^\\])\/\*[\s\S]*?\*\//, lookbehind: true }, 'string': { pattern: /"(\\(?:\r\n|[\s\S])|[^\\\r\n"])*"/, greedy: true }, // 'class-name' must be matched *after* 'constructor' defined below 'class-name': /\b[A-Z]\w*/, 'keyword': /\b(?:and|as|assert|begin|class|constraint|do|done|downto|else|end|exception|external|for|fun|function|functor|if|in|include|inherit|initializer|lazy|let|method|module|mutable|new|nonrec|object|of|open|or|private|rec|sig|struct|switch|then|to|try|type|val|virtual|when|while|with)\b/, 'operator': /\.{3}|:[:=]|=(?:==?|>)?|<=?|>=?|[|^?'#!~`]|[+\-*\/]\.?|\b(?:mod|land|lor|lxor|lsl|lsr|asr)\b/ }); Prism.languages.insertBefore('reason', 'class-name', { 'character': { pattern: /'(?:\\x[\da-f]{2}|\\o[0-3][0-7][0-7]|\\\d{3}|\\.|[^'])'/, alias: 'string' }, 'constructor': { // Negative look-ahead prevents from matching things like String.capitalize pattern: /\b[A-Z]\w*\b(?!\s*\.)/, alias: 'variable' }, 'label': { pattern: /\b[a-z]\w*(?=::)/, alias: 'symbol' } }); // We can't match functions property, so let's not even try. delete Prism.languages.reason.function;