Prism.languages.scss = Prism.languages.extend('css', { 'comment': { pattern: /(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/, lookbehind: true }, 'atrule': { pattern: /@[\w-]+(?:\([^()]+\)|[^(])*?(?=\s+[{;])/, inside: { 'rule': /@[\w-]+/ // See rest below } }, // url, compassified 'url': /(?:[-a-z]+-)*url(?=\()/i, // CSS selector regex is not appropriate for Sass // since there can be lot more things (var, @ directive, nesting..) // a selector must start at the end of a property or after a brace (end of other rules or nesting) // it can contain some characters that aren't used for defining rules or end of selector, & (parent selector), or interpolated variable // the end of a selector is found when there is no rules in it ( {} or {\s}) or if there is a property (because an interpolated var // can "pass" as a selector- e.g: proper#{$erty}) // this one was hard to do, so please be careful if you edit this one :) 'selector': { // Initial look-ahead is used to prevent matching of blank selectors pattern: /(?=\S)[^@;{}()]?(?:[^@;{}()]|&|#\{\$[-\w]+\})+(?=\s*\{(?:\}|\s|[^}]+[:{][^}]+))/m, inside: { 'parent': { pattern: /&/, alias: 'important' }, 'placeholder': /%[-\w]+/, 'variable': /\$[-\w]+|#\{\$[-\w]+\}/ } } }); Prism.languages.insertBefore('scss', 'atrule', { 'keyword': [ /@(?:if|else(?: if)?|for|each|while|import|extend|debug|warn|mixin|include|function|return|content)/i, { pattern: /( +)(?:from|through)(?= )/, lookbehind: true } ] }); Prism.languages.scss.property = { pattern: /(?:[\w-]|\$[-\w]+|#\{\$[-\w]+\})+(?=\s*:)/i, inside: { 'variable': /\$[-\w]+|#\{\$[-\w]+\}/ } }; Prism.languages.insertBefore('scss', 'important', { // var and interpolated vars 'variable': /\$[-\w]+|#\{\$[-\w]+\}/ }); Prism.languages.insertBefore('scss', 'function', { 'placeholder': { pattern: /%[-\w]+/, alias: 'selector' }, 'statement': { pattern: /\B!(?:default|optional)\b/i, alias: 'keyword' }, 'boolean': /\b(?:true|false)\b/, 'null': /\bnull\b/, 'operator': { pattern: /(\s)(?:[-+*\/%]|[=!]=|<=?|>=?|and|or|not)(?=\s)/, lookbehind: true } }); Prism.languages.scss['atrule'].inside.rest = Prism.util.clone(Prism.languages.scss);