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

Prism.languages.keyman = {
        'comment': {
                pattern: /\bc .*/i,
                greedy: true
        },
        'string': {
                pattern: /"[^"\r\n]*"|'[^'\r\n]*'/,
                greedy: true
        },
        'virtual-key': {
                pattern: /\[\s*(?:(?:ALT|CAPS|CTRL|LALT|LCTRL|NCAPS|RALT|RCTRL|SHIFT)\s+)*(?:[TKU]_[\w?]+|[A-E]\d\d?|"[^"\r\n]*"|'[^'\r\n]*')\s*\]/i,
                greedy: true,
                alias: 'function' // alias for styles
        },

        // https://help.keyman.com/developer/language/guide/headers
        'header-keyword': {
                pattern: /&\w+/,
                alias: 'bold' // alias for styles
        },
        'header-statement': {
                pattern: /\b(?:bitmap|bitmaps|caps always off|caps on only|copyright|hotkey|language|layout|message|name|shift frees caps|version)\b/i,
                alias: 'bold' // alias for styles
        },

        'rule-keyword': {
                pattern: /\b(?:any|baselayout|beep|call|context|deadkey|dk|if|index|layer|notany|nul|outs|platform|reset|return|save|set|store|use)\b/i,
                alias: 'keyword'
        },
        'structural-keyword': {
                pattern: /\b(?:ansi|begin|group|match|newcontext|nomatch|postkeystroke|readonly|unicode|using keys)\b/i,
                alias: 'keyword'
        },

        'compile-target': {
                pattern: /\$(?:keyman|keymanonly|keymanweb|kmfl|weaver):/i,
                alias: 'property'
        },

        // U+####, x###, d### characters and numbers
        'number': /\b(?:U\+[\dA-F]+|d\d+|x[\da-f]+|\d+)\b/i,
        'operator': /[+>\\$]|\.\./,
        'punctuation': /[()=,]/
};