CodeMirror.defineMode("changes", function(config, modeConfig) { var headerSeperator = /^-+$/; var headerLine = /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) ?\d{1,2} \d{2}:\d{2}(:\d{2})? [A-Z]{3,4} \d{4} - /; var simpleEmail = /^[\w+.-]+@[\w.-]+/; return { token: function(stream) { if (stream.sol()) { if (stream.match(headerSeperator)) { return 'tag'; } if (stream.match(headerLine)) { return 'tag'; } } if (stream.match(simpleEmail)) { return 'string'; } stream.next(); return null; } }; }); CodeMirror.defineMIME("text/x-rpm-changes", "changes");