stylus/vendor-overwrites/codemirror/addon/lint/css-lint.js

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

// Depends on csslint.js from https://github.com/stubbornella/csslint

// declare global: CSSLint

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.registerHelper("lint", "css", function(text) {
  var found = [];
  if (!window.CSSLint) return found;

  /* STYLISH: hack start (part 1) */
  var rules = CSSLint.getRules();
  var allowedRules = ["display-property-grouping", "duplicate-properties", "empty-rules", "errors", "known-properties"];
  CSSLint.clearRules();
  rules.forEach(function(rule) {
    if (allowedRules.indexOf(rule.id) >= 0) {
      CSSLint.addRule(rule);
    }
  });
  /* STYLISH: hack end */

  var results = CSSLint.verify(text), messages = results.messages, message = null;
  for ( var i = 0; i < messages.length; i++) {
    message = messages[i];

    /* STYLISH: hack start (part 2) */
    if (message.type === 'warning') {
       // @font-face {font-family: 'Ampersand'; unicode-range: U+26;}
      if (message.message.indexOf('unicode-range') !== -1) {
        continue;
      }
      else if ( // color: hsl(210, 100%, 2.2%); or color: hsla(210, 100%, 2.2%, 0.3);
        message.message.startsWith('Expected (<color>) but found \'hsl') &&
        /hsla?\(\s*(-?\d+)%?\s*,\s*(-?\d+)%\s*,\s*(-?\d+|-?\d*.\d+)%(\s*,\s*(-?\d+|-?\d*.\d+))?\s*\)/.test(message.message)
      ) {
        continue;
      }
      //
    }
    /* STYLISH: hack end */

    var startLine = message.line -1, endLine = message.line -1, startCol = message.col -1, endCol = message.col;
    found.push({
      from: CodeMirror.Pos(startLine, startCol),
      to: CodeMirror.Pos(endLine, endCol),
      message: message.message,
      severity : message.type
    });
  }
  return found;
});

});