visualpython
diff --git a/‎js/com/com_util.js
Lines changed: 114 additions & 1 deletion b/‎js/com/com_util.js
Lines changed: 114 additions & 1 deletion
@@ -265,6 +265,117 @@ define([
         return label;
     }
 
+    //============================================================================
+    // Cross-browser RegEx Split
+    //============================================================================
+
+    // This code has been MODIFIED from the code licensed below to not replace the
+    // default browser split.  The license is reproduced here.
+
+    // see http://blog.stevenlevithan.com/archives/cross-browser-split for more info:
+    /*!
+     * Cross-Browser Split 1.1.1
+     * Copyright 2007-2012 Steven Levithan <stevenlevithan.com>
+     * Available under the MIT License
+     * ECMAScript compliant, uniform cross-browser split method
+     */
+
+    /**
+     * Splits a string into an array of strings using a regex or string
+     * separator. Matches of the separator are not included in the result array.
+     * However, if `separator` is a regex that contains capturing groups,
+     * backreferences are spliced into the result each time `separator` is
+     * matched. Fixes browser bugs compared to the native
+     * `String.prototype.split` and can be used reliably cross-browser.
+     * @param {String} str String to split.
+     * @param {RegExp} separator Regex to use for separating
+     *     the string.
+     * @param {Number} [limit] Maximum number of items to include in the result
+     *     array.
+     * @returns {Array} Array of substrings.
+     * @example
+     *
+     * // Basic use
+     * regex_split('a b c d', ' ');
+     * // -> ['a', 'b', 'c', 'd']
+     *
+     * // With limit
+     * regex_split('a b c d', ' ', 2);
+     * // -> ['a', 'b']
+     *
+     * // Backreferences in result array
+     * regex_split('..word1 word2..', /([a-z]+)(\d+)/i);
+     * // -> ['..', 'word', '1', ' ', 'word', '2', '..']
+     */
+     var regex_split = function (str, separator, limit) {
+        var output = [],
+            flags = (separator.ignoreCase ? "i" : "") +
+                    (separator.multiline  ? "m" : "") +
+                    (separator.extended   ? "x" : "") + // Proposed for ES6
+                    (separator.sticky     ? "y" : ""), // Firefox 3+
+            lastLastIndex = 0,
+            separator2, match, lastIndex, lastLength;
+        // Make `global` and avoid `lastIndex` issues by working with a copy
+        separator = new RegExp(separator.source, flags + "g");
+
+        var compliantExecNpcg = typeof(/()??/.exec("")[1]) === "undefined";
+        if (!compliantExecNpcg) {
+            // Doesn't need flags gy, but they don't hurt
+            separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
+        }
+        /* Values for `limit`, per the spec:
+         * If undefined: 4294967295 // Math.pow(2, 32) - 1
+         * If 0, Infinity, or NaN: 0
+         * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
+         * If negative number: 4294967296 - Math.floor(Math.abs(limit))
+         * If other: Type-convert, then use the above rules
+         */
+        limit = typeof(limit) === "undefined" ?
+            -1 >>> 0 : // Math.pow(2, 32) - 1
+            limit >>> 0; // ToUint32(limit)
+        for (match = separator.exec(str); match; match = separator.exec(str)) {
+            // `separator.lastIndex` is not reliable cross-browser
+            lastIndex = match.index + match[0].length;
+            if (lastIndex > lastLastIndex) {
+                output.push(str.slice(lastLastIndex, match.index));
+                // Fix browsers whose `exec` methods don't consistently return `undefined` for
+                // nonparticipating capturing groups
+                if (!compliantExecNpcg && match.length > 1) {
+                    match[0].replace(separator2, function () {
+                        for (var i = 1; i < arguments.length - 2; i++) {
+                            if (typeof(arguments[i]) === "undefined") {
+                                match[i] = undefined;
+                            }
+                        }
+                    });
+                }
+                if (match.length > 1 && match.index < str.length) {
+                    Array.prototype.push.apply(output, match.slice(1));
+                }
+                lastLength = match[0].length;
+                lastLastIndex = lastIndex;
+                if (output.length >= limit) {
+                    break;
+                }
+            }
+            if (separator.lastIndex === match.index) {
+                separator.lastIndex++; // Avoid an infinite loop
+            }
+        }
+        if (lastLastIndex === str.length) {
+            if (lastLength || !separator.test("")) {
+                output.push("");
+            }
+        } else {
+            output.push(str.slice(lastLastIndex));
+        }
+        return output.length > limit ? output.slice(0, limit) : output;
+    };
+
+    //============================================================================
+    // End contributed Cross-browser RegEx Split
+    //============================================================================
+
     return {
         getUUID: getUUID,
         loadCss: loadCss,
@@ -286,7 +397,9 @@ define([
         setIsAPIListRunCode: setIsAPIListRunCode,
         getIsAPIListRunCode: getIsAPIListRunCode,
         kernelExecute: kernelExecute,
-        safeString: safeString
+        safeString: safeString,
+
+        regex_split: regex_split
     }
 
 }); /* function, define */