Function funescape

2.0.3/2.0.3.js:1010–1022

( _, escaped, escapedWhitespace )

        // CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
            runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
            funescape = function( _, escaped, escapedWhitespace ) {
                var high = "0x" + escaped - 0x10000;
                // NaN means non-codepoint
                // Support: Firefox
                // Workaround erroneous numeric interpretation of +"0x"
                return high !== high || escapedWhitespace ?
                    escaped :
                    // BMP codepoint
                    high < 0 ?
                        String.fromCharCode( high + 0x10000 ) :
                        // Supplemental Plane codepoint (surrogate pair)
                        String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
            };

// Optimize for push.apply( _, NodeList )
        try {