gistfile1.txt

    function makeOutputDir(inWC, outWC, dir) {
        if (outWC.indexOf('/**/') === -1) return outWC;
        
        var outMask = path.basename(outWC);
        
        inWC = path.dirname(inWC)+'/';
        outWC = path.dirname(outWC)+'/';
        dir = path.normalize(dir);
        
        var inSplit = inWC.split('/**/'),
            outSplit = outWC.split('/**/'),
            dirLeft = dir.slice(0, inSplit[0].length),
            dirRight = dir.slice(inSplit[0].length);
        
        assert(inSplit.length === 2);
        assert(inSplit[0] === dirLeft);
        
        var subDir, wildDir;
        if (inSplit[1].length === 0) {
            subDir = '';
            wildDir = dirRight;
        } else {
            subDir = dirRight.slice(-inSplit[1].length),
            wildDir = dirRight.slice(0, -inSplit[1].length);        
        }
        assert(inSplit[1] === subDir);

        return path.join(outSplit[0], wildDir, outSplit[1], outMask);
    }