*hypf*

You can call other batch files via the call command and pass parameters as well. Well, suppose you have a plethora of useful functions but you don't want a batch file for each of them or copy them into all batches that use them.

With a simple pattern you can concentrate them into one batch file. I've prepared this here, along with a bit of stuff you might need to do to ensure it's working:

The code above consists of a bit initialization code, namely the set target=%1 and shift to get the label we want to jump to and return everything to normal for the following code. The get_param_list is mainly there so we have some weird code to look at and have a bit of debugging stuff in place for testing. The rest are labels that mark the subroutines, ending with a goto :EOF each. The batch itself is nothing more than some kind of switch statement, selecting the function to execute with the first parameter.

Voilà, we got some kind of libraries or namespaces. If you want, you can nest them, I leave that as an exercise for the reader.