Yes it does. It's that much code that needs to parse config files and translate it to useful configuration. Oh and of course it needs to be backwards-compatible

Yes it does. It's that much code that needs to parse config files and translate it to useful configuration. Oh and of course it needs to be backwards-compatible. The dwm authors believe there already is something to write your configuration, parse it, test that its syntax is valid and use it to configure the thing: the C toolchain.