…no, “unique” doesn’t quite do it justice: I consider the Hugs interpreter to be an extraordinary piece of work (especially considering the choice of implementation language). Perhaps the only other codebase to even remotely approach its complexity for the given task would be the recently-released Miranda(R) implementation (same choice of implementation language).
>_< …and one crucial reason probably was that I built it on a G/Linux OS (I haven’t had a regular install of “those other OSs” since the late 1990s).
From https://github.com/FranklinChen/hugs98-plus-Sep2006/tree/master/README.md :
…let’s ask @FranklinChen (if that’s his repository :-)