We detached this subthread from https://news.ycombinator.com/item?id=44196205 and marked it off topic.
We almost got the PDP-11 working albeit some extensions like floating point arithmetic.
>GNU is free but pretty much abandoned. Support for Windows was (is?) nonexistent.
GNU APL was never abandoned, dev just went a long time without doing a proper release. I believe the Windows issue is just with cygwin, never looked into it since I don't use Windows.
a) “professional” writ large often encompasses academic research, even though it’s also often specifically used in contrast. Language is weird like that. Former and current academics like to have a term for all the stuff we’ve been paid to do, and we usually default to “professional experience” (though current academics do usually say “research experience” because you’re right that professional has the default connotation of corporate employment).
b) the project seems to have been over 2000 lines of APL. That’s not the “small” student project you’re implying, in any language, and in APL that’s quite substantial.
To me professional implies production/real world/paid work, not just an unfinished academic project.
Such poor quality comment.