the messed up XS.c I posted the other day was due to a posting length limitation on this site.

I'm about to post a discussion regarding the misleading preview of large posts. Thanks for bringing this to my attention.

If you really need to post such large sections then your 2 main options are either to use an off-site location (like a pastebin or a Gitlab snippet or your own site, even) and link to that or else the old favourite of gzip and uuencode.

(massive temporary code section removed) and the discussion is now here.