A report from the documentation maintainer

I'd prefer to not match eszet vs. double-s at all, generally. I understand and to a degree follow the reasoning, but I think it would cause more confusion than not. (And your example neatly illustrates this; too much side-knowledge required.)

I _could_ imagine an exception for eszet vs. upper-case double-s, but I'd be surprised if 'grep -i maßen' would find MASSEN as well... (And what about 'SZ' as a capitalization for 'ß'? It is now extremely uncommon, but I've seen this in documents up to the mid-20th century.)

[As an aside, old documents are sometimes inconsistent for eszet vs. double-s in people's names as well, as they sometimes capitalized names and sometimes not, so this is not a new issue. We are not 100% sure what the family name on my mother's side is for that reason. Oh well...]