That’s PascalCase, camelCase does not capitalize the first word.

Turns out that it's a contentious topic:

https://en.wikipedia.org/wiki/Camel_case

FWIW I use the same nomenclature as you, but that doesn't make it universal.

New rule needs ~ when * or _ is used inside words, so your example wouldn't need escaping. E.g.,

dis~/cuss/~ing

with a similar caveat for 'obvious' fractions and divisions?

You mean ¾?

Only if you can do that for, say, 937\/997.

937⁄997

You need U+2044 FRACTION SLASH.

I honestly had no idea you could do that in Unicode with arbitrary values. Thank you.