If you are looking for alternative to kebab case to write identifier in programming language which reserve the - (U+002d) as an operator, chances are good you can use · (U+00B7 · MIDDLE DOT), that we use in middot case . So isMorePleasantToRead, is_more_pleasant_to_read or is·more·pleasant·to·read is up to you.
This is intriguing to me, do you know which (programming) languages tolerate this?
MIDDLE DOT is Other_ID_Continue
I know less about the other languages but it wouldn't surprise me if they did similar things.