Re:CamelCase vs. Underscores: Revisited
by gpderetta on Thursday January 26, 2023 @06:24AM
(#34530376)
Everybody forgets about shell scripts! Bash allows dashes in executable names (how it couldn't) and in function names, but not in variable names, at least not without a lot of effort.
But I think OP meant programming languages, not styling or markup.