RegEx to match only character constants and specific escape sequences

Question

I'm trying to match a character constant. I only want single characters and a few escape sequences rather than \ followed by any letter.

This is very similar to this question with the added requirement of specific escape characters. Regular expression to match escaped characters (quotes)

'(\\\[tvrnafb\\\]|.)'

Answer 1

I feel dumb, I just had to remove the period in the other answer and add another character class.

'(\\[tvrnafb\\]|[^\\'])'