single/double quote escapes codebox highlighter

[snippsat]

I don't remember if we have looked at this or it has ever come up.
It's a rare case,usually it it's more code like this.

'a' and 'b'
1 and 2
'l' and '4'
'''c''' and '''d'''
'4' or '7'
# The rare case
'"' and '"'
'"' and '&'

So i don't know if digging into regex for this is worth it,can also mess up something else.