I want to remove last occurrence of a pattern "\[uU]" and everything after it from a string.
Example:
input: ab00cd\u00FF\U00FF0000
output: ab00cd\u00FF
I am doing this currently with something like lastIndexOf
and substring
and I wonder if there is a Regex way to do it. I figure it might involve lookarounds?
CodePudding user response:
Match \U
that isn't followed by \U
.
You haven't said what language you're using, so the generic solution is:
Search: \[uU](?!.*\[uU]).*
Replace: <blank>
The negative look-ahead (?!.*\[uU])
asserts that \U
(or \u
) do not appear anywhere after the leading match.