How to match the following cases with regex:
XYZABC
ABC
but not these:
XYZ*ABC
*ABC
in order to capture the ABC part, which can be anything, including a (second) *?
I've tried the following, but it does not work.
(?:XYZ)?(?!\*)(.+)
You may use this regex with a possessive quantifier which is supported in boost c++ regex engine:
^(?:XYZ)?+(?!\*)(.*)
PS: Used \n inside negated character class for demo purpose only.
RegEx Details:
^: Start(?:XYZ)?*: Match xyz optionally. Note that ?* is possessive quantifier to disallow backtracking(?!\*): Make sure there is no * at the immediate next position(.*): Match 0 or more of any characters and capture the value in group #1