Update of bug #32412 (project grep):
Status: None => Invalid
Open/Closed: Open => Closed
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Follow-up Comment #1:
The plus is a special character in extended regular expressions, so whenever
you want to treat it as a literal "+" you should escape it. Even though grep
will sometimes try to second guess syntactically invalid regular expressions,
the correct solution is to use '^(-|+)RA$' as you did.
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