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[Bug regex/52] Repeated and nested subexpressions (reproducible in most other engines)


http://sourceware.org/bugzilla/show_bug.cgi?id=52

--- Comment #12 from Rich Felker <bugdal at aerifal dot cx> ---
> The same "bug" is present in hardly every regular expression matcher,

Citation needed. GNU regex is the only implementation I've seen with this bug
that purports to be an implementation of POSIX RE.

The implementation we have in musl, which is based on TRE, passes the tests in
this bug report just fine.

As for the RH bug report, the reason I saw it as adding urgency is that it
shows how this bug can affect whether or not the regex matches at all, as
opposed to "just" a pedantic matter of extraneous data in the resulting
subexpression match array.

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