[Bug classpath/24876] Regex failure

[kaz at maczuka dot gcd dot org]

------- Comment #6 from kaz at maczuka dot gcd dot org  2006-01-22 22:30 -------
omment #5 says:  > Sun's find() correctly finds "address@hidden" but Sun's
matches() > matches "address@hidden" more greedily than
expected > for "+?".   > I am not sure whether this greedy match of Sun's is
correct.  I now think JDK's behavour is correct. "+?" means "not so greedy but
requiring the necessary minimum".  In order to match the whole string against
the regexp, the last ".+?" must match "212.126.219.82".  In fact, GNU
Classpath's implementation works correctly in the following case:  $ java W
'address@hidden' '(.+?)!((.+?)@(.+?))$' true G0 =
address@hidden G1 = rabbit78_ G2 = address@hidden G3
= n=roman G4 = 212.126.219.82  Yes, In order to match the whole string against
the regexp, the last ".+?" must match "212.126.219.82".  The difficult point is
that the same regexp "(.+?)!((.+?)@(.+?))" must behave differently depending on
whether it is used with find() or match().  In the latter case, it must be
treated as if it were "(.+?)!((.+?)@(.+?))$".  


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24876