> Is the warning erroneous?

if the meaning of {n}+ hasn't be deprecated or changed its a totally wrong warning.

Please run my code with 5.20, with same results we should file a bug report.

edit

As you can see there its not redundant.

The plus is neither a greedyness operator here, bc its in second place, its there to stop backtracking.

update
Apparently adding the second + turns the whole quantifier {n}+ into a possessive quantifier.

see here

Like a greedy quantifier, a possessive quantifier repeats the token as many times as possible. Unlike a greedy quantifier, it does not give up matches as the engine backtracks. With a possessive quantifier, the deal is all or nothing. You can make a quantifier possessive by placing an extra + after it. * is greedy, *? is lazy, and *+ is possessive. ++, ?+ and {n,m}+ are all possessive as well.

so + is "greedy" and ++ "possessive", {n}+ is analogous to ++ .

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

In reply to Re^7: about style: use possessive or atomic? (bug) by LanX
in thread about style: use possessive or atomic? by rsFalse

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