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From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: "Francesco Potortì" <pot@gnu.org>
Cc: 17509@debbugs.gnu.org
Subject: bug#17509: 23.4; bug with regexp in java-mode
Date: Fri, 16 May 2014 17:48:18 -0400	[thread overview]
Message-ID: <jwvoayxmm6p.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <E1WlKtk-0002WX-Pz@tucano.isti.cnr.it> ("Francesco Potortì"'s message of "Fri, 16 May 2014 18:22:16 +0200")

>>> (setq defun-prompt-regexp "\\(class\\|/\\*\\*\\)[^{]*")
>> Why is this an Emacs bug, and not user error?
> Because I suppose that Emacs should never hang...

FWIW, the exponential blowup that can happen in regexp matching is
indeed a misfeature of Emacs's current regexp matcher.
But it's been that way "for ever" and there's no promising sign of an
upcoming fix for it.


        Stefan





      reply	other threads:[~2014-05-16 21:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-16 14:16 bug#17509: 23.4; bug with regexp in java-mode Francesco Potortì
2014-05-16 16:07 ` Glenn Morris
2014-05-16 16:22   ` Francesco Potortì
2014-05-16 21:48     ` Stefan Monnier [this message]

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