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Re: RegularExpression bug?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg101743] Re: RegularExpression bug?
  • From: Alexey <lehin.p at gmail.com>
  • Date: Thu, 16 Jul 2009 08:15:43 -0400 (EDT)
  • References: <h3kd67$fos$1@smc.vnet.net>

On Jul 15, 3:05 pm, Otto Murphy <obo... at gmail.com> wrote:
> StringCases["asdf", RegularExpression["^[^r]+?$"]] does not return any
> matches. However, this regular expression matches the entire string
> "asdf" in another regex environment.
>
> Is this a bug?

Yes, I think this is a bug. Interestingly, the following works fine:

In[1]:= StringCases["asdf", RegularExpression["^[^rr]+?$"]]

Out[1]= {"asdf"}

I have no idea why this happens.


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