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Re: simple regex pattern sought

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On 26.05.2012 17:06, markspace wrote:
> On 5/26/2012 7:37 AM, Robert Klemme wrote:
>> On 26.05.2012 03:43, markspace wrote:
>>> On 5/25/2012 3:12 PM, Robert Klemme wrote:
>>>
>>>> "\"(?:\\\\.|[^\\\"])*\"|'(?:\\\\.|[^\\'])*'"
>>>
> ...
>>> and I don't think you need to in a regex
>>> either (although I didn't check that).
>>
>> There is also no regexp escaping of single quotes either. The only
>> regexp escaping you can see are the \\\\ which translate into \\ in the
>> string which is a literal backslash for the regexp engine.
>
>
> Yes, there is, although I think it's a typo. Both \\\" and \\' get
> passed to the regex as \" and \', which means just a single character "
> and ' respectively.

Right you are - both times: there is regexp escapind and it was in fact 
a typo (missing \\)!

> You're right about the rest of it though. With so many \'s floating
> around, I have a hard time reading Java regex!

That's true for other languages as well - the basic reason is that the 
same character is used for

  - escaping in strings
  - escaping in backslashes
  - escaping in the source text (in this case we could pick another 
character)

>> It's not parenthesis around character classes but around the alternative
>> of "match a backslash followed by any char" and "any char which is not
>> backslash or the opening quote type of this string variant".
>
>
> Yup, I totally missed this too. Thanks for pointing it out.

You're welcome!  Thank you again for finding the missing escape.

Cheers

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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Thread

simple regex pattern sought Roedy Green <see_website@mindprod.com.invalid> - 2012-05-25 14:45 -0700
  Re: simple regex pattern sought markspace <-@.> - 2012-05-25 14:55 -0700
  Re: simple regex pattern sought Lew <lewbloch@gmail.com> - 2012-05-25 14:55 -0700
    Re: simple regex pattern sought markspace <-@.> - 2012-05-25 15:04 -0700
      Re: simple regex pattern sought Lew <noone@lewscanon.com> - 2012-05-26 14:07 -0700
        Re: simple regex pattern sought markspace <-@.> - 2012-05-26 18:34 -0700
          Re: simple regex pattern sought Lew <noone@lewscanon.com> - 2012-05-27 11:39 -0700
    Re: simple regex pattern sought Lew <lewbloch@gmail.com> - 2012-05-25 15:03 -0700
    Re: simple regex pattern sought Robert Klemme <shortcutter@googlemail.com> - 2012-05-26 00:12 +0200
      Re: simple regex pattern sought markspace <-@.> - 2012-05-25 18:43 -0700
        Re: simple regex pattern sought Robert Klemme <shortcutter@googlemail.com> - 2012-05-26 16:37 +0200
          Re: simple regex pattern sought markspace <-@.> - 2012-05-26 08:06 -0700
            Re: simple regex pattern sought Robert Klemme <shortcutter@googlemail.com> - 2012-05-26 17:34 +0200
              Re: simple regex pattern sought Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-05-26 10:07 -0700
      Re: simple regex pattern sought Roedy Green <see_website@mindprod.com.invalid> - 2012-05-26 06:19 -0700
        Re: simple regex pattern sought markspace <-@.> - 2012-05-26 07:19 -0700
        Re: simple regex pattern sought markspace <-@.> - 2012-05-26 07:57 -0700
          Re: simple regex pattern sought Robert Klemme <shortcutter@googlemail.com> - 2012-05-26 17:13 +0200
            Re: simple regex pattern sought markspace <-@.> - 2012-05-26 10:08 -0700
              Re: simple regex pattern sought Roedy Green <see_website@mindprod.com.invalid> - 2012-05-26 14:14 -0700

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