[plt-scheme] Possible bug in regexp?

Thanks! All this regexp stuff is giving me flashbacks to my first job
when I had to write code in Perl. :-/

On Tue, Apr 27, 2010 at 10:48 AM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
> I just pushed a fix + new tests.
>
> Jay
>
> On Tue, Apr 27, 2010 at 7:09 AM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
>> So the real error is that the pattern says to disallow all characters
>> between 0 and #?
>>
>> I will fix that when I get in.
>>
>> Jay
>>
>> On Tue, Apr 27, 2010 at 7:07 AM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
>>> At Tue, 27 Apr 2010 08:52:53 -0400, "Todd O'Bryan" wrote:
>>>>
>>>> (regexp-match?
>>>>        #rx"^\"([^\"#\u0000]| |#\return#\newline|#\tab|\\\\\")*\"$"
>>>>        "\")!\"")
>>>>
>>>> succeeds, but
>>>
>>> I think that was meant to be
>>>
>>>  (regexp-match?
>>>        #rx"^\"([^\"\u0000]| |\r\n|\t|\\\\\")*\"$"
>>>        "\")!\"")
>>>
>>> That is, the syntax for character escapes in a string is different from
>>> the syntax of character literals.
>>>
>>>> (regexp-match?
>>>>        #rx"^\"([^\"#\u0000-#\u0000]| |#\return#\newline|#\tab|\\\\\")*\"$"
>>>>        "\")!\"")
>>>
>>> The expression
>>>
>>>  (regexp-match?
>>>        #rx"^\"([^\"\u0000-\u0000]| |\r\n|\t|\\\\\")*\"$"
>>>        "\")!\"")
>>>
>>> produces #t.
>>>
>>>> (regexp-match?
>>>>        #rx"^\"([^\"#\u0000-#\u0001]| |#\return#\newline|#\tab|\\\\\")*\"$"
>>>>        "\")!\"")
>>>
>>> The expression
>>>
>>>  (regexp-match?
>>>        #rx"^\"([^\"\u0000-\u0001]| |\r\n|\t|\\\\\")*\"$"
>>>        "\")!\"")
>>>
>>> also produces #t.
>>>
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>>
>>
>>
>> --
>> Jay McCarthy <jay at cs.byu.edu>
>> Assistant Professor / Brigham Young University
>> http://teammccarthy.org/jay
>>
>> "The glory of God is Intelligence" - D&C 93
>>
>
>
>
> --
> Jay McCarthy <jay at cs.byu.edu>
> Assistant Professor / Brigham Young University
> http://teammccarthy.org/jay
>
> "The glory of God is Intelligence" - D&C 93
>