[pcre-dev] Re^2: DOT with (PCRE_DOTALL|PCRE_NEWLINE_ANY) is …

Hello, Philip and Sheri

Thanks for your exposition, and I was able to solve my problem.
Incidentally, it is '/a$.+^b/ms' that I wanted to do it.

>On Mon, 12 May 2008, Sheri wrote:
>
>> Issaana@??? wrote:
>> > Hello,
>> >
>> > I tried the following code.
>> >
>> > re=pcre_compile("a.b",PCRE_DOTALL|PCRE_NEWLINE_ANY,&err,&erroff,NULL);
>> > rc=pcre_exec(re,NULL,"a\nb", 3,0,0,ov,3); //(A) rc=1
>> > rc=pcre_exec(re,NULL,"a\r\nb",4,0,0,ov,3); //(B) rc=PCRE_ERROR_NOMATCH
>> >
>> > (B) is a unexpected result. Which of a bug or my misunderstanding is it?
>> >
>> > Thanks,
>> > Issaana
>> >
>> >
>> I believe that's intentional. Where \r\n is a valid line-break sequence
>> it is treated as 2, not one character in the subject.
>
>That is correct; "." never matches more than one character. This is an
>extract from the pcrepattern man page:
>
> The behaviour of dot with regard to newlines can be changed. If the
> PCRE_DOTALL option is set, a dot matches any one character, without
> exception. If the two-character sequence CRLF is present in the subject
> string, it takes two dots to match it.
>

Thanks,
Issaana