[cl-ppcre-devel] Multi-line-mode confusion...

[Gary King]

Ack. Don't I feel silly. Thanks Chris.


On Apr 30, 2006, at 10:42 PM, Chris Dean wrote:

>
>>> (cl-ppcre:scan
>>>  (cl-ppcre:create-scanner "(.*?)c.*?" :multi-line-mode t)
>
> Perhaps you mean :single-line-mode ?
>
> The Perl terminology can be confusing (I always have to look it up!)
> cl-ppcre says:
>
>    The symbols :CASE-INSENSITIVE-P, :CASE-SENSITIVE-P,
>    :MULTI-LINE-MODE-P, :NOT-MULTI-LINE-MODE-P, :SINGLE-LINE-MODE-P,  
> and
>    :NOT-SINGLE-LINE-MODE-P are equivalent to Perl's embedded modifiers
>    "(?i)", "(?-i)", "(?m)", "(?-m)", "(?s)", and "(?-s)".
>
> perlre says:
>
>        m   Treat string as multiple lines.  That is, change "^" and  
> "$" from
>            matching the start or end of the string to matching the  
> start or
>            end of any line anywhere within the string.
>
>        s   Treat string as single line.  That is, change "." to  
> match any
>            character whatsoever, even a newline, which normally it  
> would not
>            match.
>
> Regards,
> Chris Dean
>
> Gary King <gwking at metabang.com> writes:
>> If I can pull people attention away from the International Lisp
>> conference (!)...
>>
>> Perhaps I'm missing something but both
>>
>>> (cl-ppcre:scan
>>>  (cl-ppcre:create-scanner "(.*?)c.*?")
>>>  "a
>>> b
>>> c
>>> d
>>> e")
>>
>> and
>>
>>> (cl-ppcre:scan
>>>  (cl-ppcre:create-scanner "(.*?)c.*?" :multi-line-mode t)
>>>  "a
>>> b
>>> c
>>> d
>>> e")
>>
>> return the same values: 4 5 #(4) #(4).
>>
>> I expected the second form to return 0 4 #(0) #(4). Where have I gone
>> wrong...
>>
>> thanks.
>> -- 
>> Gary Warren King
>> metabang.com
>> http://www.metabang.com/
>> (413) 210 7511
>> gwking on #lisp (occasionally)
>>
>>
>> _______________________________________________
>> cl-ppcre-devel site list
>> cl-ppcre-devel at common-lisp.net
>> http://common-lisp.net/mailman/listinfo/cl-ppcre-devel


-- 
Gary Warren King
metabang.com
http://www.metabang.com/
(413) 210 7511
gwking on #lisp (occasionally)