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

[Chris Dean]

>> (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)
>
>
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