From: ts <decoux@...>
Date: 2000-09-02T23:46:59+09:00
Subject: [ruby-talk:4752] Re: Possible regex bug?

>>>>> "D" == Dave Thomas <Dave@thomases.com> writes:

D> However... The point of my original post was not to say that there are 
D> no differences between Perl and Ruby regexps, but to say that the
D> behavior of String.split was consistent with Perl's when given a
D> pattern that matched a zero length string. That seemed to be Conrad's
D> concern.

 Yes but perl and ruby don't have the same notion of zero-length match

pigeon% cat b.rb
#!/usr/bin/ruby
a = 'foo'.split /\w??/
p a
pigeon% 

pigeon% b.rb
["f", "o", "o"]
pigeon%
 
pigeon% cat a.pl
#!/usr/bin/perl -l
@m = split (/\w??/,  'foo');
print "<@m>";
pigeon%
 
pigeon% a.pl
<>
pigeon% 

 now remove a `?' and compare the results.

Guy Decoux