From: Josh Cheek <josh.cheek@...>
Date: 2011-07-23T04:28:21+09:00
Subject: Re: regex oddity

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On Fri, Jul 22, 2011 at 1:50 PM, Kendall Gifford <zettabyte@gmail.com>wrote:

> On Fri, Jul 22, 2011 at 12:41 PM, Roger Pack <rogerpack2005@gmail.com
> >wrote:
>
> > Anybody know why this occurs?
> >
> > >> 'a'.scan /.*/
> > => ["a", ""]
> >
> > Is this normal/expected?
> >
>
> Not saying this is normal, but my suspicion is:
>
> #scan first matches "a" (whole string), then tries to match on remainder
> ("") and matches (since '*' matches 0 character) giving you another match
> of
> "".
>
>
Seems correct:

"a".scan(/.*/) # => ["a", ""]
"a".scan(/.+/) # => ["a"]

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