From: Kendall Gifford <zettabyte@...>
Date: 2011-07-23T03:50:51+09:00
Subject: Re: regex oddity

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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
"".

This behavior seems buggy IMHO. I'd think #scan would stop after the whole
string was consumed. However, I do like that

"".scan /.*/ => [""]

-- 
Kendall Gifford
zettabyte@gmail.com

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