From: "Wesley J. Landaker" <wjl@...>
Date: 2003-06-13T06:50:13+09:00
Subject: Re: Regex: undocumented feature?

Apparently, Joel VanderWerf recently wrote:
>
> p /\AQ/ =~ "aQ"    # ==> nil
> p /\A=|Q/ =~ "aQ"  # ==> 1

\A means beginning of the string (mostly the same as ^, except in
multiline mode), and it is lower precidence than |

Notice:

p /^Q/ =~ "aQ"       # ==> nil
p /^=|Q/ =~ "aQ"     # ==> 1

But:

p /^(=|Q)/ =~ "aQ"   # ==> nil
p /\A(=|Q)/ =~ "aQ"  # ==> nil

At least with ruby 1.6.8 ;)

Wes