From: "S.Z." <zbl@...>
Date: 2005-11-26T22:07:28+09:00
Subject: What branch of (|) RE is match?

I have a fragment like this:

variant= [ /[abc]/, /[123]/, /[xyz]/ ];
re= /aaa\s(#{variant.join('|')})\sbbb/;
mch= re.match($stdin.read);

(Remove the semicolons if you hate them.)

Now, I need to know what branch of variant is match, /[abc]/ or /[123]/
or /[xyz]/
How can I reveal it?

variant can be iterated with mch[1] :

vm= variant.find { |v| v.match(mch[1]); }

But it is superfluous work, isn't it?