From: "Todd A. Jacobs" <tjacobs-sndr-019fdb@...>
Date: 2007-09-22T08:04:08+09:00
Subject: Break loop by trapping INT

I'm trying to break a loop whenever CTRL-C is pressed, and find that
this doesn't work:

    trap 'INT', proc {break}; count=0; while count < 10; 
    puts count += 1; sleep 1; end

I'm guessing it's because the loop is somehow out of scope, but I'm not
sure why.

Some minor syntax changes to trap makes it work, sort of. If I use:

    trap('INT') {break}

instead, then I get a LocalJumpError. So, why does the syntax only work
one way, and what is the right way to trap the interrupt?

-- 
"Oh, look: rocks!"
	-- Doctor Who, "Destiny of the Daleks"