Well, here "my thoughts"

How do I post a question effectively?

my problems:

• First of all this should be a meditation
• Then you are linking to another discussion instead to a definition.
• After digging out the article I'm confronted with a lot of rubyisms I don't understand.

Why don't you try to explain to us the advantages of this construct over negativ look (ahead|behinds) in (pseudo) Perl code?

That's the way to initiate a decent discussion here.

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