From: Phrogz <phrogz@...>
Date: 2007-09-25T04:30:05+09:00
Subject: Favorite idiom for "keep doing this until it returns nil/false"

I want to keep running gsub! on a string until it returns nil. How do
you prefer to do this?

true while str.gsub!( ... )

while str.gsub!( ... ); end

begin
  done = !str.gsub!( ... )
end until done

begin
  made_replacement = str.gsub!( ... )
end while made_replacement

...some other way?