Because it's a useful default behaviour that doesn't cost a lot and doesn't add much noise when it's not required, but can save a huge amount of pain when it is required. Think of it as a good habit like using strictures, three parameter open and all those other good habits that just naturally flow off the ends of your fingers or are part of your standard boilerplate.

True laziness is hard work

In reply to Re^3: run away ? by GrandFather
in thread run away ? by toniax

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