I just ran into while ()

Couple of questions:

Besides saving a character is it preferable to while (1)?

When did it get added to the language?

Update: Here are some instances of it from Google Code Search:

http://www.google.com/codesearch?hl=en&lr=&q=lang:perl+while\+\(\)&sbtn=Search

In reply to while () vs. while (1) by perl5ever

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