That faq version is probably the worst.

Agreed, in general, though there are a range of variations on the "good" theme too.

The FAQ version is short and doesn't rely on look-ahead. Consequently it is the easiest to copy if you don't care how it works -- and easiest (IMHO) to understand if you do. Short and sweet has significant advantages if you are new to Perl, and that's why it's a good answer to a FAQ.

I did notice that the cookbook version you quote also appears (more or less) in the FAQ now.

In reply to Re: Re: Re: Re: Numbers with commas by TilRMan
in thread Numbers with commas by Anonymous Monk

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