Ah - those times show another reason why one might be motivated to keep requesting more options be added to grep.
>From those timings, and from looking at the source, it's clear that the FSF rewrote grep from scratch, sometime back in the late 1980's or early 1990's, to have fast reads, whereas sed is still using stdio fread in a classical manner, which is a painfully slower double copy solution. If sed were still a widely used command in performance sensitive applications, it should have some serious TLC applied to its performance. However, since the pool of Jurassic Park Dinosaurs who can (and perhaps do) compose sed commands in their sleep is a nearly extinct breed, I see no sufficient interest in accepting such a rewrite of sed, even if it showed up as a proposed checkin. That grep can even seriously beat perl for such raw read performance is impressive. Perl used to be the King of such challenges. -- Paul Jackson p...@usa.net