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The important point is that, after the match, only those characters that the pattern actually matched will have been removed from the input stream.

In the more general case, what is removed from the input stream is the characters that actually matched and any characters prior to them.

But note that this still leaves the final problem I outlined. It is extremely memory-inefficient when matching short strings that occur very infrequently in very long streams.

Well, the description is vague enough that perhaps there are also already plans to support such cases more efficiently, though I'm skeptical of that.

Also, by the time I finished writing this up I had decided that patching this into Perl 5 might be quite easy. So I still have a couple of wishes left.

Thanks for the pointer.

- tye

In reply to Re^2: Applying regexes to streams: Perl enhancement idea (two wishes left) by tye
in thread Applying regexes to streams: Perl enhancement idea by tye

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