Feature request: non-dropping regmatches/strextract

After some discussion within R core, we decided that a "nomatch"
argument on regmatches() may be a good initial step. We might add a
new function later that combines the regexpr() and regmatches() steps.
The gregexpr() and regexec() inputs are both lists so it's not clear
whether a "nomatch" value would be relevant (the elements are empty)
in those cases.

On Mon, Sep 2, 2019 at 11:38 AM Cyclic Group Z_1

I think that's a good reason for not including this in regmatches; you're right, its name is somewhat suggestive of yielding matches. Also, that sounds like a great design for strcapture with an atomic prototype.

Best,
CG

Michael Lawrence
Scientist, Bioinformatics and Computational Biology
Genentech, A Member of the Roche Group
Office +1 (650) 225-7760
michafla at gene.com

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