[J3] Why is += missing?

[David Muxworthy]

> As you may have noted, Ondrej has brought up the GitHub based "community" forum to brainstorm ideas toward Fortran 202Y (and later 20**) proposals and this topic was discussed there not so long ago.  Separately Steve/WG5 appears to have at least verbally lent support toward the premise of that forum being one among several recognized avenues toward a testbed and sieve of aspects to get into future standard revisions.

Indeed.  WG5 and J3 somehow managed to discuss and develop ideas electronically for 30 years before GitHub came along.

David