The little red shift indicator tab in the SRAM X.9 rear shifter on Mary’s bike snapped:

In a triumph of hope over experience, I tried gluing the pieces with a bit of fixturing and a dab of IPS #3 solvent:

Didn’t work any better than the last time, of course. Every gear shift snap must apply 1000 G to that poor little tab…
What’s new & different: one can now obtain Official Repair Kits consisting of the indicator tab, the plastic cover, and the two screws for $6.47 delivered from eBay.
Done!