Merge pull request
#12144 from meeseeksmachine/auto-backport-of-pr-12130-on-7.x...
Merge pull request
#12144 from meeseeksmachine/auto-backport-of-pr-12130-on-7.x
Backport PR
#12130 on branch 7.x (Ensure set_custom_completer is working. Fixes
#11272)