Your bug report

#34089: 27.0.50; Substring icomplete broken for M-x switch-to-buffer

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 34089@debbugs.gnu.org.

-- 
34089: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34089
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems