Your bug report

#42522: Emacs 27: 100% CPU when setting mode-name with ligatures

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 42522@debbugs.gnu.org.

-- 
42522: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42522
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems