Your bug report

#22991: 25.0.92: C-u C-s does not display "Regexp I-search:" in the echo area

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 22991@debbugs.gnu.org.

-- 
22991: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22991
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems