Your bug report

#21249: "sed -i '...' -" in git head

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 21249@debbugs.gnu.org.

-- 
21249: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21249
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems