Your bug report

#55652: please elaborate on diff -u -I RE

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 55652@debbugs.gnu.org.

-- 
55652: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=55652
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