Your bug report

#18076: Lines are not ignored by option -I if they are followed by a line with a difference

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 18076@debbugs.gnu.org.

-- 
18076: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18076
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