Your bug report

#28417: ptx does not terminate when matching a zero length sentence regex

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 28417@debbugs.gnu.org.

-- 
28417: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28417
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