Your bug report

#40576: call-process-region does not accept nil as first argument

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 40576@debbugs.gnu.org.

-- 
40576: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=40576
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