With shmem's code, I get this output in a Windows command shell:

Null char detected in >filename1.txt <
Null char detected in >filename2 .txt<

[download]

and replicate shmem's output when going through emacs.

emc

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.

—Igor Sikorsky, reported in AOPA Pilot magazine February 2003.

In reply to Re^3: How to specify a Null char in a match operation by swampyankee
in thread How to specify a Null char in a match operation by Nik

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