[sr #104327] Flag for unmatched output to stderr?

[Julian Foad]

Update of sr #104327 (project grep):

                  Status:                    None => Wont Do                
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

Thanks for the idea, and I can see why you would want it in some cases, but it
just doesn't fit the general philosophy of command-line tools like Grep.  The
standard error stream is for error messages or at least notifications, not for
general output.  Sending unmatched lines to another destination such as a
named file would get around that problem, but there are others.

You should use a different tool such as Awk, or run two Grep commands, one
with "-v" (invert the sense of matching).

Also, be aware that Grep is not in a good position to accept new features this
year.

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