Re: uniq: exit status not documented enough

[Dan Jacobson]

P>      * man/uniq.x: Change summary so that it doesn't imply that
P>      uniq writes to its input file.  Problem reported by
P>      Dan Jacobson.

Ah, indeed, it implied that too! Good snooping.
However, as I was talking about exit codes,
>> uniq - report or omit duplicate lines
therefore if it fails to report or omit repeated lines
>> then it will return nonzero
according to the exit code discussion there.
I.e., "failure" is not defined.

P.S., pass sounds better than report. And filter sounds better than
"pass or omit", perhaps.