bug#32342: [PATCH] Allow to override time_stamp with SOURCE_DATE_EPOCH

[Paul Eggert]

On 08/02/2018 09:12 AM, Jim Meyering wrote:
> I had the same initial negative reaction to adding support for an
> envvar, but given the minor effect and worthy goal, I think the
> balance has tipped in favor of allowing this one.

Yes, on further thought I'm inclined to go whole hog and just fix the 
durn thing without any fancy environment variables. In hindsight, that 
timestamp never should have been put in there when stdin is a pipe. I 
installed the attached patch, which should fix the problem. What do you 
think? Although this is not strictly backward-compatible and arguably 
violates the GNU coding guidelines, I can't imagine anybody really wants 
that timestamp in there (except perhaps for spy agencies trying to track 
what people are doing :-).

0001-gzip-make-the-output-more-reproducible.patch
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