From: Mischa POSLAWSKY <perl@shiar.org>
Date: Mon, 9 Sep 2019 16:57:40 +0000 (+0200)
Subject: replace perl in example date parsing
X-Git-Tag: v1.05~12
X-Git-Url: http://git.shiar.nl/barcat.git/commitdiff_plain/1581d8acae9b0ed74bd4c5a696f6cdc470fe84d9?hp=1581d8acae9b0ed74bd4c5a696f6cdc470fe84d9

replace perl in example date parsing

Time::Piece was released with perl v5.8.9 but may not be installed on
restricted systems.  Hardcoding the number of days is less flexible but
"only" relies on a GNU date supporting -d.

Furthermore, git only supports date formatting since version 2.6.0,
so prefer an equivalent cut similar to earlier year selection.
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