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From: | Davis Herring |
Subject: | Re: Don't complain about changed file when it hasn't changed |
Date: | Mon, 29 Aug 2016 13:10:29 -0600 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2 |
A very basic "checksum" would be to just use the file's size. We could easily implement that and catch most modifications without any real I/O.Does this work? Many changes don't affect file size, we we would still want to prompt the user, right?
I merely meantIf the file size doesn't match, immediately rule the file "changed on disk" without paying for `insert-file-contents'.
as an optimization to prevent most of the I/O cost. Davis --This product is sold by volume, not by mass. If it appears too dense or too sparse, it is because mass-energy conversion has occurred during shipping.
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