util.opener: if requested, use atomicfile even if the file doesn't exist Right now, surprisingly enough, if you request an atomic file but the file still doesn't exist, you get a regular file. AFAICS, the only time this happens is during the initial creation of the dirstate.

#!/bin/sh

hg init

echo "Is there an error message when trying to diff non-existing files?"
hg diff not found

echo "Is there an error message when trying to add non-existing files?"
hg add not found