eval: Allow user override of 'missing'
commit81d288d80a7c66f5387394c4098097d10670c866
authorEric Blake <eblake@redhat.com>
Mon, 10 Feb 2020 19:41:11 +0000 (10 13:41 -0600)
committerEric Blake <eblake@redhat.com>
Mon, 10 Feb 2020 19:57:26 +0000 (10 13:57 -0600)
tree520c57348bb3fe6b0dc54af8138ae96a59be3ac1
parentecef5b16359fb5af7e7abf4fd2fb3ad5438b16be
eval: Allow user override of 'missing'

A comment in the code mentioned something that didn't actually work,
but which can be useful for user-directed logging of what other
callbacks they might want to implement.

Signed-off-by: Eric Blake <eblake@redhat.com>
plugins/eval/eval.c
plugins/eval/nbdkit-eval-plugin.pod
tests/test-eval.sh