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bug#30907: mv return value.

From: Paul Eggert
Subject: bug#30907: mv return value.
Date: Thu, 22 Mar 2018 11:48:32 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 03/22/2018 10:02 AM, Jorgen Harmse wrote:
The documentation specifies the usual exit convention, but doesn’t say what 
counts as success. For example, I would like
        mv -i a b || (diff a b && rm a)
to rename a if b does not exist and to remove a if they are identical, but it 
doesn’t work.

I'm afraid that's a bit vague. What wording change do you suggest?

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