From: Johannes Sixt <j6t@kdbg.org>
Date: Sun, 06 Nov 2016 21:40:02 GMT
Subject: Re: [PATCH] t0021: expect more variations in the output of uniq -c
Message-ID: <c842e0a7-b032-e0c4-0995-f11d93c17c0a@kdbg.org>
In-Reply-To: <0B7DE8F1-34DF-4271-8936-B9B596EF5F9E@gmail.com>

Am 06.11.2016 um 16:31 schrieb Lars Schneider:
> This looks good to me. I wonder if I should post a patch
> to add the "|| return" trick to the following function
> "test_cmp_exclude_clean", too?!

The function does this:

         for FILE in "$expect" "$actual"
         do
                 grep -v "IN: clean" "$FILE" >"$FILE.tmp" &&
                 mv "$FILE.tmp" "$FILE"
         done &&

It is an interesting case: If only matching lines are in the file, 
nothing would be printed, and grep returns failure. But we shouldn't 
care, because, strictly speaking, the function only wants to remove 
lines with a certain pattern. Here, it actually hurts to &&-chain grep!

It wouldn't hurt to write 'mv ... || return', but at the same time, && 
after grep should be removed.

-- Hannes