From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 18 Mar 2019 06:35:56 GMT
Subject: Re: [PATCH v8 00/11] Fix scissors bug during conflict
Message-ID: <xmqqa7hs3d0z.fsf@gitster-ct.c.googlers.com>
In-Reply-To: <20190317130539.GA23160@szeder.dev>

SZEDER Gábor <szeder.dev@gmail.com> writes:

>> +	git commit ${3+"$3"} -m "$2" >act &&
>> +	head -1 <act >tmp &&
>> +	mv tmp act &&
>
> Here you could swap the order of when you write to 'act' and 'tmp',
> and thus make the 'mv' unnecessary, like this:
>
>   git commit [...] >tmp &&
>   head -1 act >tmp &&
>   [...rest of the test...]
>
> Note also that 'head' (or 'sed' in later tests) can open its input
> file on its own, there's no need to redirect its standard input.

Yup, that is better with a slight fix

	git testing-output-from-this-command ... >tmp &&
	head -n 1 tmp >actual &&

to actually read from the output kept in the temporary file.

Especially I think bare -<num> is a BSDism that has been
removed from POSIX some time ago.