Re: [PATCH 1/2] t3701: clean up hunk splitting tests

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> Clean up some test constructs in preparation for extending the tests
> in the next commit. There are three small changes, I've grouped them
> together as they're so small it didn't seem worth creating three
> separate commits.
>  1 - "cat file | sed expression" is better written as
>      "sed expression file".
>  2 - Follow our usual practice of redirecting the output of git
>      commands to a file rather than piping it into another command.
>  3 - Use test_write_lines rather than 'printf "%s\n"'.

> @@ -373,9 +373,9 @@ test_expect_success 'setup expected' '
>  test_expect_success 'add first line works' '
>  	git commit -am "clear local changes" &&
>  	git apply patch &&
> -	printf "%s\n" s y y | git add -p file 2>error |
> -		sed -n -e "s/^([1-2]\/[1-2]) Stage this hunk[^@]*\(@@ .*\)/\1/" \
> -		       -e "/^[-+@ \\\\]"/p  >output &&
> +	test_write_lines s y y | git add -p file 2>error >raw-output &&
> +	sed -n -e "s/^([1-2]\/[1-2]) Stage this hunk[^@]*\(@@ .*\)/\1/" \
> +	       -e "/^[-+@ \\\\]"/p raw-output >output &&