Re: [PATCH 1/2] t8005: avoid grep on non-ASCII data

> John Keeping <john@keeping.me.uk> writes:
> 
> > My original sed version was:
> >
> > 	sed -ne "/^author /p" -e "/^summary /p"
> >
> > which I think will work on all platforms (we already use it in
> > t0000-basic.sh) but then I decided to be too clever :-(
> >
> > I still think sed is simpler than introducing a new function to wrap a
> > perl script.
> 
> Let's do this, before everybody forgets what we discussed.

> -- >8 --
> From: John Keeping <john@keeping.me.uk>
> Date: Sun, 21 Feb 2016 17:32:21 +0000
> Subject: [PATCH] t8005: avoid grep on non-ASCII data
> 
> GNU grep 2.23 detects the input used in this test as binary data so it
> does not work for extracting lines from a file.  We could add the "-a"
> option to force grep to treat the input as text, but not all
> implementations support that.  Instead, use sed to extract the desired
> lines since it will always treat its input as text.
> 
> While touching these lines, modernize the test style to avoid hiding the
> exit status of "git blame" and remove a space following a redirection
> operator.  Also swap the order of the expected and actual output
> files given to test_cmp; we compare expect and actual to show how
> actual output differs from what is expected.
> 
> Signed-off-by: John Keeping <john@keeping.me.uk>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
>  t/t8005-blame-i18n.sh | 28 ++++++++++++++++------------
>  1 file changed, 16 insertions(+), 12 deletions(-)
> 
> diff --git a/t/t8005-blame-i18n.sh b/t/t8005-blame-i18n.sh
> index 847d098..75da219 100755
> --- a/t/t8005-blame-i18n.sh
> +++ b/t/t8005-blame-i18n.sh
> @@ -33,11 +33,15 @@ author $SJIS_NAME
>  summary $SJIS_MSG
>  EOF
>  
> +filter_author_summary () {
> +	sed -n -e '/^author /p' -e '/^summary /p' "$@"
> +}
> +
>  test_expect_success !MINGW \
>  	'blame respects i18n.commitencoding' '
> -	git blame --incremental file | \
> -		egrep "^(author|summary) " > actual &&
> -	test_cmp actual expected
> +	git blame --incremental file >output &&
> +	filter_author_summary output >actual &&
> +	test_cmp expected actual
>  '
>  
>  cat >expected <<EOF
> @@ -52,9 +56,9 @@ EOF
>  test_expect_success !MINGW \
>  	'blame respects i18n.logoutputencoding' '
>  	git config i18n.logoutputencoding eucJP &&
> -	git blame --incremental file | \
> -		egrep "^(author|summary) " > actual &&
> -	test_cmp actual expected
> +	git blame --incremental file >output &&
> +	filter_author_summary output >actual &&
> +	test_cmp expected actual
>  '
>  
>  cat >expected <<EOF
> @@ -68,9 +72,9 @@ EOF
>  
>  test_expect_success !MINGW \
>  	'blame respects --encoding=UTF-8' '
> -	git blame --incremental --encoding=UTF-8 file | \
> -		egrep "^(author|summary) " > actual &&
> -	test_cmp actual expected
> +	git blame --incremental --encoding=UTF-8 file >output &&
> +	filter_author_summary output >actual &&
> +	test_cmp expected actual
>  '
>  
>  cat >expected <<EOF
> @@ -84,9 +88,9 @@ EOF
>  
>  test_expect_success !MINGW \
>  	'blame respects --encoding=none' '
> -	git blame --incremental --encoding=none file | \
> -		egrep "^(author|summary) " > actual &&
> -	test_cmp actual expected
> +	git blame --incremental --encoding=none file >output &&
> +	filter_author_summary output >actual &&
> +	test_cmp expected actual
>  '
>  
>  test_done
> -- 
> 2.7.2-532-g79873b4