Re: Git has two ways to count modified lines

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On Mon, Apr 04 2022, René Scharfe wrote:

> diff --git a/sequencer.c b/sequencer.c
> index a1bb39383d..85a17d45bd 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -1327,7 +1327,6 @@ void print_commit_summary(struct repository *r,
>  	get_commit_format(format.buf, &rev);
>  	rev.always_show_header = 0;
>  	rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
> -	rev.diffopt.break_opt = 0;
>  	diff_setup_done(&rev.diffopt);
>
>  	refs = get_main_ref_store(the_repository);
> diff --git a/t/t7524-commit-summary.sh b/t/t7524-commit-summary.sh
> new file mode 100755
> index 0000000000..47b2f1dc22
> --- /dev/null
> +++ b/t/t7524-commit-summary.sh
> @@ -0,0 +1,31 @@
> +#!/bin/sh
> +
> +test_description='git commit summary'
> +. ./test-lib.sh
> +
> +test_expect_success 'setup' '
> +	test_seq 101 200 >file &&
> +	git add file &&
> +	git commit -m initial &&
> +	git tag initial
> +'
> +
> +test_expect_success 'commit summary ignores rewrites' '
> +	git reset --hard initial &&

A leftover debugging aid? You can also use test_commit earlier:
	
	diff --git a/t/t7524-commit-summary.sh b/t/t7524-commit-summary.sh
	index 47b2f1dc22a..60027e86ccd 100755
	--- a/t/t7524-commit-summary.sh
	+++ b/t/t7524-commit-summary.sh
	@@ -4,14 +4,10 @@ test_description='git commit summary'
	 . ./test-lib.sh
	 
	 test_expect_success 'setup' '
	-	test_seq 101 200 >file &&
	-	git add file &&
	-	git commit -m initial &&
	-	git tag initial
	+	test_commit initial file "$(test_seq 101 200)"
	 '
	 
	 test_expect_success 'commit summary ignores rewrites' '
	-	git reset --hard initial &&
	 	test_seq 200 300 >file &&
	 
	 	git diff --stat >diffstat &&


> +	test_seq 200 300 >file &&
> +
> +	git diff --stat >diffstat &&
> +	git diff --stat --break-rewrites >diffstatrewrite &&
> +
> +	# make sure this scenario is a detectable rewrite
> +	! test_cmp_bin diffstat diffstatrewrite &&

Is this really binary? I removed the ! and tried test_cmp, and it's just
a diffstat.

Elsewhere in the test suite we test_cmp this output, would be
clearer/easier to read to do the same here if possible.

> +
> +	git add file &&
> +	git commit -m second >actual &&
> +
> +	grep "1 file" <actual >actual.total &&
> +	grep "1 file" <diffstat >diffstat.total &&
> +	test_cmp diffstat.total actual.total
> +'
> +
> +test_done





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