From 86b452e2769e80b220327b1301c7487ad4afa4f4 Mon Sep 17 00:00:00 2001
From: Stefan Beller <sbeller@google.com>
Date: Fri, 30 Jun 2017 13:53:09 -0700
Subject: diff.c: add dimming to moved line detection

Any lines inside a moved block of code are not interesting. Boundaries
of blocks are only interesting if they are next to another block of moved
code.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t4015-diff-whitespace.sh | 124 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)

(limited to 't')

diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index d1d7b99990..c3b697411a 100755
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -1179,6 +1179,130 @@ test_expect_success 'plain moved code, inside file' '
 	test_cmp expected actual
 '
 
+test_expect_success 'detect permutations inside moved code -- dimmed_zebra' '
+	git reset --hard &&
+	cat <<-\EOF >lines.txt &&
+		line 1
+		line 2
+		line 3
+		line 4
+		line 5
+		line 6
+		line 7
+		line 8
+		line 9
+		line 10
+		line 11
+		line 12
+		line 13
+		line 14
+		line 15
+		line 16
+	EOF
+	git add lines.txt &&
+	git commit -m "add poetry" &&
+	cat <<-\EOF >lines.txt &&
+		line 4
+		line 5
+		line 6
+		line 7
+		line 8
+		line 9
+		line 1
+		line 2
+		line 3
+		line 14
+		line 15
+		line 16
+		line 10
+		line 11
+		line 12
+		line 13
+	EOF
+	test_config color.diff.oldMoved "magenta" &&
+	test_config color.diff.newMoved "cyan" &&
+	test_config color.diff.oldMovedAlternative "blue" &&
+	test_config color.diff.newMovedAlternative "yellow" &&
+	test_config color.diff.oldMovedDimmed "normal magenta" &&
+	test_config color.diff.newMovedDimmed "normal cyan" &&
+	test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
+	test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
+	git diff HEAD --no-renames --color-moved=dimmed_zebra| test_decode_color >actual &&
+	cat <<-\EOF >expected &&
+	<BOLD>diff --git a/lines.txt b/lines.txt<RESET>
+	<BOLD>index 47ea9c3..ba96a38 100644<RESET>
+	<BOLD>--- a/lines.txt<RESET>
+	<BOLD>+++ b/lines.txt<RESET>
+	<CYAN>@@ -1,16 +1,16 @@<RESET>
+	<BMAGENTA>-line 1<RESET>
+	<BMAGENTA>-line 2<RESET>
+	<BMAGENTA>-line 3<RESET>
+	 line 4<RESET>
+	 line 5<RESET>
+	 line 6<RESET>
+	 line 7<RESET>
+	 line 8<RESET>
+	 line 9<RESET>
+	<BCYAN>+<RESET><BCYAN>line 1<RESET>
+	<BCYAN>+<RESET><BCYAN>line 2<RESET>
+	<CYAN>+<RESET><CYAN>line 3<RESET>
+	<YELLOW>+<RESET><YELLOW>line 14<RESET>
+	<BYELLOW>+<RESET><BYELLOW>line 15<RESET>
+	<BYELLOW>+<RESET><BYELLOW>line 16<RESET>
+	 line 10<RESET>
+	 line 11<RESET>
+	 line 12<RESET>
+	 line 13<RESET>
+	<BMAGENTA>-line 14<RESET>
+	<BMAGENTA>-line 15<RESET>
+	<BMAGENTA>-line 16<RESET>
+	EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'cmd option assumes configured colored-moved' '
+	test_config color.diff.oldMoved "magenta" &&
+	test_config color.diff.newMoved "cyan" &&
+	test_config color.diff.oldMovedAlternative "blue" &&
+	test_config color.diff.newMovedAlternative "yellow" &&
+	test_config color.diff.oldMovedDimmed "normal magenta" &&
+	test_config color.diff.newMovedDimmed "normal cyan" &&
+	test_config color.diff.oldMovedAlternativeDimmed "normal blue" &&
+	test_config color.diff.newMovedAlternativeDimmed "normal yellow" &&
+	test_config diff.colorMoved zebra &&
+	git diff HEAD --no-renames --color-moved| test_decode_color >actual &&
+	cat <<-\EOF >expected &&
+	<BOLD>diff --git a/lines.txt b/lines.txt<RESET>
+	<BOLD>index 47ea9c3..ba96a38 100644<RESET>
+	<BOLD>--- a/lines.txt<RESET>
+	<BOLD>+++ b/lines.txt<RESET>
+	<CYAN>@@ -1,16 +1,16 @@<RESET>
+	<MAGENTA>-line 1<RESET>
+	<MAGENTA>-line 2<RESET>
+	<MAGENTA>-line 3<RESET>
+	 line 4<RESET>
+	 line 5<RESET>
+	 line 6<RESET>
+	 line 7<RESET>
+	 line 8<RESET>
+	 line 9<RESET>
+	<CYAN>+<RESET><CYAN>line 1<RESET>
+	<CYAN>+<RESET><CYAN>line 2<RESET>
+	<CYAN>+<RESET><CYAN>line 3<RESET>
+	<YELLOW>+<RESET><YELLOW>line 14<RESET>
+	<YELLOW>+<RESET><YELLOW>line 15<RESET>
+	<YELLOW>+<RESET><YELLOW>line 16<RESET>
+	 line 10<RESET>
+	 line 11<RESET>
+	 line 12<RESET>
+	 line 13<RESET>
+	<MAGENTA>-line 14<RESET>
+	<MAGENTA>-line 15<RESET>
+	<MAGENTA>-line 16<RESET>
+	EOF
+	test_cmp expected actual
+'
+
 test_expect_success 'no effect from --color-moved with --word-diff' '
 	cat <<-\EOF >text.txt &&
 	Lorem Ipsum is simply dummy text of the printing and typesetting industry.
-- 
cgit v1.2.3