Merge branch 'vn/diff-ihc-config'

"git diff" learned diff.interHunkContext configuration variable
that gives the default value for its --inter-hunk-context option.

* vn/diff-ihc-config:
  diff: add interhunk context config option

1 files changed, 26 insertions, 1 deletions

diff --git a/t/t4032-diff-inter-hunk-context.sh b/t/t4032-diff-inter-hunk-context.sh
index e4e3e28fc7..bada0cbd32 100755
--- a/t/t4032-diff-inter-hunk-context.sh
+++ b/t/t4032-diff-inter-hunk-context.sh
@@ -16,11 +16,15 @@ f() {
 }
 
 t() {
+	use_config=
+	git config --unset diff.interHunkContext
+
 	case $# in
 	4) hunks=$4; cmd="diff -U$3";;
 	5) hunks=$5; cmd="diff -U$3 --inter-hunk-context=$4";;
+	6) hunks=$5; cmd="diff -U$3"; git config diff.interHunkContext $4; use_config="(diff.interHunkContext=$4) ";;
 	esac
-	label="$cmd, $1 common $2"
+	label="$use_config$cmd, $1 common $2"
 	file=f$1
 	expected=expected.$file.$3.$hunks
 
@@ -89,4 +93,25 @@ t 9 lines	3		2
 t 9 lines	3	2	2
 t 9 lines	3	3	1
 
+#					use diff.interHunkContext?
+t 1 line	0	0	2	config
+t 1 line	0	1	1	config
+t 1 line	0	2	1	config
+t 9 lines	3	3	1	config
+t 2 lines	0	0	2	config
+t 2 lines	0	1	2	config
+t 2 lines	0	2	1	config
+t 3 lines	1	0	2	config
+t 3 lines	1	1	1	config
+t 3 lines	1	2	1	config
+t 9 lines	3	2	2	config
+t 9 lines	3	3	1	config
+
+test_expect_success 'diff.interHunkContext invalid' '
+	git config diff.interHunkContext asdf &&
+	test_must_fail git diff &&
+	git config diff.interHunkContext -1 &&
+	test_must_fail git diff
+'
+
 test_done