git diff --ignore-space-at-eol > out
test_expect_success 'another test, with --ignore-space-at-eol' 'test_cmp expect out'
+test_expect_success 'ignore-blank-lines: only new lines' '
+ test_seq 5 >x &&
+ git update-index x &&
+ test_seq 5 | sed "/3/i \\
+" >x &&
+ git diff --ignore-blank-lines >out &&
+ >expect &&
+ test_cmp out expect
+'
+
+test_expect_success 'ignore-blank-lines: only new lines with space' '
+ test_seq 5 >x &&
+ git update-index x &&
+ test_seq 5 | sed "/3/i \ " >x &&
+ git diff -w --ignore-blank-lines >out &&
+ >expect &&
+ test_cmp out expect
+'
+
+test_expect_success 'ignore-blank-lines: after change' '
+ cat <<-\EOF >x &&
+ 1
+ 2
+
+ 3
+ 4
+ 5
+
+ 6
+ 7
+ EOF
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+
+ 1
+ 2
+ 3
+ 4
+ 5
+ 6
+
+ 7
+ EOF
+ git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,6 +1,7 @@
+ +change
+ +
+ 1
+ 2
+ -
+ 3
+ 4
+ 5
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: before change' '
+ cat <<-\EOF >x &&
+ 1
+ 2
+
+ 3
+ 4
+ 5
+ 6
+ 7
+ EOF
+ git update-index x &&
+ cat <<-\EOF >x &&
+
+ 1
+ 2
+ 3
+ 4
+ 5
+
+ 6
+ 7
+ change
+ EOF
+ git diff --inter-hunk-context=100 --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -4,5 +4,7 @@
+ 3
+ 4
+ 5
+ +
+ 6
+ 7
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: between changes' '
+ cat <<-\EOF >x &&
+ 1
+ 2
+ 3
+ 4
+ 5
+
+
+ 6
+ 7
+ 8
+ 9
+ 10
+ EOF
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+ 1
+ 2
+
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+
+ 9
+ 10
+ change
+ EOF
+ git diff --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,5 +1,7 @@
+ +change
+ 1
+ 2
+ +
+ 3
+ 4
+ 5
+ @@ -8,5 +8,7 @@
+ 6
+ 7
+ 8
+ +
+ 9
+ 10
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: between changes (with interhunkctx)' '
+ test_seq 10 >x &&
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+ 1
+ 2
+
+ 3
+ 4
+ 5
+
+ 6
+ 7
+ 8
+ 9
+
+ 10
+ change
+ EOF
+ git diff --inter-hunk-context=2 --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,10 +1,15 @@
+ +change
+ 1
+ 2
+ +
+ 3
+ 4
+ 5
+ +
+ 6
+ 7
+ 8
+ 9
+ +
+ 10
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: scattered spaces' '
+ test_seq 10 >x &&
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+ 1
+ 2
+ 3
+
+ 4
+
+ 5
+
+ 6
+
+
+ 7
+
+ 8
+ 9
+ 10
+ change
+ EOF
+ git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,3 +1,4 @@
+ +change
+ 1
+ 2
+ 3
+ @@ -8,3 +15,4 @@
+ 8
+ 9
+ 10
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: spaces coalesce' '
+ test_seq 6 >x &&
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+ 1
+ 2
+ 3
+
+ 4
+
+ 5
+
+ 6
+ change
+ EOF
+ git diff --inter-hunk-context=4 --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,6 +1,11 @@
+ +change
+ 1
+ 2
+ 3
+ +
+ 4
+ +
+ 5
+ +
+ 6
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
+test_expect_success 'ignore-blank-lines: mix changes and blank lines' '
+ test_seq 16 >x &&
+ git update-index x &&
+ cat <<-\EOF >x &&
+ change
+ 1
+ 2
+
+ 3
+ 4
+ 5
+ change
+ 6
+ 7
+ 8
+
+ 9
+ 10
+ 11
+ change
+ 12
+ 13
+ 14
+
+ 15
+ 16
+ change
+ EOF
+ git diff --ignore-blank-lines >out.tmp &&
+ cat <<-\EOF >expected &&
+ diff --git a/x b/x
+ --- a/x
+ +++ b/x
+ @@ -1,8 +1,11 @@
+ +change
+ 1
+ 2
+ +
+ 3
+ 4
+ 5
+ +change
+ 6
+ 7
+ 8
+ @@ -9,8 +13,11 @@
+ 9
+ 10
+ 11
+ +change
+ 12
+ 13
+ 14
+ +
+ 15
+ 16
+ +change
+ EOF
+ compare_diff_patch expected out.tmp
+'
+
test_expect_success 'check mixed spaces and tabs in indent' '
# This is indented with SP HT SP.