format-patch: wrap long header lines

diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index 935d101fe8d880ff426452ca6f611ce8d30b8bc1..9059bcd69eec7a718b6017356c82ec163875c042 100755 (executable)
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -330,7 +330,7 @@ test_expect_success 'check space before tab in indent (space-before-tab: on)' '
 
 test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
 
-       git config core.whitespace "-indent-with-non-tab"
+       git config core.whitespace "-indent-with-non-tab" &&
        echo "        foo ();" > x &&
        git diff --check
 
@@ -344,6 +344,13 @@ test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
 
 '
 
+test_expect_success 'ditto, but tabwidth=9' '
+
+       git config core.whitespace "indent-with-non-tab,tabwidth=9" &&
+       git diff --check
+
+'
+
 test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
 
        git config core.whitespace "indent-with-non-tab" &&
@@ -352,6 +359,20 @@ test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab:
 
 '
 
+test_expect_success 'ditto, but tabwidth=10' '
+
+       git config core.whitespace "indent-with-non-tab,tabwidth=10" &&
+       test_must_fail git diff --check
+
+'
+
+test_expect_success 'ditto, but tabwidth=20' '
+
+       git config core.whitespace "indent-with-non-tab,tabwidth=20" &&
+       git diff --check
+
+'
+
 test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
 
        git config core.whitespace "-tab-in-indent" &&
@@ -376,6 +397,13 @@ test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
 
 '
 
+test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' '
+
+       git config core.whitespace "tab-in-indent,tabwidth=1" &&
+       test_must_fail git diff --check
+
+'
+
 test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
 
        git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
@@ -491,4 +519,41 @@ test_expect_success 'combined diff with autocrlf conversion' '
 
 '
 
+# Start testing the colored format for whitespace checks
+
+test_expect_success 'setup diff colors' '
+       git config color.diff always &&
+       git config color.diff.plain normal &&
+       git config color.diff.meta bold &&
+       git config color.diff.frag cyan &&
+       git config color.diff.func normal &&
+       git config color.diff.old red &&
+       git config color.diff.new green &&
+       git config color.diff.commit yellow &&
+       git config color.diff.whitespace "normal red" &&
+
+       git config core.autocrlf false
+'
+cat >expected <<\EOF
+<BOLD>diff --git a/x b/x<RESET>
+<BOLD>index 9daeafb..2874b91 100644<RESET>
+<BOLD>--- a/x<RESET>
+<BOLD>+++ b/x<RESET>
+<CYAN>@@ -1 +1,4 @@<RESET>
+ test<RESET>
+<GREEN>+<RESET><GREEN>{<RESET>
+<GREEN>+<RESET><BRED>  <RESET>
+<GREEN>+<RESET><GREEN>}<RESET>
+EOF
+
+test_expect_success 'diff that introduces a line with only tabs' '
+       git config core.whitespace blank-at-eol &&
+       git reset --hard &&
+       echo "test" > x &&
+       git commit -m "initial" x &&
+       echo "{NTN}" | tr "NT" "\n\t" >> x &&
+       git -c color.diff=always diff | test_decode_color >current &&
+       test_cmp expected current
+'
+
 test_done