core.whitespace: cr-at-eol

This new error mode allows a line to have a carriage return at the
end of the line when checking and fixing trailing whitespace errors.

Some people like to keep CRLF line ending recorded in the repository,
and still want to take advantage of the automated trailing whitespace
stripping.  We still show ^M in the diff output piped to "less" to
remind them that they do have the CR at the end, but these carriage
return characters at the end are no longer flagged as errors.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/t/t4019-diff-wserror.sh b/t/t4019-diff-wserror.sh
index 67e080bdb..0d9cbb626 100755
--- a/t/t4019-diff-wserror.sh
+++ b/t/t4019-diff-wserror.sh
@@ -12,6 +12,7 @@ test_expect_success setup '
 	echo "         Eight SP indent" >>F &&
 	echo " 	HT and SP indent" >>F &&
 	echo "With trailing SP " >>F &&
+	echo "Carriage ReturnQ" | tr Q "\015" >>F &&
 	echo "No problem" >>F
 
 '
@@ -27,6 +28,7 @@ test_expect_success default '
 	grep Eight normal >/dev/null &&
 	grep HT error >/dev/null &&
 	grep With error >/dev/null &&
+	grep Return error >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -41,6 +43,7 @@ test_expect_success 'without -trail' '
 	grep Eight normal >/dev/null &&
 	grep HT error >/dev/null &&
 	grep With normal >/dev/null &&
+	grep Return normal >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -56,6 +59,7 @@ test_expect_success 'without -trail (attribute)' '
 	grep Eight normal >/dev/null &&
 	grep HT error >/dev/null &&
 	grep With normal >/dev/null &&
+	grep Return normal >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -71,6 +75,7 @@ test_expect_success 'without -space' '
 	grep Eight normal >/dev/null &&
 	grep HT normal >/dev/null &&
 	grep With error >/dev/null &&
+	grep Return error >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -86,6 +91,7 @@ test_expect_success 'without -space (attribute)' '
 	grep Eight normal >/dev/null &&
 	grep HT normal >/dev/null &&
 	grep With error >/dev/null &&
+	grep Return error >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -101,6 +107,7 @@ test_expect_success 'with indent-non-tab only' '
 	grep Eight error >/dev/null &&
 	grep HT normal >/dev/null &&
 	grep With normal >/dev/null &&
+	grep Return normal >/dev/null &&
 	grep No normal >/dev/null
 
 '
@@ -116,6 +123,39 @@ test_expect_success 'with indent-non-tab only (attribute)' '
 	grep Eight error >/dev/null &&
 	grep HT normal >/dev/null &&
 	grep With normal >/dev/null &&
+	grep Return normal >/dev/null &&
+	grep No normal >/dev/null
+
+'
+
+test_expect_success 'with cr-at-eol' '
+
+	rm -f .gitattributes
+	git config core.whitespace cr-at-eol
+	git diff --color >output
+	grep "$blue_grep" output >error
+	grep -v "$blue_grep" output >normal
+
+	grep Eight normal >/dev/null &&
+	grep HT error >/dev/null &&
+	grep With error >/dev/null &&
+	grep Return normal >/dev/null &&
+	grep No normal >/dev/null
+
+'
+
+test_expect_success 'with cr-at-eol (attribute)' '
+
+	git config --unset core.whitespace
+	echo "F whitespace=trailing,cr-at-eol" >.gitattributes
+	git diff --color >output
+	grep "$blue_grep" output >error
+	grep -v "$blue_grep" output >normal
+
+	grep Eight normal >/dev/null &&
+	grep HT error >/dev/null &&
+	grep With error >/dev/null &&
+	grep Return normal >/dev/null &&
 	grep No normal >/dev/null
 
 '