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-rw-r--r--diff.c3
-rwxr-xr-xt/t4019-diff-wserror.sh20
2 files changed, 21 insertions, 2 deletions
diff --git a/diff.c b/diff.c
index 8746c60..6954f99 100644
--- a/diff.c
+++ b/diff.c
@@ -1631,7 +1631,8 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
ecb.priv = &data;
xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
- if (data.trailing_blanks_start) {
+ if ((data.ws_rule & WS_TRAILING_SPACE) &&
+ data.trailing_blanks_start) {
fprintf(o->file, "%s:%d: ends with blank lines.\n",
data.filename, data.trailing_blanks_start);
data.status = 1; /* report errors */
diff --git a/t/t4019-diff-wserror.sh b/t/t4019-diff-wserror.sh
index 0d9cbb6..7eae1f4 100755
--- a/t/t4019-diff-wserror.sh
+++ b/t/t4019-diff-wserror.sh
@@ -13,7 +13,8 @@ test_expect_success setup '
echo " HT and SP indent" >>F &&
echo "With trailing SP " >>F &&
echo "Carriage ReturnQ" | tr Q "\015" >>F &&
- echo "No problem" >>F
+ echo "No problem" >>F &&
+ echo >>F
'
@@ -160,4 +161,21 @@ test_expect_success 'with cr-at-eol (attribute)' '
'
+test_expect_success 'trailing empty lines (1)' '
+
+ rm -f .gitattributes &&
+ test_must_fail git diff --check >output &&
+ grep "ends with blank lines." output &&
+ grep "trailing whitespace" output
+
+'
+
+test_expect_success 'trailing empty lines (2)' '
+
+ echo "F -whitespace" >.gitattributes &&
+ git diff --check >output &&
+ ! test -s output
+
+'
+
test_done