Fix "diff --check" whitespace detection

diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index 79fdff3f3a87cfe45b7fefa96e350675bd4e048c..6adf9d11d03c3e9b1b7ee1ee46364f0e3a755016 100755 (executable)
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -117,4 +117,13 @@ EOF
 git diff -b > out
 test_expect_success 'another test, with -b' 'git diff expect out'
 
+
+test_expect_success 'check mixed spaces and tabs in indent' '
+
+       # This is indented with SP HT SP.
+       echo "   foo();" > x &&
+       git diff --check | grep "space before tab"
+
+'
+
 test_done