Merge branch 'maint'

diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index 22ef7d44b08ac7ec20e799a194e27205c794c290..0720001281db6aeb5a3b6bb46cd6914ad7d78d33 100755 (executable)
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -125,6 +125,38 @@ echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
 test_expect_success 'force diff with "diff"' '
        echo >.gitattributes "file diff" &&
        git diff >actual &&
+       test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
+'
+
+test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
+       echo anotherfile > file2 &&
+       git add file2 &&
+       git commit -m "added 2nd file" &&
+       echo modified >file2 &&
+       GIT_EXTERNAL_DIFF=echo git diff
+'
+
+echo "#!$SHELL_PATH" >fake-diff.sh
+cat >> fake-diff.sh <<\EOF
+cat $2 >> crlfed.txt
+EOF
+chmod a+x fake-diff.sh
+
+keep_only_cr () {
+       tr -dc '\015'
+}
+
+test_expect_success 'external diff with autocrlf = true' '
+       git config core.autocrlf true &&
+       GIT_EXTERNAL_DIFF=./fake-diff.sh git diff &&
+       test $(wc -l < crlfed.txt) = $(cat crlfed.txt | keep_only_cr | wc -c)
+'
+
+test_expect_success 'diff --cached' '
+       git add file &&
+       git update-index --assume-unchanged file &&
+       echo second >file &&
+       git diff --cached >actual &&
        test_cmp ../t4020/diff.NUL actual
 '