Introduce the function strip_path_suffix()

diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index 637b4e19d52e81cf1472a4ed9dcfb0c9ff00da2b..281680d95afacb291d56d9d7f23efed1f3169e93 100755 (executable)
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -43,6 +43,13 @@ test_expect_success 'GIT_EXTERNAL_DIFF environment should apply only to diff' '
 
 '
 
+test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' '
+
+       GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff |
+       grep "^diff --git a/file b/file"
+
+'
+
 test_expect_success 'diff attribute' '
 
        git config diff.parrot.command echo &&
@@ -68,6 +75,13 @@ test_expect_success 'diff attribute should apply only to diff' '
 
 '
 
+test_expect_success 'diff attribute and --no-ext-diff' '
+
+       git diff --no-ext-diff |
+       grep "^diff --git a/file b/file"
+
+'
+
 test_expect_success 'diff attribute' '
 
        git config --unset diff.parrot.command &&
@@ -94,6 +108,13 @@ test_expect_success 'diff attribute should apply only to diff' '
 
 '
 
+test_expect_success 'diff attribute and --no-ext-diff' '
+
+       git diff --no-ext-diff |
+       grep "^diff --git a/file b/file"
+
+'
+
 test_expect_success 'no diff with -diff' '
        echo >.gitattributes "file -diff" &&
        git diff | grep Binary
@@ -104,7 +125,15 @@ echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
 test_expect_success 'force diff with "diff"' '
        echo >.gitattributes "file diff" &&
        git diff >actual &&
-       test_cmp ../t4020/diff.NUL 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
 '
 
 test_done