maint: check return of split_cmdline to avoid bad config strings

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 8f4c29a6b5a263d6f18d95757b76ac55e9443068..9337b81064bbdbe4e7f590830b458c48226c4a17 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -17,6 +17,7 @@ test_expect_success setup '
        export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 
        mkdir dir &&
+       mkdir dir2 &&
        for i in 1 2 3; do echo $i; done >file0 &&
        for i in A B; do echo $i; done >dir/sub &&
        cat file0 >file2 &&
@@ -111,7 +112,7 @@ do
                } >"$actual" &&
                if test -f "$expect"
                then
-                       git diff "$expect" "$actual" &&
+                       test_cmp "$expect" "$actual" &&
                        rm -f "$actual"
                else
                        # this is to help developing new tests.
@@ -242,6 +243,9 @@ format-patch --inline --stdout initial..side
 format-patch --inline --stdout initial..master^
 format-patch --inline --stdout initial..master
 format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
+config format.subjectprefix DIFFERENT_PREFIX
+format-patch --inline --stdout initial..master^^
+format-patch --stdout --cover-letter -n initial..master^
 
 diff --abbrev initial..side
 diff -r initial..side
@@ -252,6 +256,8 @@ diff --patch-with-stat initial..side
 diff --patch-with-raw initial..side
 diff --patch-with-stat -r initial..side
 diff --patch-with-raw -r initial..side
+diff --name-status dir2 dir
+diff --no-index --name-status dir2 dir
 EOF
 
 test_done