headers: normalize the spelling of some header guards

diff --git a/t/t4060-diff-submodule-option-diff-format.sh b/t/t4060-diff-submodule-option-diff-format.sh
index 0eba4620f039aaa529afa2cf3fbcff2559857b9e..9dcb69df5c3684b02b09278ecd64b19f5473ef0b 100755 (executable)
--- a/t/t4060-diff-submodule-option-diff-format.sh
+++ b/t/t4060-diff-submodule-option-diff-format.sh
@@ -392,9 +392,7 @@ test_expect_success 'typechanged submodule(blob->submodule)' '
 commit_file sm1 &&
 test_expect_success 'submodule is up to date' '
        git diff-index -p --submodule=diff HEAD >actual &&
-       cat >expected <<-EOF &&
-       EOF
-       test_cmp expected actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains untracked content' '
@@ -408,17 +406,17 @@ test_expect_success 'submodule contains untracked content' '
 
 test_expect_success 'submodule contains untracked content (untracked ignored)' '
        git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains untracked content (dirty ignored)' '
        git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains untracked content (all ignored)' '
        git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains untracked and modified content' '
@@ -458,13 +456,13 @@ test_expect_success 'submodule contains untracked and modified content (untracke
 test_expect_success 'submodule contains untracked and modified content (dirty ignored)' '
        echo new > sm1/foo6 &&
        git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains untracked and modified content (all ignored)' '
        echo new > sm1/foo6 &&
        git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'submodule contains modified content' '
@@ -549,7 +547,7 @@ test_expect_success 'modified submodule contains untracked content (dirty ignore
 
 test_expect_success 'modified submodule contains untracked content (all ignored)' '
        git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'modified submodule contains untracked and modified content' '
@@ -609,7 +607,7 @@ test_expect_success 'modified submodule contains untracked and modified content
 test_expect_success 'modified submodule contains untracked and modified content (all ignored)' '
        echo modification >> sm1/foo6 &&
        git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
-       ! test -s actual
+       test_must_be_empty actual
 '
 
 # NOT OK