diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index 80bf108f54..cc917b257e 100755
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -93,42 +93,42 @@ test_expect_success 'difftool forwards arguments to diff' '
 
 for opt in '' '--dir-diff'
 do
-	test_expect_success "difftool ${opt:-without options} ignores exit code" "
+	test_expect_success "difftool ${opt:-without options} ignores exit code" '
 		test_config difftool.error.cmd false &&
 		git difftool ${opt} -y -t error branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} forwards exit code with --trust-exit-code" "
+	test_expect_success "difftool ${opt:-without options} forwards exit code with --trust-exit-code" '
 		test_config difftool.error.cmd false &&
 		test_must_fail git difftool ${opt} -y --trust-exit-code -t error branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} forwards exit code with --trust-exit-code for built-ins" "
+	test_expect_success "difftool ${opt:-without options} forwards exit code with --trust-exit-code for built-ins" '
 		test_config difftool.vimdiff.path false &&
 		test_must_fail git difftool ${opt} -y --trust-exit-code -t vimdiff branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} honors difftool.trustExitCode = true" "
+	test_expect_success "difftool ${opt:-without options} honors difftool.trustExitCode = true" '
 		test_config difftool.error.cmd false &&
 		test_config difftool.trustExitCode true &&
 		test_must_fail git difftool ${opt} -y -t error branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} honors difftool.trustExitCode = false" "
+	test_expect_success "difftool ${opt:-without options} honors difftool.trustExitCode = false" '
 		test_config difftool.error.cmd false &&
 		test_config difftool.trustExitCode false &&
 		git difftool ${opt} -y -t error branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} ignores exit code with --no-trust-exit-code" "
+	test_expect_success "difftool ${opt:-without options} ignores exit code with --no-trust-exit-code" '
 		test_config difftool.error.cmd false &&
 		test_config difftool.trustExitCode true &&
 		git difftool ${opt} -y --no-trust-exit-code -t error branch
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} stops on error with --trust-exit-code" "
-		test_when_finished 'rm -f for-diff .git/fail-right-file' &&
-		test_when_finished 'git reset -- for-diff' &&
+	test_expect_success "difftool ${opt:-without options} stops on error with --trust-exit-code" '
+		test_when_finished "rm -f for-diff .git/fail-right-file" &&
+		test_when_finished "git reset -- for-diff" &&
 		write_script .git/fail-right-file <<-\EOF &&
 		echo failed
 		exit 1
@@ -138,19 +138,19 @@ do
 		test_must_fail git difftool ${opt} -y --trust-exit-code \
 			--extcmd .git/fail-right-file branch >actual &&
 		test_line_count = 1 actual
-	"
+	'
 
-	test_expect_success "difftool ${opt:-without options} honors exit status if command not found" "
+	test_expect_success "difftool ${opt:-without options} honors exit status if command not found" '
 		test_config difftool.nonexistent.cmd i-dont-exist &&
 		test_config difftool.trustExitCode false &&
-		if test "${opt}" = '--dir-diff'
+		if test "${opt}" = --dir-diff
 		then
 			expected_code=127
 		else
 			expected_code=128
 		fi &&
-		test_expect_code \${expected_code} git difftool ${opt} -y -t nonexistent branch
-	"
+		test_expect_code ${expected_code} git difftool ${opt} -y -t nonexistent branch
+	'
 done
 
 test_expect_success 'difftool honors --gui' '