t/perf: factor out percent calculations

diff --git a/t/t9903-bash-prompt.sh b/t/t9903-bash-prompt.sh
index 04440685a66d6baff98c1739979c8f866255572b..ab890d3d4b3e2a39bb787bd29d7865c46f64c7f6 100755 (executable)
--- a/t/t9903-bash-prompt.sh
+++ b/t/t9903-bash-prompt.sh
@@ -63,18 +63,15 @@ test_expect_success 'prompt - unborn branch' '
        test_cmp expected "$actual"
 '
 
-repo_with_newline='repo
-with
-newline'
-
-if test_have_prereq !MINGW && mkdir "$repo_with_newline" 2>/dev/null
-then
-       test_set_prereq FUNNYNAMES
-else
+if test_have_prereq !FUNNYNAMES; then
        say 'Your filesystem does not allow newlines in filenames.'
 fi
 
 test_expect_success FUNNYNAMES 'prompt - with newline in path' '
+    repo_with_newline="repo
+with
+newline" &&
+       mkdir "$repo_with_newline" &&
        printf " (master)" >expected &&
        git init "$repo_with_newline" &&
        test_when_finished "rm -rf \"$repo_with_newline\"" &&