mingw: mark t9100's test cases with appropriate prereqs

diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh
index 627ef854d5c804c0248a728862fdf9d4ea344568..602b08b1416d27d837737019ba615b65149e5fe9 100755 (executable)
--- a/t/t0060-path-utils.sh
+++ b/t/t0060-path-utils.sh
@@ -36,12 +36,21 @@ if test $rootoff = 2; then
        rootoff=        # we are on Unix
 else
        rootoff=$(($rootoff-1))
+       # In MSYS2, the root directory "/" is translated into a Windows
+       # directory *with* trailing slash. Let's test for that and adjust
+       # our expected longest ancestor length accordingly.
+       case "$(test-path-utils print_path /)" in
+       */) rootslash=1;;
+       *) rootslash=0;;
+       esac
 fi
 
 ancestor() {
        # We do some math with the expected ancestor length.
        expected=$3
        if test -n "$rootoff" && test "x$expected" != x-1; then
+               expected=$(($expected-$rootslash))
+               test $expected -lt 0 ||
                expected=$(($expected+$rootoff))
        fi
        test_expect_success "longest ancestor: $1 $2 => $expected" \