Merge branch 'dd/t5403-modernise'

Test micro-clean-up. * dd/t5403-modernise: t5403: use test_path_is_file instead of test -f

Junio C Hamano committed Jan 8, 2026 at 16:40 UTC 512351f2a84388d223ee6bb763ce5e6c5965f1b8

No changes.