Like most things, it's an option see try_std_extension_first
in section 6.2 of texdoc kpathsea On Tue, 20 Sept 2022 at 17:33, Philip Taylor (Hellenic Institute) < p.tay...@hellenic-institute.uk> wrote: > On 20/09/2022 17:29, David Carlisle wrote: > > feature, and not xetex specific > > Thank you, David. Evil, nonetheless, and highly counter-intuitive. > > -- > *** Phil.* >