[m-rev.] for review: improve dir./

[Julien Fischer]

On Wed, 13 Sep 2023, Zoltan Somogyi wrote:

> On 2023-09-13 12:26 +10:00 AEST, "Julien Fischer" <jfischer at opturion.com> wrote:
>> The issue I encountered with MSVC is due to testing that FileName is
>> the beginning of a current drive relative path here instead of DirName
>
> Thanks for that. Looking back at the DIFF.dir I posted three days ago,
> the bug was introduced there; until then, the test *was* on DirName.
>
> Have you finished your review, so I can act on Peter's suggestions?

You can go ahead. I have further testing to do on Windows, but the
results shouldn't differ from the MSVC run.  (I will retest everything
once you've finished in any case.)

Julien.