[tex-live] Re: [tex-k] kpse_open_file, uppercase .TTF extension

[Karl Berry]

    hahe at hahepc1:~$ pdfetex xx.TEX

TeX will read anything (e.g., foo.bar), though.  The extension only
matters if trying to find it by default.

I don't think there has ever been support for case-folding on extensions.
For example:

    $ touch xx.TEX
    $ tex xx
    ...
    ! I can't find file `xx'.

And, more analogously to your TTF case:

    $ cp `kpsewhich cmr10.tfm` foobar.TFM
    $ tex
    **\font\x=foobar \relax
    ...
    ! Font \x=foobar not loadable: Metric (TFM) file not found.

It seems like a reasonable feature to add, though, at first blush.
Up to Olaf ...

k