[tex-live] Make the extensions for formats different for each engine.

[Hartmut Henkel]

On Thu, 15 Apr 2004, Hans Hagen wrote:

> Talking about fingerprints, something similar is needed for the font
> system as well; when one generates a font.tfm+font.vf and afterwards
> decides to use a non virtual one (i.e. regenerates a new font.tfm),
> the vf is still used since it has the same name but no longer has to
> be used (if one is not aware of that file being there ...); if such a
> vf would have a fingerprint for each referenced file (say a checksum
> or so), then that could be used to determine inconsistencies.

Do you get an innocuous warning "checksum mismatch in font xyz.vf
ignored"? Or "design size mismatch in font xyz.vf ignored"?

Both .tfm and .vf files normally contain the same matching checksum,
which is checked when the .vf-file is loaded. Now if they don't match,
there will be this pdftex warning, but the .vf file will be read in.
Same for a design size mismatch. So if you sometimes get such a warning
message, tuning pdftex.ch to a (silent) .vf read fail might help a
little.

But it doesn't help if you just regenerate the .tfm-file unchanged,
since then the checksum would be the same...

Regards, Hartmut