Am 08.04.2015 um 09:51 schrieb Ulrike Fischer:
> I don't see what harm it can do to load an fd-file apart from a tiny
> loss of speed and memory. Probably it would be okay too to load it
> directly in the \DeclareFontSubstituation command in t5enc.def.
while I agree that it should not ... I have have seen that argument so
often and in the end something broke after all with the most harmless
change that one could imagine
anyway, it seems to work without affecting anything in the LaTeX test
suite and so I added it into the kernel -- not sure it will make it into
the upcoming release though