[tex-live] Error TL12 kpsewhich in ifxetex

[Peter Breitenlohner]

Hi,

for fopen() the modes "rb" and "wb" are allowed on all systems, however, the
"b" is ignored on Posix systems.  It was my mistake to assume that the same
is true for popen(), where Posix allows only "r" and "w".  From previous
messages on this subject it seems, however, that several Unix
implementations do allow an additional "b".

This will be fixed after the freeze.

Regards
Peter Breitenlohner <peb at mppmu.mpg.de>