What ever happened to %r in printf ?

[Henry Spencer]

> Does anyone know why the %r formatting option of printf was
> never documented on older UNIX systems ?  It doesn't exist
> on the Sys 5 Rel 2 we have.

There is no portable way to write the corresponding argument.  vprintf
(in cooperation with varargs.h) is intended as a portable way to get
the same effect.
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