gripe: variable arg lists

[Henry Spencer]

> But there is a standard method of dealing with variable argument lists.
> 	#include <varargs.h>
> The contents of the file differ from machine to machine, but the `entry
> points' are standard.

Unfortunately, the ability to implement <varargs.h> is, to some extent,
machine-dependent.  There are some machines where variable argument lists
are very hard to do, and must be kludged in very machine-dependent ways.

> As to why _doprnt() was used: that's pretty easy.  There is no standard
> analog to printf which accepts a variable argument list *as an argument*.

There is, however, a portable mechanism to do this job:  sprintf followed
by passing the resulting string to whoever wants it.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry