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From: lwa%mit-csr@sri-unix.UUCP
Newsgroups: net.unix-wizards
Subject: Re: need info: %r in printf
Message-ID: <12667@sri-arpa.UUCP>
Date: Sat, 15-Oct-83 11:48:00 EDT
Article-I.D.: sri-arpa.12667
Posted: Sat Oct 15 11:48:00 1983
Date-Received: Sat, 22-Oct-83 02:42:30 EDT
Lines: 12

The %r format item is "recursive format".  It causes the next argument
in the argument list (which should be a string) to be interpreted as
a format string; the remainder of the arguments in the argument list
are printed according to the new format string.  Note that this isn't
really "recursive" in that the format strings aren't nested; when
the end of the new format string is reached the printf terminates.

Fortunately, this means it's pretty easy to simulate %r: just
concatenate (strcat) the original format string and the "recursive"
string and use the result as the format string to printf.
					-Larry Allen
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