: for factors (PR#139)

The following example from the help page does not work:

f1_ gl(2,3); f1
f2_ gl(3,2); f2
f1:f2 # a factor, the ``cross''  f1 x f2

yields

Warning in f1:f2 : Numerical expression has 6 elements: only the first used
[1] 1

whereas R-0.61.2 yields

f1:f2 # a factor, the ``cross''  f1 x f2

[1] 1:1 1:1 1:2 2:2 2:3 2:3

Note that the new behavior is consistent with S+ (but not with the
help page).

	Andreas


--please do not edit the information below--

Version:
 platform = i686-unknown-linux
 arch = i686
 os = linux
 system = i686, linux
 status = in progress
 status.rev = 0
 major = 0
 minor = 63.3
 year = 1999
 month = February
 day = 24
 language = R

Search Path:
 .GlobalEnv, Autoloads, package:base

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