R-alpha: bug in passing of empty (...)

[Ross Ihaka]

This is a "feature" of ls().  When invoked with no arguments it returns
the list of variables \emph{in the environment it is called from}.
This is to make it useful in conjunction with debug() and browser().
It allows you find out what the current local variables are.

To get the same effect as a top level ls(), you must expicitly do
	ls(pos=1)             # may fail if we allow attaching at pos=1
	ls(envir=.GlobalEnv)  # safer

Ross
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