Set or unset debugging flags based on a call to a function. Takes into account S3/S4 method dispatch based on the classes of the arguments in the call.
An R expression calling a function. The called function will be debugged. See Details.
debugcall debugs the non-generic function, S3 method or S4
method that would be called by evaluating
call. Thus, the user
does not need to specify the signature when debugging
methods. Although the call is actually to the generic, it is the
method that is debugged, not the generic, except for non-standard S3
debugcall invisibly returns the debugged call expression.
Non-standard evaluation is used to retrieve the
substitute). For this reason, passing a variable
containing a call expression, rather than the call expression itself,
will not work.
debug for the primary debugging interface
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