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...uate all its remaining arguments in the context of the data passed to the method. In order for the lazy evaluation to work, plot.formula would have to (1) know and skip all such arguments by name on line 6, minding partial matching, (2) rewrite them into the form evalq(original_argument_expression, model_frame, parent_frame) so that they would be able to access both the data and the variables visible in the frame of the caller, and (3) give these expressions to do.call() in place of the original ones. (1) sounds especially brittle since plot.formula() may dispatch to other plot.* methods. Additionally,...

Is the following a bug in your opinion? I think so. This works as expected: ``` with(mtcars, plot(wt, mpg, plot.first = { plot.window(range(wt), range(mpg)) arrows(3, 15, 4, 30) })) ``` This does not. ``` plot(mpg ~ wt, data = mtcars, plot.first = { plot.window(range(wt), range(mpg)) arrows(3, 15, 4, 30) }) ``` With error: ``` Error in arrows(3, 15, 4, 30) : plot.new has not