fix for plotting function; closes #291

src/args.jl

@@ -252,6 +252,7 @@ const _suppress_warnings = Set{Symbol}([
     :subplot_index,
     :series_plotindex,
     :link,
+    :plot_object,
 ])
 
 # add defaults for the letter versions

src/plot.jl

@@ -231,6 +231,8 @@ function _plot!(plt::Plot, d::KW, args...)
     #     _update_subplot_args(plt, sp, d, idx)
     # end
 
+    d[:plot_object] = plt
+
     # the grouping mechanism is a recipe on a GroupBy object
     # we simply add the GroupBy object to the front of the args list to allow
     # the recipe to be applied

src/series_new.jl

@@ -270,7 +270,10 @@ end
 #     process_inputs(plt, d, f, xmin(plt), xmax(plt))
 # end
 
-@recipe f(f::FuncOrFuncs) = f, xmin(plt), xmax(plt)
+@recipe function f(f::FuncOrFuncs)
+    plt = d[:plot_object]
+    f, xmin(plt), xmax(plt)
+end
 
 #
 # # --------------------------------------------------------------------