It seems that syntaxis has changed as some point (I am with `julia 1.1`, `Plots v0.26.0`). ```julia @recipe function f(::Type{Val{:my_histogram}}, x, y, z) edges, counts = myhist!(d) # leads to the error ``` The error is `UndefVarError: d not defined` I do not see with `@macroexpand` how the `d` would appear in there