JuliaLang/julia — pull request #9246 by mbauman (2014-12-04 03:50:25+00:00)
Title: Define Base.copy for ::AbstractTime

This comes up when specifying the plot bounds in Dates (e.g., in https://github.com/dcjones/Gadfly.jl/issues/354). I suppose defining this for all `::AbstractTime` is a little dangerous as others could define their own mutable subtypes. I could easily change this into a large union if desired. But I think, in general, there should be a copy method for these types, no?