JuliaLang/julia — pull request #4011 by stevengj (2013-08-10 20:10:33+00:00)
Title: RFC: rm warning about type parameters shadowing identifiers

As discussed in JuliaLang/IJulia.jl#37, this warning is analogous to giving a warning for defining `function f(x)` when there's a global called `x` (similar to gcc's `-Wshadow` option). It doesn't make sense to have this warning (at least, not by default) for type parameters and not for other formal parameters.