Any function of ::Real is also a function of ::Char

[danluu]

I'm not sure this is considered a bug, but I find it pretty strange that things like expm1('-') and sleep('a') aren't errors.

I suppose this is so you can do things like 'a' + 1 without having to write char(int(a) + 1)?

[simonster]

I think this is a dup of #5844

[danluu]

Oh, looks like it.

[JeffBezanson]

I suppose this is another vote in favor of that change.