[swift-evolution] [Proposal] Eliminating Swift's Screaming Snake Case Identifiers

[Joe Groff]

> On Jan 22, 2016, at 2:04 PM, Jack Lawrence via swift-evolution <swift-evolution at swift.org> wrote:
> 
> I also use it in a similar way in playgrounds to inject some hidden preamble code and then rewrite the location of diagnostics.

Given the compiler-internal-ish nature of the existing `#line` feature (and since it's yet another thing copped from C with little consideration), I feel like we'd prefer to rename *that* if we had a better more mainstream use for the name #line.

-Joe