[swift-evolution] [Proposal] Refining Identifier and Operator Symbology

[Chris Lattner]

> On Oct 20, 2016, at 5:03 PM, Jonathan S. Shapiro via swift-evolution <swift-evolution at swift.org> wrote:
> 
> On Thu, Oct 20, 2016 at 12:25 PM, Jonathan Hull via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> Would it be possible to do the following:
> 
> • Have 1 group which are always used as identifiers.  This would probably be the identifiers from this proposal.
> 
> • Have a 2nd group which are always used as operators (quite a bit larger than the group proposed by this proposal).  At a minimum, the following ascii + set operators + math operators:
> (± ≠ ≤ ≥ ¿ ¡ ™ ¢ ¶ • ° ƒ © √ ∆ ◊ § ≈  ∫ ÷ ¬ ).
> 
> • Everything else is in a 3rd group. 
> 
> No. This is far, far too complicated, and it mixes up the layers of the compilation process.

Right.  Any proposal that changes parser behavior based on a visible operator declaration will break the ability for Swift to separately compile files.  This will have massive tooling ramifications that are almost certainly a non-starter.

-Chris

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