Side question: it looks like ICU is used by the standard library on
non-Apple platforms. Would it be possible to make it a dependency of the
compiler too? If we want to explicitly detect emoji, for instance, it'd be
nice to use a canonical library that already does it.

On Sun, Sep 18, 2016 at 12:33 PM, Jacob Bandes-Storch <>

> *TLÍžDR:*
> Swift 4 Stage 1 seeks to prioritize "Source stability features". Most
> source-breaking changes were done with in Swift 3; however, the
> categorization of Unicode characters into identifiers & operators was never
> thoroughly discussed on swift-evolution. This seems like it might be our
> last chance, and I think there are some big improvements to be had.
> I've gathered some information+thoughts into an early-stage pitch /
> pre-proposal. It doesn't really have a conclusion, so I'm hoping we can
> discuss these issues and come up with good (pragmatic) solutions here. I
> imagine this can morph into a proposal later.
> You can read the following in nicer HTML form at
> jtbandes/c0b0c072181dcd22c3147802025d0b59
> I look forward to the discussion!
> -Jacob
> <snip>
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