Tracking issue for splitting Show into String and Show (RFC 504)

[aturon]

rust-lang/rfcs#504

[aturon]

cc @alexcrichton

[seanmonstar]

I've been working on this. I have the traits, and many of the important implementations switched. Most debug lines will need to be stage0ed.

However, I've been having a heck of a time trying to make a lint to check if a type implements fmt::Show.

[alexcrichton]

Let's hold off on the lint for now, I'd like to decide on that after we get everything landed first. I was also planning on doing a two phase implementation where we first add parsing support for :?, make a snapshot, and then make all the changes (may make it easier), but I'm also more than willing to review changes!

[alexcrichton]

ping @seanmonstar, I think that the :? syntax is in a snapshot now, so we should be ready to go with this! If you're busy though, I can certainly take over too :)

[seanmonstar]

I've been tackling this. Finally getting stage2 compiling.

On Mon, Dec 29, 2014, 8:18 PM Alex Crichton notifications@github.com
wrote:

ping @seanmonstar https://github.com/seanmonstar, I think that the :?
syntax is in a snapshot now, so we should be ready to go with this! If
you're busy though, I can certainly take over too :)

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#20013 (comment).

[seanmonstar]

I've been developing with --enable-local-rust, but just tried without it, and it seems the latest snapshot was just before #20080 landed: compare

[alexcrichton]

Ah, so close! Hopefully we'll have a new snapshot soon...