Tracking issue for feature `extern_in_paths`

[petrochenkov]

Allows using extern in paths to unambiguously refer to items in extern crates - extern::my_crate::foo.

This feature is superseded by absolute paths ::my_crate::foo on 2018 edition, and has little value on 2015 edition where extern crate items are supposed to be used instead.
As a result, the feature is supposed to be removed once 2018 edition ships.

[Centril]

@rfcbot close

Per @petrochenkov's notes above I propose that we remove extern:: once the 2018 edition has shipped.

[rfcbot]

Team member @Centril has proposed to close this. The next step is review by the rest of the tagged teams:

• @Centril
• @aturon
• @cramertj
• @eddyb
• @joshtriplett
• @nikomatsakis
• @nrc
• @pnkfelix
• @scottmcm
• @withoutboats

No concerns currently listed.

Once a majority of reviewers approve (and none object), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

[rfcbot]

🔔 This is now entering its final comment period, as per the review above. 🔔

[rfcbot]

The final comment period, with a disposition to close, as per the review above, is now complete.

[Centril]

@petrochenkov Now that FCP is complete, could you either 1) write up mentoring instructions, 2) fix it up yourself? :)