Design meeting on declarative macro improvements

[joshtriplett]

Summary

I've proposed a series of improvements for macro_rules! macros, and intend to propose several more. I'd like to present the overall plan and how these and future RFCs fit into it.

Background reading

• RFC 3697: Declarative macro_rules! attribute macros
• RFC 3698: Declarative macro_rules! derive macros
• RFC 3714: Macro fragment fields
• RFC 3715: Unsafe derives and attributes

About this issue

This issue corresponds to a lang-team design meeting proposal. It corresponds to a possible topic of discussion that may be scheduled for deeper discussion during one of our design meetings.

[joshtriplett]

This design meeting took place today, all the feedback has been incorporated, and the consensus at the end of the meeting was to start FCPs. Closing this issue.