Ty in macro followed by >>

sanxiyn · November 14, 2015, 12:08pm

RFC 550 (Macro future-proofing) allows ty followed by >, but do not allow >>. This causes Option<Box<$t:ty>> to err, for example.

This seems worth fixing. Do we want to also allow >= and >>=? I am not sure about them.

system · March 25, 2019, 8:25am

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
Issue with ty in macro rules language design	2	589	May 6, 2019
On macros future-proofing, FOLLOW sets, and related stuff language design	33	5343	March 25, 2019
Triage for two T-lang issues language design	4	1370	March 25, 2019
Pre-RFC: allow macros become `println{...}` rather than `println!(...)` language design	24	1715	March 21, 2023
Feature Idea: Add a macro to "de-magic" box syntax language design	9	1155	April 10, 2021