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concat_idents cannot be used in pattern position #50408

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ExpHP opened this issue May 3, 2018 · 0 comments
Open

concat_idents cannot be used in pattern position #50408

ExpHP opened this issue May 3, 2018 · 0 comments
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A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-patterns Relating to patterns and pattern matching C-feature-request Category: A feature request, i.e: not implemented / a PR. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@ExpHP
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ExpHP commented May 3, 2018

  • The three places where an ident-returning macro can be used are patterns, types, and expressions.
  • The two places where concat_idents can be used are types and expressions.
  • Hmmmm.

I looked around previous issues and PRs related to concat_idents and the word "pattern" never even comes up. This seems to be an accidental omission.
@cuviper cuviper added A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-feature-request Category: A feature request, i.e: not implemented / a PR. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels May 4, 2018
@c410-f3r c410-f3r mentioned this issue May 25, 2023
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@fmease fmease added the A-patterns Relating to patterns and pattern matching label Aug 29, 2024
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A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-patterns Relating to patterns and pattern matching C-feature-request Category: A feature request, i.e: not implemented / a PR. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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