From 3b9db47f07e2b609dc2acf45b0eaa7239ef76f49 Mon Sep 17 00:00:00 2001
From: Predrag Gruevski <2348618+obi1kenobi@users.noreply.github.com>
Date: Fri, 27 Sep 2024 14:34:48 -0400
Subject: [PATCH] rustdoc: update `ProcMacro` docs section on helper attributes

I believe the mention of attribute macros in the section on proc macro helper attributes is erroneous. As far as I can tell, attribute macros cannot define helper attributes.

The following attribute macro is not valid (fails to build), no matter how I try to define (or skip defining) the helpers:
```rust
#[proc_macro_attribute(attributes(helper))]
pub fn attribute_helpers(_attr: TokenStream, item: TokenStream) -> TokenStream {
    item
}
```

The [language reference](https://doc.rust-lang.org/reference/procedural-macros.html#attribute-macros) also doesn't seem to mention attribute macro helpers. The helpers subsection is inside the section on derive macros.
---
 src/rustdoc-json-types/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rustdoc-json-types/lib.rs b/src/rustdoc-json-types/lib.rs
index ef21779b09931..b3707cf615714 100644
--- a/src/rustdoc-json-types/lib.rs
+++ b/src/rustdoc-json-types/lib.rs
@@ -1168,7 +1168,7 @@ pub struct ProcMacro {
     pub kind: MacroKind,
     /// Helper attributes defined by a macro to be used inside it.
     ///
-    /// Defined only for attribute & derive macros.
+    /// Defined only for derive macros.
     ///
     /// E.g. the [`Default`] derive macro defines a `#[default]` helper attribute so that one can
     /// do: