Fix the Attr grammar for unsafe attributes.

ehuss · ehuss · commit 28005ff4536e · 2024-07-24T17:16:15.000-07:00
The _Attr_ production is used for `cfg_attr` attribute and the `meta`
macro fragment specifier, and those need to accept the new `unsafe`
syntax.
diff --git a/src/attributes.md b/src/attributes.md
@@ -3,15 +3,14 @@
 
 > **<sup>Syntax</sup>**\
 > _InnerAttribute_ :\
-> &nbsp;&nbsp; &nbsp;&nbsp; `#` `!` `[` _Attr_ `]`\
-> &nbsp;&nbsp; | `#` `!` `[` `unsafe` `(` _Attr_ `)` `]`
+> &nbsp;&nbsp; `#` `!` `[` _Attr_ `]`
 >
 > _OuterAttribute_ :\
-> &nbsp;&nbsp; &nbsp;&nbsp; `#` `[` _Attr_ `]`\
-> &nbsp;&nbsp; | `#` `[` `unsafe` `(` _Attr_ `)` `]`
+> &nbsp;&nbsp; `#` `[` _Attr_ `]`
 >
 > _Attr_ :\
-> &nbsp;&nbsp; [_SimplePath_] _AttrInput_<sup>?</sup>
+> &nbsp;&nbsp; &nbsp;&nbsp; [_SimplePath_] _AttrInput_<sup>?</sup>\
+> &nbsp;&nbsp; | `unsafe` `(` [_SimplePath_] _AttrInput_<sup>?</sup> `)`
 >
 > _AttrInput_ :\
 > &nbsp;&nbsp; &nbsp;&nbsp; [_DelimTokenTree_]\

Original file line number	Diff line number	Diff line change
`@@ -3,15 +3,14 @@`
`3`	`3`
`4`	`4`	`> <sup>Syntax</sup>\`
`5`	`5`	`> _InnerAttribute_ :\`
`6`		->       `#` `!` `[` _Attr_ `]`\
`7`		->    \| `#` `!` `[` `unsafe` `(` _Attr_ `)` `]`
	`6`	+>    `#` `!` `[` _Attr_ `]`
`8`	`7`	`>`
`9`	`8`	`> _OuterAttribute_ :\`
`10`		->       `#` `[` _Attr_ `]`\
`11`		->    \| `#` `[` `unsafe` `(` _Attr_ `)` `]`
	`9`	+>    `#` `[` _Attr_ `]`
`12`	`10`	`>`
`13`	`11`	`> _Attr_ :\`
`14`		`->    [_SimplePath_] _AttrInput_<sup>?</sup>`
	`12`	`+>       [_SimplePath_] _AttrInput_<sup>?</sup>\`
	`13`	+>    \| `unsafe` `(` [_SimplePath_] _AttrInput_<sup>?</sup> `)`
`15`	`14`	`>`
`16`	`15`	`> _AttrInput_ :\`
`17`	`16`	`>       [_DelimTokenTree_]\`