Improve regexp to match the reference mark &

Chris00 · Chris00 · commit a56e65c984fe · 2021-12-27T19:58:26.000+01:00
diff --git a/rust-mode.el b/rust-mode.el
@@ -467,7 +467,8 @@ Does not match type annotations of the form \"foo::<\"."
 
      ;; Question mark operator
      ("\\?" . 'rust-question-mark)
-     ("\\(&\\)'?\\<" 1 'rust-ampersand-face)
+     ("\\(&+\\)\\(?:'\\(?:\\<\\|_\\)\\|\\<\\|[[({:*_|]\\)"
+      1 'rust-ampersand-face)
      )
 
    ;; Ensure we highlight `Foo` in `struct Foo` as a type.

Original file line number	Diff line number	Diff line change
`@@ -467,7 +467,8 @@ Does not match type annotations of the form \"foo::<\"."`
`467`	`467`
`468`	`468`	`;; Question mark operator`
`469`	`469`	`("\\?" . 'rust-question-mark)`
`470`		`- ("\\(&\\)'?\\<" 1 'rust-ampersand-face)`
	`470`	`+ ("\\(&+\\)\\(?:'\\(?:\\<\\\|_\\)\\\|\\<\\\|[[({:*_\|]\\)"`
	`471`	`+ 1 'rust-ampersand-face)`
`471`	`472`	`)`
`472`	`473`
`473`	`474`	;; Ensure we highlight `Foo` in `struct Foo` as a type.