fix: allow double -- in permissions as command can have double __ (#12884)

* allow double `--` in permissions as command can have double `__`

* Create change-pr-12884.md

* Update .changes/change-pr-12884.md

Co-authored-by: Fabian-Lars <[email protected]>

---------

Co-authored-by: Fabian-Lars <[email protected]>

Author: oscartbeaumont

.changes/change-pr-12884.md

@@ -0,0 +1,5 @@
+---
+"tauri-utils": "patch:bug"
+---
+
+fix: allow double `--` in permissions as command can have double `__`

crates/tauri-utils/src/acl/identifier.rs

@@ -104,7 +104,8 @@ impl ValidByte {
 
       (_, IDENTIFIER_SEPARATOR) => Some(ValidByte::Separator),
       (ValidByte::Separator, next) => ValidByte::alpha_numeric(next),
-      (ValidByte::Byte(b'-'), next) => ValidByte::alpha_numeric(next),
+      (ValidByte::Byte(b'-'), next) => ValidByte::alpha_numeric_hyphen(next),
+      (ValidByte::Byte(b'_'), next) => ValidByte::alpha_numeric_hyphen(next),
       (ValidByte::Byte(_), next) => ValidByte::alpha_numeric_hyphen(next),
     }
   }