Brummel
9c5506b83e
This commit introduces support for unhygienic macro expansion using the `~ident` syntax. When an identifier is prefixed with a tilde (`~`) within a macro template, it is no longer subject to hygienic renaming. Instead, it directly refers to a binding in the call site's environment. This allows macros to interact with variables defined outside the macro's scope, such as: - Modifying call-site variables. - Capturing call-site variables as upvalues in closures. - Defining new variables that are visible in the call site. A new test case `test_macro_tilde_nonparam_assign` has been added to verify this functionality. Previously, unhygienic escapes were implicitly handled by `SyntaxKind::Identifier` if they were not macro parameters. This change makes this behavior explicit and correctly handles non-parameter identifiers by returning a bare symbol.