**Describe the bug** Use variable with the characters `$` or `#` a in the name. Example: ```sql select :a$# from dual; ``` **Expected behavior** Pass **Actual behavior** `Parse error: Unexpected "$# from du" at line 1 column 12. SQL dialect used: "plsql".` **Usage** - How are you calling / using the library? [Playground](https://sql-formatter-org.github.io/sql-formatter/) - What SQL language(s) does this apply to? plsql - Which SQL Formatter version are you using? 15.4.9