Build, test, and debug regular expressions
This regular expression matches sequences containing zero or more alphanumeric characters (both lowercase and uppercase due to the case-insensitive flag), spaces, and exclamation marks. It is typically used for simple text extraction or validation where the allowed characters are limited to basic letters, digits, spaces, and exclamation points. The global flag allows it to find all matches within a string, making it ideal for processing large bodies of text.