Regex Tester & Validator

This regex matches a multiline string literal enclosed in single quotes, double quotes, or backticks, allowing for escaped characters and line breaks. It captures the opening quote, then lazily matches any sequence of whitespace, backslash escapes (including multiple backslashes), or any other character, and finally requires the same closing quote. Useful for parsing source code, extracting embedded text, or sanitizing content that may contain quotes and escape sequences.