Regex Editor & Tester

Matches Flask/Jinja2 template expressions like `{ url_for('static', filename='style.css') }}` used to reference static assets, where `.*` greedily matches any filename. Commonly used when migrating Flask projects to Django, where these tags are replaced with Django's `{% static '...' %}` syntax. The gm flags allow finding all occurrences across every line in template files.