Build, test, and debug regular expressions
Matches a literal equals sign followed by all characters up to the end of the line. With the multiline flag, this applies to every line in the text rather than just the first, making it ideal for batch edits in editors like VS Code or Sublime Text. Commonly used to select values in key=value pairs such as config files, .env files, or INI settings. The backslash before = is unnecessary but harmless, since = has no special regex meaning.