Use this operation to escape literal text before inserting it into a regular-expression pattern for the intended regex engine.

Pattern

Text to escape.

Escape regular-expression metacharacters so arbitrary text can be embedded safely in a RegExp. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Escaped

Text with every RegExp metacharacter backslash-escaped.

• Escaping rules differ among regex flavors and contexts such as character classes, replacement strings, delimiters, flags, and Unicode modes. Escaping a literal does not prevent denial-of-service from the surrounding pattern.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Use the target engine's documented literal-escape facility, anchor and bound patterns deliberately, and test adversarial input and runtime.

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