DOCUMENTATION:
  name: regex_escape
  version_added: "2.8"
  short_description: escape regex chars
  description:
    - Escape special characters in a string for use in a regular expression.
  positional: _input, re_type
  notes:
    - posix_extended is not implemented yet
  options:
    _input:
      description: String to escape.
      type: str
      required: true
    re_type:
      description: Which type of escaping to use.
      type: str
      default: python
      choices: [python, posix_basic]

EXAMPLES: |

  # safe_for_regex => '\^f\.\*o\(\.\*\)\$'
  safe_for_regex: "{{ '^f.*o(.*)$' | regex_escape() }}"

RETURN:
  _value:
    description: Escaped string.
    type: str