DOCUMENTATION:
  name: regex
  author: Ansible Core
  short_description: Does string match regular expression from the start
  description:
    - Compare string against regular expression using Python's match or search functions.
  options:
    _input:
      description: String to match.
      type: string
      required: True
    pattern:
      description: Regex to match against.
      type: string
      required: True
    ignorecase:
      description: Use case insenstive matching.
      type: boolean
      default: False
    multiline:
      description: Match against multiple lines in string.
      type: boolean
      default: False
    match_type:
      description: Decide which function to be used to do the matching.
      type: string
      choices: [match, search]
      default: search

EXAMPLES: |
  url: "https://example.com/users/foo/resources/bar"
  foundmatch: url is regex("example\.com/\w+/foo")

RETURN:
  _value:
    description: Returns C(True) if there is a match, C(False) otherwise.
    type: boolean