class Guard::Watcher

def initialize(pattern, action = nil)

Parameters:
  • action (Block) -- the action to execute before passing the result to
  • pattern (String, Regexp) -- the pattern to be watched by the Guard 
def initialize(pattern, action = nil)
  @pattern, @action = pattern, action
  @@warning_printed ||= false
  # deprecation warning
  regexp = /(^(\^))|(>?(\\\.)|(\.\*))|(\(.*\))|(\[.*\])|(\$$)/
  return unless @pattern.is_a?(String) && @pattern =~ regexp
  unless @@warning_printed
    UI.info "*" * 20 + "\nDEPRECATION WARNING!\n" + "*" * 20
    UI.info <<-MSG
        You have a string in your Guardfile watch patterns that seem to
        represent a Regexp.
        Guard matches String with == and Regexp with Regexp#match.
        You should either use plain String (without Regexp special
        characters) or real Regexp.
    MSG
    @@warning_printed = true
  end
  new_regexp = Regexp.new(@pattern).inspect
  UI.info "\"#{@pattern}\" has been converted to #{ new_regexp }\n"
  @pattern = Regexp.new(@pattern)
end