Method: Xr#backref

Defined in:
lib/xr.rb

#backref(name) ⇒ Object 



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# File 'lib/xr.rb', line 71

def backref(name)
  case name
  in Integer then ->(pre) { Regexp.new("#{pre}\\#{name}") }
  in Symbol | String
    name = name.to_s
    valid_name?(name) or raise Error, "invalid group name"
    ->(pre) { Regexp.new("#{pre}\\k<#{name}>") }
  end
end