parameters: (self, o)
docstring: Concatenate the other expansion on to this one.
docstring_summary: Concatenate the other expansion on to this one.
docstring_tokens: Concatenate the other expansion on to this one .
function: def concat(self, o):
          """Concatenate the other expansion on to this one."""
          if o.simple:
              self.appendstr(o.s)
          else:
              self.extend(o)
function_tokens: def concat ( self , o ) : if o . simple : self . appendstr ( o . s ) else : self . extend ( o )