Wrong error message from 2u

In
  (23:29) gp > my([a,b,c]=[(u-v)^2,2u*v,(u+v)^2]); c^2-a^2-b^2
    ***   syntax error, unexpected variable name, expecting ',': ...,c]=[(u-v)^2,2u*v,(u+v)^2]);c^2-a^2-b^2
    ***                                                                                      ^--------------

the arrow points at the second closing bracket.  The actual problem is
2u.

Thanks,
Ilya

  P.S.  IMO, 2u should better be parsed (as expected by the user!).