sympy/sympy — pull request #714 by goodok (2011-11-14 01:57:58+00:00)
Title: Correct missprint in the XFAIL test.

Replace `0` by `x` in the `sympy/core/tests/test_functions.py`:

was:
`assert Subs(f(x), x**2, 0).doit() == f(sqrt(x))`

became:
`assert Subs(f(x), x**2, x).doit() == f(sqrt(x))`