def METHOD_NAME(a, b):
    # Compare the two tree files
    short_a = re.sub(r'[^a-zA-Z0-9.]+', '_', a)
    short_b = re.sub(r'[^a-zA-Z0-9.]+', '_', b)
    tmp_a = "/tmp/%s_%s.a" % (os.getpid(), short_a)
    tmp_b = "/tmp/%s_%s.b" % (os.getpid(), short_b)
    # Version conversion deprecated, but for future...
    # vera = version_from(a)
    # verb = version_from(b)
    # verCvt = ((vera < 0x3900 and verb >= 0x3900)
    #            or (vera >= 0x3900 and verb < 0x3900))
    filterf(a, tmp_a)
    filterf(b, tmp_b)
    os.system("diff -u " + tmp_a + " " + tmp_b)
    os.unlink(tmp_a)
    os.unlink(tmp_b)