[with patch, with positive review] fix problems with ANSI codes in sage0.py

[craigcitro]

There were some annoying doctest failures in sage0.py in 2.10.1.rc1, which are due to weird issues with ANSI codes ending up in the result of eval(). This parses them to get the correct answer.

I think there's possibly a deeper readline issue here, but that's mostly wild speculation.

[mabshoff]

There is some more info on #1942, which now has been closed as a dupe of this ticket.

Cheers,

Michael

[craigcitro]

Attached a better band-aid for this, at wstein's suggestion.

[craigcitro]

Note: you only want the second patch; it's a *replacement* for the first, not in addition to.

[jsp]

Worked for me on Fedoa 7:

sage -t  devel/sage-main/sage/interfaces/sage0.py           ^[[?1034h
         [7.1 s]

----------------------------------------------------------------------
All tests passed!
Total time for all tests: 7.1 seconds

How about the extra escape code on each test line?

[mabshoff]

Merged 1958-bandaid-v2.patch in Sage 2.10.1.rc3