On Jan 27, 2008, at 08:28 , Jaap Spies wrote:
>
> Jaap Spies wrote:
>> William Stein wrote:
>
>
> In
> aString = self.eval('cputime(%s)'%t)
> IDENTITY_MAP = ''.join([chr(x) for x in range(256)])
> BAD_MAP = ''.join([chr(x) for x in range(32) + [124]])
> aNewString = aString.translate(IDENTITY_MAP, BAD_MAP)
> return float(aNewString)
>
> only the control characters are filtered out.
>
> What can be the meaning of escape followed by a string like "[0;31m
> [0m"
> (also see below)? And where is it coming from?
>
>>> I wonder if the notebook works kind of funky for you on that
>>> same computer? I mean, if there are funny control codes everywhere
>>> in sage0, then that would impact the notebook as well, possibly.
>>>
>>
>> This test first failed in sage-2.10.1.alpha1. As did the notebook()
>> with gnutls related problems.
>> I removed the alpha0, but on sage-2.10, I got
>> sage -t devel/sage-main/sage/interfaces/sage0.py ^[[?1034h
>> [23.4 s]
>>
>> ------------------------------------------------
>> Note the strange characters, or are they intentionally there?
>>
>
> In test.log I see them all the time:
>
> sage -t devel/sage-main/sage/monoids/
> free_abelian_monoid_element.py^[[?1034h
> [1.6 s]
> sage -t devel/sage-main/sage/monoids/string_ops.py ^[[?1034h
> [1.5 s]
> sage -t devel/sage-main/sage/monoids/free_monoid.py ^[[?1034h
> [1.6 s]
> sage -t devel/sage-main/sage/monoids/monoid.py ^[[?1034h
> [1.5 s]
> sage -t devel/sage-main/sage/monoids/string_monoid.py ^[[?1034h
FWIW, these look like "escape codes" for screen control, a la curses
(3). Are you viewing at the log file through 'tail' or something
similar?
The sequence "ESC[" (or "^[[") is the Control Sequence Indicator/
Introducer. There's a pretty accessible description of this stuff at
<http://en.wikipedia.org/wiki/ANSI_escape_code>
Justin
--
Justin C. Walker, Curmudgeon-at-Large
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