On 12/11/12 8:07 AM, Jim Hefferon wrote:
On Tuesday, December 11, 2012 7:45:10 AM UTC-5, Dima Pasechnik wrote:
is pyreadline really used by Sage?
It seems to be only needed on Windows, where Sage does not run.
Thanks for your comment. Probably I have it wrong. I based my opinion
on this from the Sage FAQ:
http://wiki.sagemath.org/faq#Why_is_Sage.27s_command_history_different_than_Magma.27s
buttressed by the fact that if you type garbage into the repl then Sage
gives an error message that refers to the "ipython console". But
evidence that I am wrong is that I also see readline-6.2.p3.spkg in my
/usr/local/sage/spkg/standard directory, so I could be convinced either
way.
Assuming that Sage uses GNU readline, I spelunked the readline manual
looking for a way to disable either dynamically or at startup and did
not see anything. I also have spent some time trying to influence the
behavior of readline via INPUTRC, as here
bash$ INPUTRC=./inputrc sage
but I observed no effect (in ./inputrc I tried setting
horizontal-scroll-mode=off). Could easily be my cluelessness that
caused it to not work, though.
Obviously I'm thrashing here, so I'm glad for any insight.
Sage has an expect interface for Sage:
http://hg.sagemath.org/sage-main/file/33242a07d2ab/sage/interfaces/sage0.py
There's another expect interface used in the notebook:
https://github.com/sagemath/sagenb/blob/master/sagenb/interfaces/expect.py#L204
I'm not sure the exact answer to your original question about disabling
readline, but I hope the above helps.
Thanks,
Jason
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