A question for sage old-timers/historians/paleontologists

[Emmanuel Charpentier]

Dear all,

9.2.beta8 introduced the use of IPython 7 in Sage, which broke the emacs interface sage-shell-mode ; I'm trying to fix it. 

This needs to account for three versions of IPython

• "Antique" Sage : readline interface to IPython <5
• "Modern" Sage, up to 9.2.beta7 : pseudo-terminal to IPython 5
• "Newer" Sage, i. e. 9.2.beta9 and later :  readline, start sage with the --simple-prompt option introduced in 9.2.beta9.

[ Note that 9.2.beta8 is a lost cause : it would need --simple-prompt, but doesn't support it... ]

This can be done at startup, but is slow. I'd like to offer the possibility to configure that in init.el ; in order to offer useful guidelines to the user, I need to know the precise limit between "Antique" and "Modern" Sage. Hence my question :

What was the first version of Sage using IPython 5 ?

Thanks in advance, 

[Dima Pasechnik]

git is your friend here, telling you that it happened in commit
d55cb7744b6500619664f136c18c4b2bb70c8b70

$ git log -p build/pkgs/ipython/package-version.txt
....
commit d55cb7744b6500619664f136c18c4b2bb70c8b70
Author: Volker Braun <vbrau...@gmail.com>
Date: Tue Jul 12 00:32:45 2016 +0200

Update IPython 5.0

diff --git a/build/pkgs/ipython/package-version.txt
b/build/pkgs/ipython/package-version.txt
index fae6e3d04b..0062ac9718 100644
--- a/build/pkgs/ipython/package-version.txt
+++ b/build/pkgs/ipython/package-version.txt
@@ -1 +1 @@
-4.2.1
+5.0.0

searching this commit on trac gives you https://trac.sagemath.org/ticket/21006

HTH
Dima

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[Emmanuel Charpentier]

Thank you Dima.

Do you happen to remember what was the firs Sage version including this ticket ?

[Emmanuel Charpentier]

That seems to be 7.3.beta8. But a confirmation would be welcome...

[Dima Pasechnik]

ticket milestone says 7.4

To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/f54d9d48-c4ef-4575-a6b6-6657c15f96c6n%40googlegroups.com.

[Samuel Lelievre]

Given the ticket number, search sage-release:

    https://groups.google.com/forum/#!searchin/sage-release/21006%7Csort:date

And we find it was merged in Sage 7.4.beta0

    0a80508 Updated SageMath version to 7.4.beta0

    ...

    9831d4b Trac #21006: Upgrade to IPython 5.0

    ...

    b630b41 Updated SageMath version to 7.3

Given the commit number, use

    $ git tag --contains <commit_number>

In this case:

    $ git tag --contains d55cb7744b

also shows 7.4.beta0 is the earliest tag containing that commit.

[Samuel Lelievre]

2020-08-25 08:20:57 UTC, Emmanuel Charpentier:

9.2.beta8 introduced the use of IPython 7 in Sage, which broke

the emacs interface sage-shell-mode ; I'm trying to fix it.

The "fix" link got messed up. Correct link:

    https://github.com/sagemath/sage-shell-mode/issues/53

[Emmanuel Charpentier]

Thank you, Dima ! Thank you Samuel. Both of you learned me something new today. And that's a Good Thing (TM)....

[Sébastien Labbé]

Since the passage to IPython 5.0 in version 7.4 of Sage, I am using the option

c.TerminalInteractiveShell.display_completions = 'readlinelike'

in the file profile_default/ipython_config.py. See my answer in the question https://ask.sagemath.org/question/35826.

Can this option be useful for the problems with emacs with Ipython 7?

Sébastien

[Emmanuel Charpentier]

FWIW, I just submitted a pull request against sage-shell-mode to fix this issue (by reverting to readline and using --simple-prompt).

A better solution (manage CPR requests in emacs) is out of my abilities...

HTH

[Emmanuel Charpentier]

I think that this is a different issue. As far as I understand it (i. e. not much...), IPython insists to "talk" to a cursor-adressable terminal ; as far as I know, this has not (yet) been implemented in emacs buffers.

in Sage-in-a-terminal (under Linux + gnome-terminal),  tab-completion works as expected and the four arrow keys can be used to select the "right" completion. In a Sage session (using my proposed fix to sage-shell-mode), auto-complete works as expected.

HTH,