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bug#25753: 25.2; Python mode shell interaction not working 100%

From: npostavs
Subject: bug#25753: 25.2; Python mode shell interaction not working 100%
Date: Sun, 26 Feb 2017 21:14:45 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

address@hidden (Charles A. Roelli) writes:

> On Sat, Feb 25 2017 at 09:34:10 am, address@hidden wrote:
>> Possibly setting `comint-process-echoes' could help, though I don't
>> understand why there is echoing in the first place.
> Thanks for the pointer to that variable.  I ran this:
>    (add-hook 'inferior-python-mode-hook (lambda () (setq 
> comint-process-echoes t)))
> and the commands at the prompt stopped echoing, but the support
> functions still echoed.  So it looks like the problem has to be fixed on
> the readline/libedit side of Python.

This thread[1] might be somewhat relevant:

    The problem is that eshell tells subprocesses that they're running in
    a terminal (e.g., when queried via hIsTerminalDevice), but always
    echos user input itself regardless of the tty's ECHO attribute. This
    confuses libedit, which assumes that if it's connected to a terminal
    then it can turn off echoing in order to run its own rich line editor.


>  So it would seem that `sudo easy_install
> gnureadline' is the right thing to run.  However that still does not fix
> the issue because python2.7/lib-dynload/ comes before
> python2.7/site-packages/ (where `gnureadline' is installed) in Python's
> $PATH equivalent, `sys.path'.  The solution, then, is to reorder the
> path somehow or get `readline.so' out of the way (maybe by renaming it
> -- cleaner suggestions welcome).

I guess renaming should have the least amount of side-effects.

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