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bug#21242: 24.5.1; python.el: should display output buffer on exceptions


From: Andreas Röhler
Subject: bug#21242: 24.5.1; python.el: should display output buffer on exceptions when using python-shell-send-region
Date: Thu, 13 Aug 2015 08:48:41 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.4.0


Am 12.08.2015 um 16:05 schrieb Yuri D'Elia:
When evaluating the code interactively, there's currently no
notification about evaluation errors. Exceptions in the output buffer go
simply unnoticed, unless you watch for them closely. I like to keep the
output buffer buried, and assume that no-notification==no-error.

Exceptions caused by interactive evaluation should either:

- show a notification of sorts in the minibuffer
- display the output buffer for inspection

For inspiration about the second, see:

https://github.com/wavexx/python-x.el/blob/master/python-x.el#L424

Given previous experience with python-mode.el (which tends to break the
current window layout with his own splitting logic), I find it important
that the notification function (which displays the output buffer) should
be customizable, and this is reflected in the example code.

WRT python-mode.el:

Splitting-behavior _is_ customizable. It only occurs if py-split-window-on-execute is non-nil - default is 'just-two. Also there is py-keep-windows-configuration, when non-nil it precedes other settings.





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