Occasionally, Qtconse stops responding to some keystrokes about qtconsole

[wmvanvliet]

See #145

[jrovegno]

I open (File > New Tab with Same Kernel) after the problem occurred.
Then I close the hanged tab and I work in the new tab.

[takluyver]

Is there any message in the terminal where you started the qtconsole? Try running with --debug.

There's a problem that comes up occasionally where you get an error message in the terminal saying something like 'cursor position out of bounds'. I think some progress was made with that, but it seems there are still some bugs lurking.

[taerath]

On 01/30/2016 10:30 AM, Thomas Kluyver wrote:

Is there any message in the terminal where you started the qtconsole?
Try running with |--debug|.

There's a problem that comes up occasionally where you get an error
message in the terminal saying something like 'cursor position out of
bounds'. I think some progress was made with that, but it seems there
are still some bugs lurking.

Yeah, I get lot's of exactly these messages on the terminal:

QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range
QTextCursor::setPosition: Position '31539' out of range

Best,
-Nikolaus

[thertz]

Hi,

I am also getting similar messages to the ones reported above. I have found that on mac running El-Capitan (but also true on previous versions) if I run jupyter-qtconsole 4.1.1 (installed by anaconda) from the shell, certain keystrokes (which I have not tracked down) cause the qtconsole to hang and I get messages of the following format to appear in the shell:

QTextCursor::setPosition: Position '22702' out of range
QTextCursor::setPosition: Position '22702' out of range

The only solution I have found is to quite the ipython shell and start again. It seems to me that this is happening more than it did in previous versions of the qtconsole.

I have googled and found no information regarding this bug, or how to resolve it.

Best,
--Tomer

[dashesy]

This issue here can be reproduced with latest Jupyter. Use QTextCursorError.py from that issue along with the png file and rename the png to BurrIndx.png

Jupyter QtConsole 4.3.0.dev
IPython 4.1.1 
Python 2.7.10 

P.S. I get tons of QTextCursor::setPosition: Position '29659' out of range errors on the terminal (not QtConsole) now but have not seen the input hang, so it is not anything more than small annoyance. If I can reproduce hanging that would be great.