> On Nov 7, 2017, at 11:27 AM, Terry Reedy <tjre...@udel.edu> wrote:
> 
> On 11/7/2017 6:31 AM, Kevin Walzer wrote:
>> On 11/6/17 11:54 PM, Irv Kalb wrote:
>>> Hi,
>>> 
>>> I have installed  the 8.5.18 version of tk/tcl that you suggested.  But I 
>>> am still seeing this problem on my Mac.
>>> 
>>> Rather than trying to explain the details and my configuration, I have made 
>>> a 3 minute video so you can see exactly what I am seeing.  You can find 
>>> that here:
>>> 
>>> https://youtu.be/Us8px0BY5rg
> 
> Crystal clear.
> 
>>> 
>>> In answer to your question, I would guess that I am the same IrvKalb that 
>>> is registered, but it would take me hours to figure out how to register a 
>>> bug (since I have never done it before).  So if you believe that this is a 
>>> real bug, I would greatly appreciate it if you could register it for me.
>>> 
>>> Again, please let me know if there is any more information I can give you.
>>> 
>>> (I forgot to test this out on my Windows computer at my school today - I'll 
>>> try to remember to do it tomorrow.  I remember seeing this last semester on 
>>> the Windows system, but we were running Python 2 back then.)
>>> 
>>> Irv
>>> 
>> FWIW, I don't see this issue with IDLE built against Python 3.6.1 and Tcl/Tk 
>> 8.6.7. 8.5.18 is a very old release of Tk and we are not backporting 
>> bugfixes to it. You may solve your problem by upgrading your installation of 
>> Tk.
> 
> I don't know why the PSF Mac Python is still compiled against 8.5 instead of 
> 8.6.  I will open a tkinter issue, even though it will likely be closed as 
> 3rd party, both to document the problem and as more evidence of the need to 
> change to compiling against 8.6.
> 
> PS: About a year ago, someone (you?) said we might see a tk that supports the 
> unicode beyond the BMP in 2017.  Is there any development in that direction.  
> I think that this is the tk improvement that IDLE most needs.
> 
> 

Thank you Kevin and Terry for looking at this.  But now I'm very confused about 
what to do.  

Terry said that I should install Tcl/TK 8.5.18, which I did, but I still see 
the error.  He said that the current version of IDLE will not work with 8.6.

However, Kevin said that 8.5.18 is a very old release, and I may solve my 
problem by upgrading my installation of Tk.

So, should I attempt to install a newer version of Tk (8.6.?) - or am I just 
stuck with this odd insertion cursor behavior for now?   (I am using an 
absolutely vanilla download of Mac Python 3.6 from Python.org 
<http://python.org/>)

Irv

PS:  By the way, I did test out the same thing on my Windows 10 system at my 
school, and the issue does not happen there.  I realized that last semester, 
this same classroom had a Mac, and I saw this problem there (with Python 2.7).  

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