New submission from Terry J. Reedy <tjre...@udel.edu>:

Spinoff from #31414, about int entry fields.  It claims: Note: a deeper problem 
is attaching a tracer that get called with each keystroke.  Using a StringVar 
avoids the error when the entry is blanked, but currently allows non-ints to be 
saved.  A better solution would be to not do the auto tracing, but use a IntVar 
and only call var_changed when the user 'leaves' the box, after checking for a 
count in a sane range.

Verify claim and proposed solution.

----------
assignee: terry.reedy
components: IDLE
messages: 360821
nosy: terry.reedy
priority: normal
severity: normal
stage: test needed
status: open
title: IDLE: improve handling of int entry in settings dialog
type: behavior
versions: Python 3.9

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39472>
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