• replace scale with ttk.Spinbox
• if ttk.Spinbox not available (Tk < 8.5.9) use readonly ttk.Combobox (as both fully constrain available choices)
• note that test originally tried to set a value above the maximum range and relied on the scale adjusting it to the maximum; without adding extra validation code, neither the spinbox or the combobox will do this; given that neither allows arbitrary input, I adjusted the test to provide a value within range

• Issue: IDLE: use ttk.spinbox with configdialog #78143

See issue for initial review of widget in operation.

Test failure is patchcheck trailing whitespace failure.

TBH, I wouldn't bother checking for 8.5.9 as of all the distros/BSDs listed on pkgs.org, only CentOS 6 (which reaches EOL very soon) has <8.5.9 (8.5.7).

- replace scale with ttk.Spinbox
- if ttk.Spinbox not available (Tk < 8.5.9) use readonly ttk.Combobox (as both fully constrain available choices)
- note that test originally tried to set a value above the maximum range and relied on the scale adjusting it to the maximum; without adding extra validation code, neither the spinbox or the combobox will do this; given that neither allows arbitrary input, I adjusted the test to provide a value within range

Centos 6 and 7 seem to be the only ones without 8.6. NetBSD offers 8.5.19 as an option.

This PR is stale because it has been open for 30 days with no activity. Remove stale label or comment or this will be closed in 5 days

Centos 6 is no longer on the list at https://pkgs.org/download/tk. Centos 7 has 8.5.13. Centos 8 is 8.6.8. The Pipelines failure report is not available. I did an update merge, needed anyway, to force retesting.
EDIT: all pass now.

I put the spinbox on the new Windows tab and made it writeable by using a StringVar. I intend to merge it tomorrow.

Thanks @roseman for the PR, and @terryjreedy for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10, 3.9.
🐍🍒⛏🤖