Despite being large, the PR is mostly trivial changes (e.g. changing indentation). The main changes worth noting (and hence the reason for this issue) are:
1) the renaming of `ResetColorizer` to `reset_colors`, `ResetFont` to `reset_font`, `RemoveKeybindings` to `remove_keybindings` and `ApplyKeybindings` to `apply_keybindings`.
2) removal of some potentially unneeded imports
3) renaming of the `tokeneater` args to be lowercase

I chose `reset_colors` (as proposed in PR-22682) rather than `reset_colorizer` because we are reconfiguring the Text, code context and line numbers, rather than only dealing with the colouriser.

Hello and thanks for wanting to contribute to Python!

In the CPython project, stylistic changes are not made by themselves as a matter of course (accross the whole codebase or in a specific module): among reasons, these obfuscate file history, need reviewer time that takes away from other changes, and can introduce subtle bugs.  Or in short: if it’s not broken, don’t fix it!

This is different from other projects, especially those that have a smaller codebase, much less history than Python, and can agree on using some automated tool for trivial formatting changes.

So if the changes here are not motivated by a bugfix or a new features, I think they should not be accepted.

This started as an extraction and revision of changes in Tal's PR, one of which appeared to be an intended behavior change, that I requested there.  Paine may have expanded the scope more than I intended.  Will look soon.

I agree with your points and understand that there is good reason for the PR to be rejected. If Terry decides it's too big (I did do a lot more than what was originally in PR-22682), I am more than happy to close this issue.