I support adding options to the source menu,

But I do not agree with adding this to a toolbar.

But I do not agree with adding this to a toolbar.

Could you at least briefly explain your rationale for not wanting either on the toolbar? The other editors I use that have toolbars (Notepad++, Eclipse, MultiCommander), all have both as toolbar buttons by default (except for the show whitespace toolbar button in Eclipse, which is optional), whereas I hardly use any of the current Spyder toolbar buttons other than the working dir widget (e.g. PYTHONPATH manager? Dedicated button to switch to the Find pane?) regularly or ever, as opposed to either accessing the feature via keyboard hotkeys, menus or elsewhere in the UI, or not at all.

The editors that don't have toolbars usually allow you to bind it to a keyboard shortcut, which wouldn't be hard to add in Spyder as an alternative, but given we do have a toolbar it would IMO be best to follow the best practices of other such mainstream editors to make it more easily visible and toggleable for users without having to memorize two more non-standard shortcuts.

Could you at least briefly explain your rationale for not wanting either on the toolbar?

Toolbars should only expose important easy to access features not every single feature available. This feels like a secondary thing so it does not deserve in my opinion space on the toolbar, nor do we want to go the Microsoft way of "edit the toolbars as you want". So in the menu it makes sense to me, on the toolbar it does not.

I agree toolbars should focus on only the most commonly accessed features, and I don't think its worth the work and complexity of implementing custom toolbars unless users really ask for them. However, don't you think these are more commonly accessed features than the Python Path Manger and an extra button for the Find pane, which are currently on the toolbar? At least for me, I use them more than any of the existing toolbar buttons combined (aside from the working dir widget). But its not the end of the world, though, especially compared with at least having a toggle as common as word wrap in the Source menu and not buried several layers deep in preferences.

This could be added to the Source menu and not to a toolbar.