PR: Improve cursor position history (Editor)

[impact27]

Rework cursor position history

Description of Changes

• Wrote at least one-line docstrings (for any new functions)
• Added unit test(s) covering the changes (if testable)

• Included a screenshot or animation (if affecting the UI, see Licecap)

Current cursor history loops through the entire history at each cursor position change. This PR avoids that.

Issue(s) Resolved

Fixes #

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[ccordoba12]

Thanks a lot for all the improvements @impact27! I'm going to ask @steff456 to take a look at this one because she implemented this functionality.

[impact27]

I will update that to use cursors instead of positions - that way if a line above the cursor is modified, the right position will be retrieved

[ccordoba12]

@impact27, this PR has conflicts now.

[ccordoba12]

@impact27, you said in the description

Current cursor history loops through the entire history at each cursor position change. This PR avoids that.

Could you expand on this? Does this rework helps to improve performance?

[impact27]

looping through the entire history at each cursor move degrades performance over time when the history is long

[steff456]

I'm curious to know the time improvement taking into account these changes, because I'm seeing that you are creating more iterations over the list.

[steff456]

@ccordoba12 this is working as expected, I also tested it manually, I don't know if you have further comments. For me, this looks good to merge

[ccordoba12]

Thanks @impact27 for your work on this and @steff456 for the review!