Fold the nearest node in the line

[isamert]

Assume I have the following line and my cursor is at the beginning of the line.

Calling ts-fold-open does not open the fold, I have to move my cursor to the folding overlay to be able to open that. I am really accustomed to this flow from other folding modes, so it would be nice to have this kind of feature. I am currently using AndrewSwerlick's treesit.el fork1, let me know if this works on the original case but not in the fork. Currently I have no way of confirming this but assumed that the behavior is the same in upstream.

To fix this, I added the following function:

(defun ts-fold--first-foldable-node-at-line ()
  "Find the first foldable node in current line, after the current point."
  (catch 'return
    (dolist (pt (number-sequence (point) (cdr (bounds-of-thing-at-point 'line))))
      (when-let (fold (ts-fold--foldable-node-at-pos pt))
        (throw 'return fold)))))

and replaced all ts-fold--foldable-node-at-pos calls with this function. Probably a sub-optimal solution but it works for me.

[jcs090218]

I'm using vs-edit-mode to deal with this issue, https://github.com/emacs-vs/vs-edit-mode/blob/7891dd1d39dea7c0059f158497930be1fc0da1c6/vs-edit-mode.el#L346-L376.

I don't have a strong opinion and don't know what provides the best UX. Therefore, I didn't choose to improve it until I knew what to do. 🤔

[isamert]

I see, I believe it makes more sense to have this behavior in ts-fold. I tried hs-minor-mode and origami-mode. They both work like I described above. Also outline-mode (and thus org-mode, markdown-mode) works in the same way. I think it is more natural, most of the time (maybe 95% of the time), one line will have only one fold and it does not make sense to force the user to be precise.

[mpereira]

Also coming from hs-minor-mode and origami-mode (and similar Vim plugins in the past) it makes sense (ergonomically) that folding operations happen at a fold in the same line as the cursor.

[jcs090218]

Thanks for showing interest in this feature!

Please give the first post upvote 👍, so I know how many people are interested in this feature. 🤔

[mpereira]

Upvoted. Thank you for your work on this package (and others) 🙂