Best UX possible for adjusting terminal pane borders

[unphased]

So i've been using tiling panes for terminals forever mostly because of tmux but i realized something (from i3wm, the Super+right click drag) is probably the best possible way to reshape split panes in an interface.

it's to take a gesture that is otherwise never being used (middle click drag) and do the following:

When starting a middle click drag anywhere on the window, find the nearest grabbable edge, and treat it as if we grabbed that edge.

Then the drag operation proceeds as normal

The reasoning here:

• left click drag is used inside terminal apps proper
• right click drag opens a dialog and if you release within the dialog it will trigger that dialog option. so right click drag is also verboten
• middle click is paste

middle click drag does not do anything. so i propose middle click drag to be a magnetic pane resize. magnetic is much easier to use because you don't have to carefully put the mouse exactly on a border to begin resizing it, so it can be used effectively much more quickly.

it does need to change middle click to paste on mouseup instead of on mousedown though.

[rhodes-b]

I think this would definitely be possible reading the docs for the widget used on linux https://docs.gtk.org/gtk4/class.Paned.html
the issue is so far ghostty doesn't do any special handling currently it lets the widget handle all the mouse events itself just listening for callbacks on when it gets resized.

I can't speak on the macos side at all if its easy or difficult