bug#54905: Allow in tabulated lists to resize columns with the mouse

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> What's wrong with drag-mouse-1 etc.?  Or am I misunderstanding the
> question?

No, that was exactly what I was looking for.  :-/  I was getting some
weird results when I tried using it, so I assumed that it didn't quite
work, but I tried it again now, and it seems to work fine.  I may have
been getting confused by the binding(s) that already exists in
header-line -- there's a bunch of different bindings for down (etc.)
there...

Yes, this doesn't seem to work:

(keymap-local-set "<header-line> <drag-mouse-1>" #'foo)
(defun foo (e)
  (interactive "e")
  (message "Hello %S %S"
           (posn-x-y (event-start e)) (posn-x-y (event-end e))))

Dragging something in the header line does not call this function.

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