Jun 29, 2022, 00:07 by homeros.misasa@gmail.com:
I frequently split my windows, I usually kill the buffer using the
menu bar. But this leaves me with the window open with some other
buffer. Would like to request some facility to delete a window
(delete-window) using the mouse, as I frequently do for `kill-buffer'.
Perhaps the capability could be inserted in the window mode-line.
Where one can usually turn off a minor-mode with the mouse.

How about having `Close' in context menu?
I cannot understand this terminology.  How does one access the context menu?
What is it?

["Close"
(lambda () (interactive)
(if (one-window-p)
(if (> (length (visible-frame-list)) 1)
(call-interactively 'delete-frame)
(kill-buffer (window-buffer))) ; (quit-window)
(delete-window)))
:help "Remove this window or this frame, or kill this buffer"
:visible (not (region-active-p))
:active t]