bug#52023: [External] : Re: bug#52023: 27.2; Enhancement: `this-command-invocation-(buffer|window)'

[Juri Linkov]

>> Maybe these functions give what you need?
>>
>>   (old-selected-window)
>>   (window-buffer (old-selected-window))
>...
> As for the second sexp you show: the buffer
> that's current when a command is invoked
> need not be displayed in any window.

It seems there is no such thing as `old-current-buffer'
like there is `current-minibuffer-command'.

> As for the first (function `old-*'), the
> doc says ~ it's the window selected at the
> time of (before? after?) the last window
> change.
>
> It's not clear to me whether that's the
> `selected-window' when this-command was
> invoked.  Is it? always?

I don't know what `old-selected-window' returns when
more window changes were performed by the same command.
But in any case you can use `pre-command-hook' to store
the original buffer and window.