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

[Juri Linkov]

>> But in any case you can use `pre-command-hook' to store
>> the original buffer and window.
>
> Please the bug report.  It includes this:

A verb is missing.  I assume you meant: "Please close the bug report"?

>   Currently, to get this information a workaround
>   would be to use a `pre-command-hook' function
>   that sets variables, and then to test those variables.

Indeed, `pre-command-hook' could be used to set these variables,
and other possible variables.  There are much worse problems
while using window-configuration-change-hook.  When this hook is fired,
it doesn't provide the previous window-configuration as its argument,
thus requiring remembering the old window-configuration in `pre-command-hook'.
So every `pre-command-hook' calls `current-window-configuration'
that is huge performance overhead.  This is worse than remembering
a variable in `pre-command-hook', and still no one complains about this.