bug#45688: 28.0.50; New action for display-buffer?

[Juri Linkov]

>> Indeed, better would be to add an option to not resize it by 
>> describe-function.
>> Maybe by adding a new option 'after-display-buffer-function' and set it
>> by default to 'shrink-window-if-larger-than-buffer' in *Help* buffers?
>
> You can already use a 'window-height' alist entry and set it to
> 'shrink-window-if-larger-than-buffer'.  What would an
> 'after-display-buffer-function' option do differently?

The problem is that currently shrink-window-if-larger-than-buffer
is used in many commands by default, but this behavior is hard-coded
and can't be disabled by customization.  These commands include
help commands,  vc-log, vc-diff, ...