bug#59141: 28.1.90; Face :extend when all the line but trailing \n is invisible

[Juri Linkov]

>>> What about simply changing the buffer-invisibility-spec?
>>
>> I'm not following: how is that question related to what
>> selective-display-ellipses does (or does not do)?
>
> It is related to "ellipsis glyph to be disabled" (parent message in the
> thread).
>
> If a text is hidden using invisible property, the appearance of such
> text can be controlled by `buffer-invisibility-spec'. One can display
> default ellipsis or custom ellipsis or disable ellipsis completely.

You are right, the ellipsis could be disabled by `buffer-invisibility-spec'
when buttons are used to indicate the hidden outlines.