bug#23871: 25.1.50; Undo unexpectedly leads to blank buffer

[Markus Triska]

Eli Zaretskii <eliz@gnu.org> writes:

> This is now fixed on the master branch.  The situation where buffer
> changes happen in a window whose start point is on a continuation line
> was mishandled by code that never expected to find itself in this
> situation.  After the fix, the recipe leaves point at the end of line
> 15, in a window that displays that single line at its top.

Thank you very much for this great improvement! I really appreciate it!

I have run a few more test cases I had collected with similar issues,
and they all run much better now. In some cases, I would prefer if the
window displayed said line at its center (instead of at its top). That's
a very minor issue though and I am very glad with the current behaviour!

Thank you and all the best,
Markus