mcedit: undo warning

[Yury V. Zaytsev]

On Sun, 10 Sep 2017, Dmitry L. wrote:

> It looks like a bug for me. In mcedit I have next warning when remove 
> block of text (when length is large than 16384): "Block is large, you 
> may not be able to undo this action"
>
> But actually I can undo only when remove block of text with length less 
> than 8190.
>
> So, when I remove block of text where 8190 <= length <=16384 I don't get 
> any warning and can't undo this action.

That's correct, the condition in question is

     (end_mark - start_mark) > option_max_undo / 2

where

     int option_max_undo = 32768

It looks like it should be option_max_undo / 4, according to your 
observation, but I have no idea why and how come...

In any case, please report this bug on the Trac, because otherwise this 
will get lost on the list.

-- 
Sincerely yours,
Yury V. Zaytsev