[Issue 8347] Please include smart undo functionality

[bu...@apache.org]

https://bz.apache.org/ooo/show_bug.cgi?id=8347

aliu26@asu.edu changed:

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                 CC|                            |aliu26@asu.edu

--- Comment #11 from aliu26@asu.edu ---
I replicated this bug in Apache Open Office version 4.1.2 on OS X 10.10.5,
where I try to type same sample sentence in both OOO document and Word
document. 

I found that in Open Office writer, Undo operation is done by each word, since
when we do Undo, Open Office Editor is checking each 'pauses' and each previous
operation we have done, even revising one single character in a word will be
recorded and reversed later. This is totally right since AOO is treating each
word and each action as history states and when we want to do an undo, the
editor just inverse every action and words we typed.

However, in Microsoft Word, words get undone by blocks, which may also include
'pauses'. It seems like Word editor has its own manner to store history states
and when we need to undo, the editor will do a computation to fetch the most
important history state and swap in that state, which make the Undo smarter and
more efficient.

Also, I have tried to increase or remove the limit on the number of undo steps
in AOO, but it seems like there is no effect on undo functionality. 

Aijia Liu

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