text-undo-misbehavior - There are some odd thigns about text undo.

[todor]

• Undo of backspace is not behaving as expected.
• No matter how fast you write when you undo the first letter stays most of the times.
• Undo of writing removes random number words (sometimes undo removes letters sometimes several words).
• Select text and delete it, try to undo it.
• Redo doesn't work sometimes, often.
• Undo of styles doesn't work.
• The right behavior is the one used by word and many other text editors.
• When user presses on Ctrl+Z the whole word must be removed, if the user however makes changes to some word Ctrl+Z removes only the new changes (see ms word).