A shortcut key of a "redo" action is now Ctrl+Y in all Microsoft Office products. However, a lot of other programs like Matlab, Adobe Illustrator, and even old versions of Microsoft Office had "redo" action shortcut key as Ctrl+Shift+Z.
That makes me confuse and I keep press Ctrl+Shift+Z for "redo." But the bigger problem is that this action (whatever it is) deletes all traces of my actions! From that point, if I press Ctrl+Y for "redo," it doesn't work.
For example, suppose I did four actions in order: A - B - C - D, which can be "type something" or "copy and paste something" or "format something." I realized I want to go back to the point B. I pressed Ctrl+Z two times. It's now at point B. But I also realized that point C looks better. I press Ctrl+Shift+Z by accident. Nothing happens. After then, even if I click Ctrl+Y, I cannot go back to points C or D.
I tried to customize the shortcut keys, but "redo" and "undo" actions cannot be customized (answer from Microsoft Support agent). "Redo" action should be really done by BOTH Ctrl+Y and Ctrl+Shift+Z to avoid any confusion. At least, the current Ctrl+Shift+Z should not delete any action traces I had. This is really a problem that needs to be fixed soon!!!
Similar problems found in other posts:
Globally changing Redo to Ctrl-Shift-Z
https://superuser.com/questions/532229/globally-changing-redo-to-ctrl-shift-z
Ctrl-Shift-Z and Ctrl-Y should both REDO by default.
https://github.com/notepad-plus-plus/notepad-plus-plus/issues/856