I just hit
SPC a u and it opened the undo-redo tree. Now I can't operate it.
I go on the tree, press enter and nothing happen. I can't close it!
:q is unrecognized. How do I operate this ?
Vim editing style, naturally:
j and k to navigate through the tree up and down.
h and l to switch branches.
Emacs editing style:
n and p to navigate through the tree up and down.
f and b to switch branches.
both editing styles:
q or C-g to quit and leave in current state.
C-q to abort changes.
Note: Undo-Tree is a very powerful package and has lots of useful/cool features that are comprehensively explained only in its source code embedded documentation, which could be visualized by calling:
M-x finder-commentary <RET>
Or take a look at the Online Undo-tree documentation
Other useful commands:
d Toggle diff display.
t Toggle display of time-stamps.
s Toggle keyboard selection mode.
, and < Scroll left
. and > Scroll right