How to rerun last command in zsh as sudo

Question

I'm using zsh with oh-my-zsh. I'm trying something very simple:

alias fu='sudo !!'

So, if I issued a command that needed a forgotten sudo I could quickly re-do it.

Yes, I googled for that and I even saw several examples but NONE worked for me. For example:

ls
bla bla
!!
zsh: command not found: !!

I also tried:

ls
bla bla
fc -e : -1
bla bla
# that worked! But let's see with sudo...
ls
bla bla
sudo fc -e : -1
# nothing happens!

Another:

alias redo='sudo $(history -p !!)'
# didn't work

I've tried in Mac and Ubuntu, same issues.

Answer 1

Just an idea (not tested), based on the link you provided in your question (but which explains a bash solution): Instead of an alias redo, you create a function of this name. Inside the function, you can do a

local last_hist=( $(fc -l -1) )

which stores the most recently executed command into the array last_hist, but prefixed by the history number. You remove the history number by

shift last_hist

and execute your sudo command by

sudo "${last_hist[@]}"

However, is it so much more work to just write

sudo !!

instead of your carefully crafted function

redo

?