Hi,
Thanks for the great plugin!
I found a small issue that is slightly annoying.
With the following file

$ sudo chown root hello.txt
$ cat hello.txt

a
b
c
keep_cursor_here_on_exit
d
e

And the following minimal neovim config file

$ cat my_init.vim
set runtimepath^=./vim
let &packpath = &runtimepath

call plug#begin('./vim/plugged')

Plug 'lambdalisue/vim-suda'

call plug#end()

" Enable auto sudo write
let g:suda_smart_edit = 1

If i open the file with

$ nvim -u ./my_init.vim ./hello.txt

navigate to the keep_cursor_here_on_exit line, exit neovim, then open it again, and run the To the cursor position when last exiting the current buffer command aka,

`" 

the cursor is placed on the line containing c rather than keep_cursor_here_on_exit.
In contrast, if the file is owned by my user, and SudaRead is not executed, going to the last exit mark successfully goes to the keep_cursor_here_on_exit line.

I'm guessing vim-suda somehow modifies the last exit line mark during its execution.