Here's an excerpt from my ~/.vimrc, which I implemented using the very good "remap nothing" idea from the already existing answer provided by @the_velour_fog, but I improved the idea and the implementation further to be almost something like "change nothing", as described below:
" Display a list of marks and allow their easy selection, without
" remapping any keys or changing the original vim behavior, down
" to the error messages produced for unknown marks
function ListSelect(command, jump)
execute a:command
echohl Question
echo "Enter mark (ESC to cancel): "
echohl NONE
let mark = nr2char(getchar())
redraw
if mark !=# "\e"
try
execute "normal! g" .. a:jump .. mark
catch
echohl ErrorMsg
echo substitute(v:exception, "^Vim(.*):", "", "")
echohl NONE
endtry
endif
endfunction
nnoremap ` :call ListSelect("marks", "`")<CR>
nnoremap ' :call ListSelect("marks", "'")<CR>
As described in the vimscript code, this version retains the ability to use <ESC> to cancel the whole operation, and still produces the same error messages for unknown marks, without throwing "execution failed" errors at the user.
This version also produces a prompt message that looks just like all such messages produced by vim itself, furthering the "change nothing" approach.