This adds bash-history-esque !! and !$ bindings to fish shell (and the substitution is immediate, which is neat)

fish_user_key_bindings.fish

# put these in ~/.config/fish/functions/fish_user_key_bindings.fish

function bind_bang
  switch (commandline -t)
  case "!"
    commandline -t $history[1]
    commandline -f repaint
  case "*"
    commandline -i !
  end
end

function bind_dollar
  switch (commandline -t)
  case "!"
    commandline -t ""
    commandline -f history-token-search-backward
  case "*"
    commandline -i '$'
  end
end

function fish_user_key_bindings
  bind ! bind_bang
  bind '$' bind_dollar
end