Adding optional keybinding in README causes recursive stack trace

[Barbaross93]

As the title says, trying to add the key binding in the README to the fish_user_key_bindings function cause a recursive stack trace on initializing the terminal:

fish: The function call stack limit has been exceeded. Do you have an accidental infinite loop?
  test -f $OMF_CONFIG/theme
    and read -l theme < $OMF_CONFIG/theme
    or set -l theme default
  test -e $OMF_CONFIG/key_bindings.fish;
    and source $OMF_CONFIG/key_bindings.fish
  # Prepare packages key bindings paths
  set -l key_bindings {$OMF_CONFIG,$OMF_PATH}/pkg/*/key_bindings.fish \
                      {$OMF_CONFIG,$OMF_PATH}/themes*/$theme/key_bindings.fish
  # Source all keybindings collected
  for file in $key_bindings
    source $file
  end
  bind \e\e 'thefuck-command-line'
  # Call original key bindings if existent
  functions -q __original_fish_user_key_bindings
    and __original_fish_user_key_bindings
  ^
in function '__original_fish_user_key_bindings'
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in function '__original_fish_user_key_bindings'
	called on line 46 of file ~/.local/share/omf/init.fish
in function 'fish_user_key_bindings'
in function '__fish_reload_key_bindings'
	called on line 228 of file /usr/share/fish/functions/__fish_config_interactive.fish
in function '__fish_config_interactive'
	called on line 170 of file /usr/share/fish/config.fish
in function '__fish_on_interactive'
in event handler: handler for generic event “fish_prompt”