Can't create backward-kill-path-component keybind

[shilangyu]

I created a $OMF_CONFIG/key_bindings.fish file where I placed 2 keybinds:

bind \b backward-kill-path-component # ctrl+backspace
bind \e\[3\;5~ kill-word             # ctrl+delete

ctrl+delete works fine while ctrl+backspace doesnt at all. Before using pisces i had these keybinds in ~/.config/fish/config.fish as:

function fish_user_key_bindings
	bind \b backward-kill-path-component # ctrl+backspace
	bind \e\[3\;5~ kill-word             # ctrl+delete
end

The above worked for both binds.