I saw this on this post: https://superuser.com/questions/409594/fish-control-left-control-right-keybindings
The escape sequence \e\[1\;5C
, what does it stand for?
They stand for Esc[1;5C and Esc[1;5D.
See https://unix.stackexchange.com/questions/10806/how-to-change-previous-next-word-shortcut-in-bash for what these escape sequences do.