[cookiecaper]

Up-up-Ctrl+K to kill the line; down to go down one in the history; end to go to end of line; `; and` or ` &&` to join the commands; ctrl+Y to yank the line from the killring. [0]

Seems to work in bash too, fwiw.

[0] https://fishshell.com/docs/current/interactive.html#copy-and...