fixup.fish

function fixup
    set -lx current_branch (git rev-parse --abbrev-ref HEAD)
    set -lx commits (git log --oneline $current_branch...origin/master)[-1..1]
    set -lx len (count $commits)

    printf "Fixup: Which commit would you like to fixup? \n\n"

    for i in (seq $len)
        printf "$i) $commits[$i]\n"
    end

    printf "\n"

    while true
        read -l -P "> " selection

        if test "$selection" -gt $len -o "$selection" -lt 1
            printf "\nSelection must be a number from 1–$len\n\n"
            continue
        else
            set -lx commit $commits[$selection]
            printf "\nMarking \"$commit\" for fixup\n\n"

            set -lx hash (string split " " $commit)[1]
            git commit --fixup=$hash
            return
        end
    end
end