Get git stat by lines

git_stat.fish

#!/usr/bin/fish

function git_stat
    for i in (git log --format='%aN' | sort -u)
        printf "STAT %s%s%s\n" (set_color red) "$i" (set_color normal)
        git log --author="$i" --pretty=tformat: --numstat | awk '{inserted+=$1; deleted+=$2; delta+=$1-$2; ratio=deleted/inserted} END {printf "STAT Commit stats:\nSTAT - Lines added (total)....  %s\nSTAT - Lines deleted (total)..  %s\nSTAT - Total lines (delta)....  %s\nSTAT - Add./Del. ratio (1:n)..  1 : %s\n", inserted, deleted, delta, ratio }' -
        echo
    end
end

git_stat 2>&1 | grep "STAT" | less -R

Example:

Name goes there
Commit stats:
- Lines added (total)....  7082
- Lines deleted (total)..  2938
- Total lines (delta)....  4144
- Add./Del. ratio (1:n)..  1 : 0.414855

Thanks to https://gist.github.com/eyecatchup/3fb7ef0c0cbdb72412fc