git grep and replace

profile fragment.zsh

gg_replace() {
    if [[ "$#" -lt "2" ]]; then
        echo "
Usage:
  $0 term replacement file_mask

Example:
  $0 cappuchino cappuccino '*.html'
";
    else
        local find="$1"; shift;
        local replace="$1"; shift;
        git grep -zlI "${find}" -- "$@" |
            xargs -0 sed -e "s/${find}/${replace}/g" -i '' ;
    fi;
}