git-diff-fzf

#!/usr/bin/env bash



git_diff_string() {
    git branch | \
        tr -d '*' | \
        awk '{print $1}' | \
        fzf --multi=2
}

set -x
_git_diff_result="$(git_diff_string)"

num_result=$(wc -w <(echo ${_git_diff_result}) | awk '{print $1}')


if [[ $num_result == 1 ]]; then
    git diff HEAD..${_git_diff_result} "$@"

elif [[ $num_result == 2 ]]; then
    git diff $(echo $_git_diff_result | sed 's/ /../') "$@"
fi