Git短縮コマンド ref. http://qiita.com/uasi/items/6ebcce530d9530293fec

benri_git.zsh

_git_alias() {
    if `git status >/dev/null 2>&1`; then
        command=${1}
        shift
        git ${command} "$@"
        if [ "${command}" = 'status' ]; then :; else echo ''; git status; fi
        return 0
    else
        echo "_git_alias: Not a git repository" 1>&2
        return 1
    fi
}

_git_alias_B() {
    if `git status >/dev/null 2>&1`; then
        if `which peco >/dev/null 2>&1`; then
            alias -g B='`git branch | peco | head -n 1 | sed -e "s/^\*\s//g"`'
        else
            unalias \B >/dev/null 2>&1
        fi
    else
        unalias \B >/dev/null 2>&1
    fi
}
add-zsh-hook precmd _git_alias_B

alias st='_git_alias status'
alias ck='_git_alias checkout'
alias br='_git_alias branch'
alias co='_git_alias commit'
alias mr='_git_alias merge'
alias pu='_git_alias push'
alias di='_git_alias diff'
alias rb='_git_alias rebase'
alias gg='_git_alias graph'
alias lg='_git_alias logg'