shell – 使用运算符j处理zsh数组

function +vi-git-st() {
    local ahead behind remote
    local -a gitstatus

    # Are we on a remote-tracking branch?
    remote=${$(git rev-parse --verify ${hook_com[branch]}@{upstream} 
        --symbolic-full-name 2>/dev/null)/refs/remotes/}

    if [[ -n ${remote} ]] ; then
        # for git prior to 1.7
        # ahead=$(git rev-list origin/${hook_com[branch]}..HEAD | wc -l)
        ahead=$(git rev-list ${hook_com[branch]}@{upstream}..HEAD 2>/dev/null | wc -l)
        (( $ahead )) && gitstatus+=( "${c3}+${ahead}${c2}" )

        # for git prior to 1.7
        # behind=$(git rev-list HEAD..origin/${hook_com[branch]} | wc -l)
        behind=$(git rev-list HEAD..${hook_com[branch]}@{upstream} 2>/dev/null | wc -l)
        (( $behind )) && gitstatus+=( "${c4}-${behind}${c2}" )

        hook_com[branch]="${hook_com[branch]} [${remote} ${(j:/:)gitstatus}]"
    fi
}

我不明白最后一行.变量gitstatus是一个数组,那么${(j：/

（编辑：李大同）

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