${BASH_SOURCE[0]} 在 zsh 中等效? [英] ${BASH_SOURCE[0]} equivalent in zsh?

问题描述

标题应该说明一切.我正在 zsh 中寻找与 ${BASH_SOURCE[0]} 等效的代码.

The title should say it all. I'm looking for an equivalent to ${BASH_SOURCE[0]} in zsh.

注意: 我一直在互联网上发现$0 等价于 ${BASH_SOURCE[0]}"，但这似乎为假:$0 似乎是执行命令的名称.(它是 argv[0]，这是有道理的.)在我的脚本 (.zshrc) 中回显 $0 为 $0<提供 zsh/code>，这与 ${BASH_SOURCE[0]} 不同.事实上，${BASH_SOURCE[0]} 似乎在 zsh 中工作，除了在 .zshrc 文件中.

Note: I keep finding "$0 is equivalent to ${BASH_SOURCE[0]}" around the Internet, but this seems to be false: $0 seems to be the name of the executing command. (It's argv[0], which makes sense.) Echoing $0 in my script (.zshrc) gives zsh for $0, which isn't the same as what ${BASH_SOURCE[0]} is. In fact, ${BASH_SOURCE[0]} seems to work in zsh, except for inside .zshrc files.

我在 .zshrc 中真正在做什么(不起作用):

What I'm really doing in my .zshrc (that isn't working):

echo ${BASH_SOURCE[0]}
source `dirname $0`/common-shell-rc.sh

源失败($0 是 zsh)并且 echo 输出一个空行.

The source fails ($0 is zsh) and the echo outputs a blank line.

显然，要使 $0 工作，我需要选项 FUNCTION_ARGZERO 选项集.有什么方法可以测试这是否在脚本中设置?(以便我可以临时设置它) 除非您设置 nofunction_argzero，否则它显然已打开，并且它在我的外壳中已打开.$0 仍然一无所获.(我认为 b/c 我不在函数中.)

apparently, for $0 to work, I need the option FUNCTION_ARGZERO option set. Any way to test if this is set in a script? (so that I can temporarily set it) It is apparently on unless you set nofunction_argzero, and it is on in my shell. Still get nothing for $0. (I think b/c I'm not in a function.)

推荐答案

${BASH_SOURCE[0]} 在 zsh 中等效为 ${(%):-%N}code>，而不是 $0(正如 OP 所说，后者在 .zshrc 中失败)

${BASH_SOURCE[0]} equivalent in zsh is ${(%):-%N}, NOT $0(as OP said, the latter failed in .zshrc)

这里的%表示对值进行提示扩展，%N 表示脚本的名称，源文件，或者 zsh 当前正在执行的 shell 函数，

Here % indicates prompt expansion on the value, %N indicates "The name of the script, sourced file, or shell function that zsh is currently executing,

以最近开始的为准.如果没有，这相当于参数 $0."(from man zshmisc)

whichever was started most recently. If there is none, this is equivalent to the parameter $0."(from man zshmisc)

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