在查找文件时让 compgen 在目录中包含斜杠 [英] Getting compgen to include slashes on directories when looking for files

问题描述

我想从我的自定义完成中获得以下行为

I'd like to get the following behavior from my custom completion

给定

$ mkdir foo
$ touch foo faz/bar faz/baz

我想要这个

$ foo -u <tab><tab> =>
foo faz/

$ foo -u fa<tab><tab> =>
foo -u faz/

$ foo -u faz/<tab><tab> =>
bar baz

我假设 compgen -ff 会输出 foo faz/，但它输出的 foo faz 对我没有多大帮助.

I assumed that compgen -f f would output foo faz/, but it outputs foo faz which doesn't help me much.

我是否需要对输出进行后处理，或者是否有一些神奇的选项组合来compgen 起作用?

Do I need to post-process the output or is there some magic combination of options to compgen that work?

推荐答案

我遇到了同样的问题.这是我正在使用的解决方法:

I ran into the same problem. Here's the workaround I'm using:

1. 使用-o default注册完成函数，例如，complete -o default -F _my_completion.
2. 当你想完成一个文件名时，只需设置 COMPREPLY=() 并让 Readline 接管(这就是 -o default 所做的).

1. Register the completion function with -o default, e.g., complete -o default -F _my_completion.
2. When you want to complete a filename, just set COMPREPLY=() and let Readline take over (that's what the -o default does).

这有一个潜在的问题——您可能正在使用 COMPREPLY=() 在不合适的地方拒绝完成，现在这将不再起作用.在 Bash 4.0 及更高版本中，您可以使用 compopt 解决此问题，如下所示:

There's a potential problem with this -- you might be using COMPREPLY=() to deny completion where it's not appropriate, and now that won't work anymore. In Bash 4.0 and above, you can work around this using compopt as follows:

1. 在完成函数的顶部，始终运行 compopt +o default.当 COMPREPLY 为空时，这会禁用 Readline 文件名补全.
2. 当你想完成一个文件名时，使用compopt -o default;COMPREPLY=().换言之，仅在需要时启用 Readline 文件名补全.

1. At the top of your completion function, always run compopt +o default. This disables Readline filename completion when COMPREPLY is empty.
2. When you want to complete a filename, use compopt -o default; COMPREPLY=(). In other words, enable Readline filename completion only when you need it.

我还没有想出 4.0 之前的 Bash 的完整解决方法，但我有一些对我来说足够好用的方法.如果有人真的关心，我可以描述这一点，但希望这些较旧的 Bash 版本无论如何很快就会被淘汰.

I haven't figured out a full workaround for pre-4.0 Bash, but I have something that works well enough for me. I can describe this if anyone really cares, but hopefully these older Bash versions will soon fall out of common use anyway.

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