重击完成从另一个完成 [英] Bash completion from another completion

问题描述

我有一个脚本，要求以命令名称和该命令的参数作为参数.

I have a script that requires as an argument the name of command and arguments of that command.

所以我想编写一个完成函数，该函数可以完成命令的名称并可以完成该命令的参数.

So I want to write a completion function that would complete the name of the command and would complete the arguments for that command.

所以我可以像这样完成命令的名称

So I can complete the name of the command like this

if [[ "$COMP_CWORD" == 1 ]]; then
    COMPREPLY=( $( compgen -c ${COMP_WORDS[COMP_CWORD]} ))
else
    #Don't know what to write here
fi

因此，这将完成可运行的Shell命令列表的第一个参数.在第二和其他论点上，我需要完成 ${COMP_WORDS[COMP_CWORD]}命令.

So this will complete the first argument to list of shell commands that are available to run. And on second and other arguments I need a completion for ${COMP_WORDS[COMP_CWORD]} command.

我考虑过从COMP_WORDS中删除第一个元素，将COMP_CWORD减1并调用函数_${COMP_WORDS[0]} 名称带有命令前缀"_"的名称，因为在许多示例中，完成命令的功能都具有这样的名称，但是当我在bash中执行complete -p时，我发现许多命令都是由具有不同名称的功能完成的.对于我来说，这种解决方案看起来真的很糟糕.

I thought about removing first element from COMP_WORDS, decreasing COMP_CWORD by one and call a function _${COMP_WORDS[0]} with name that prefixes "_" to the command, because in many examples the function that completes a command has such name, but when I executed complete -p in bash I found that many commands are completed with functions that has different names. And as for me, such solution looks really bad.

我不是bash脚本专家，所以我只是不知道从哪里开始寻找解决方案.

I'm not a bash scripting guru so I just don't know where to start searching the solution.

推荐答案

您的要求类似于exec或time或xargs的命令完成.这些命令也采用命令&该命令的参数作为完成选项.

Your requirement is similar to the command completion for exec or time or xargs. These commands also take a command & that command's arguments as completion options.

检查exec的bash_completion选项:

Checking the bash_completion option for exec:

$ complete -p exec
complete -F _command exec

您可以重复使用与完成功能相同的功能_command.

You can re-use the same function _command as your completion function..

用法:

complete -F _command your-script.sh

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