nullglob禁用路径选项卡，完成 [英] nullglob disables pathname tab-completion

问题描述

我发现，禁用了javascript -s nullglob 显然禁用选项卡，完成对文件和目录，而禁用了javascript -u nullglob 恢复它。为什么制表完成对目录显然依赖于 nullglob 取消设置被？

I have found that shopt -s nullglob apparently disables tab-completion for files and directories, and shopt -u nullglob restores it. Why does tab-completion for directories apparently rely on nullglob being unset?

我使用bash 4.2.37（1）-release 在Debian 7。

I am using Bash 4.2.37(1)-release on Debian 7.

推荐答案

这显然是一个已知的问题bash的完成和被列为目标，固定在3.0版本。

This is apparently a known issue with bash-completion and is listed as an objective to be fixed in the 3.0 version.

但很显然它一直这样，因为至少2012

But apparently it has been that way since at least 2012.

请参阅 https://bugs.debian.org/cgi-bin /bugreport.cgi?bug=666933 以供参考。

编辑：至少2011：的http：//线程。 gmane.org/gmane.comp.shells.bash.completion.devel/3652

At least 2011: http://thread.gmane.org/gmane.comp.shells.bash.completion.devel/3652

<罢>我不都不懂nullglob如何导致在电子邮件中列出的问题，但

编辑：我现在明白发生了什么。问题是，水珠扩张是哑巴。它认为在全部字 $ 2 [$ J] = \\ $ {！裁判} \\ $ {COMP_WORDS [I]} 作为一个单一的和glob的尝试将其展开。通常情况下失败，它被单独留在家中，但会 nullglob 上整个参数简单地消失（从而导致问题）。

I now understand what is happening. The problem is that glob expansion is dumb. It sees the entire "word" $2[$j]=\${!ref}\${COMP_WORDS[i]} as a single glob and tries to expand it. Normally that fails and it gets left alone but will nullglob on that entire argument simply vanishes (thus causing the problem).

快速测试表明，这种替换：

Quick testing indicates that replacing this:

eval $2[$j]=\${!ref}\${COMP_WORDS[i]}

有两种：

eval $2\[$j\]=\${!ref}\${COMP_WORDS\[i\]}

或

eval "$2[$j]=\${!ref}\${COMP_WORDS[i]}"

似乎来解决这个问题。我不能保证这些要么是完全正确的，虽然修复的。

seems to fix the problem. I can't vouch for either of those being a fully correct fix though.

更新：这是固定在debian的bash自动完成git仓库已经（在我没有想过但方式显然是更好的）

Update: This is fixed in the debian bash-completion git repository already (in a way I hadn't thought of but which is clearly better).

<一个href=\"http://anonscm.debian.org/cgit/bash-completion/bash-completion.git/commit/bash_completion?id=732906b25096508fbc5d15d684dea0312ed7fca0\"相对=nofollow>这个承诺修复它。还有其他相关的通配符修复了。

This commit fixes it. There are other globbing related fixes too.

拼抢 __ reassemble_comp_words_by_ref 从Git的头和采购，关于当前上方的来解决这个问题作为临时解决方法/解决方案。

Grabbing the __reassemble_comp_words_by_ref from git head and sourcing that on top of the current one appears to fix the problem as a temporary workaround/solution.

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