问题描述
如何将 :E 映射到 :Explore?如果我现在执行 :E，我已经安装了导致 E464: Ambiguous use of user-defined command 的扩展，但我的手指不会忘记命令！
How can I map :E to :Explore? I've installed an extension that leads to E464: Ambiguous use of user-defined command if I do :E now, but my fingers won't forget the command!
我尝试了 map :E :Explore，但这很难看，因为它使访问其他命令变得困难.
I tried map :E :Explore, but that's ugly since it makes accessing the other commands difficult.
我试过这些:
cmap :E<CR> :Explore<CR>
cmap :E^M :Explore^M
(其中 ^M = control-v + enter)但是除非我真的非常快地按 Enter，否则这些都不起作用.
(where ^M = control-v + enter) but these don't work unless I hit enter really really fast.
推荐答案
:E 通常就足够了，如果 :Explore 是唯一以E.您显然定义了多个此类命令，因此 :E 不明确并导致错误.
:E would normally suffice as is if :Explore were the only defined command that began with an E. You evidently have multiple such commands defined, so :E is ambiguous and results in an error.
:cmap 会导致立即的文字替换，从而产生不需要的副作用.一个稍微好一点的替代方法是 :cabbrev，它可以用来定义命令模式的缩写:
:cmap causes immediate literal substitution and thus has unwanted side effects. A slightly better alternative is :cabbrev, which can be used to define abbreviations for command mode:
cabbrev E Explore
这会在 或 之后触发.前者是需要的，因为输入 将调用 :Explore，但后者在命令模式.
This triggers following or . The former is desired because typing will invoke :Explore, but the latter again has side effects in command mode.
为了使 :E 正确别名为 :Explore，必须将其定义为单独的命令:
In order for :E to be properly aliased to :Explore, it must be defined as a separate command:
command! E Explore
然而，:command E 列出了所有以 E 开头的已定义命令，显示 :E 和 :Explore 有不同的属性.例如，不可能执行 :E ~ 因为 :E 不接受任何参数.此外，与 :Explore 不同，:E 不会自动完成目录.
However, :command E, which lists all defined commands that start with E, reveals that :E and :Explore have different properties. For example, it's impossible to execute :E ~ because :E does not accept any arguments. Also, unlike :Explore, :E does not autocomplete directories.
为了弥补这些缺陷，:E 的定义方式必须与 :Explore 完全相同.执行:verbose command Explore 显示了定义:Explore 的脚本的位置；:E 然后可以用相同的方式定义，添加 :
To remedy these deficiencies, :E must be defined in exactly the same way as :Explore. Executing :verbose command Explore shows the location of the script in which :Explore is defined; :E can then be defined in the same manner, with the addition of <args>:
command! -nargs=* -bar -bang -count=0 -complete=dir E Explore <args>
虽然可以从 :command Explore 提供的信息中推断出大部分这些属性，但仍然可能存在差异，例如在这种情况下的 -bar.
While it's possible to deduce most of these attributes from the information provided by :command Explore, there can still be discrepancies, such as -bar in this case.
注意如果定义了 :Explore 和 :Example，:Exp 和 :Exa 是最短的明确命令用过的.显式地将 :E 别名为其中之一，如上所述，会覆盖 Vim 的默认行为并允许消除歧义.但是，:Ex 仍然是模棱两可的.
N.B. If :Explore and :Example are defined, :Exp and :Exa are the shortest unambiguous commands that can be used. Explicitly aliasing :E to one of them, as above, overrides Vim's default behavior and allows for disambiguation. However, :Ex would still be ambiguous.
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