为Vim的命令行创建映射，该映射在插入之前转义寄存器的内容 [英] Create a mapping for Vim's command-line that escapes the contents of a register before inserting it

问题描述

假设我有这样的文件，并且我想搜索URL的所有出现：

Suppose that I have a document like this, and I want to search for all occurences of the URL:

Vim resources: [http://example.com/search?q=vim][q]
...
[q]: http://example.com/search?q=vim

我不想全部输入，所以我将光标放在第一个URL上，并运行uyi [将其转换为'u'注册表，现在搜索它，我想将该注册表的内容粘贴到搜索字段通过运行：

I don't want to type it out in full, so I'll place my cursor on the first URL, and run "uyi[ to yank it into the 'u' register. Now to search for it, I'd like to just paste the contents of that register into the search field by running:

/\V<c-r>u<CR> 

这导致Vim搜索字符串http： - 因为'/'字符终止搜索字段。

This results in Vim searching for the string 'http:' - because the '/' character terminates the search field.

我可以通过运行它来解决问题：

I can get around the problem by running this instead:

/\V<c-r>=escape(@u, '\/')<CR><CR>

但是这是很多打字！

如何创建一个mappi为Vim的命令行简化了这个工作流程？

How can I create a mapping for Vim's commandline that simplifies this workflow?

我的理想工作流程如下：

My ideal workflow would go something like this:

• 按 / \V 以显示搜索提示，并使用非常的nomagic模式


• 点击ctrl-x触发自定义映射（ctrl-x可用）


• Vim监听下一个按键...（按&Esc。> 将取消）


• 按'u'将转义'u'注册表的内容，并插入命令行

• press /\V to bring up the search prompt, and use very nomagic mode
• hit ctrl-x to trigger the custom mapping (ctrl-x is available)
• Vim listens for the next key press... (pressing <Esc> would cancel)
• pressing 'u' would escape the contents of the 'u' register, and insert on the command line

推荐答案

尝试这样：

cnoremap <c-x> <c-r>=<SID>PasteEscaped()<cr>
function! s:PasteEscaped()
  " show some kind of feedback
  echo ":".getcmdline()."..."

  " get a character from the user
  let char = getchar()

  if char == "\<esc>"
    return ''
  else
    let register_content = getreg(nr2char(char))
    return escape(register_content, '\/')
  endif
endfunction

顺便说一句，可能有用的知道（如果你还没有）您可以使用？作为：s 的分隔符。这意味着你可以像这样写一个url的搜索替换：

By the way, something that might be useful to know (if you don't already) is that you can use ? as the delimiter for :s. Which means that you could write a search-and-replace for an url like so:

:s?http://foo.com?http://bar.com?g

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