如何将ex命令输出重定向到当前缓冲区或文件？ [英] How to redirect ex command output into current buffer or file?

问题描述

如何将ex命令的输出重定向或管道到我当前的缓冲区或文件中？

例如，我想读取所有寄存器到当前缓冲区中，在ex模式下使用：registers

。

解决方案>

 ：redir> name_of_registers_file 
：registers 
：redir END 
：r name_of_registers_file 
：help redir 
  

最后一个命令非常有用，因为有很多重定向选项：变量，寄存器，

我仍然发现很奇怪，并且恼人​​的是，它使用END，但是因为一切可以跟随 redir 必须以非字词开头，至少不含糊。

PS AFAIK这种情况下）没有办法直接读入缓冲区：你必须先将它存储在寄存器或变量。

PPS 如果你想使用变量-maybe来封装它在一个函数，避免clobbering寄存器或全局变量 - 你将不得不将写入变量的多行字符串转换为列表。 EG

 ：call append（'。'，split（variable_you_redirected_to，\\\
））
  

否则（如果你只是 append（'。'，var） ）你最终得到^ @的（nulls）而不是换行符，因为这是vimscript用来表示字符串变量中的换行符。

>：as @Bill Odom提到，使用：put = variable_you_redirected_to 比复杂的 append（） 。谢谢，Bill！

---

PPPS

片段，以便使此内容更方便。它声明一个函数 Redir（command，target）和命令 R 。

该命令将最后一系列非空格字符解析为重定向目标，并将其传递给函数，该函数执行将命令输出重定向到重定向目标的样板。

该命令是 R 之后，最后一个空格之前的所有内容。

p>

 将vim缓冲区列表存储在buffer_list.txt中
：R ls> buffer_list.txt 
Store 
：R调用FunctionBeingDebugged（）@>
在调用的函数发出的错误消息
 
  

这有一些限制：例如，您将无法写入文件名包含一个空格。这一点的好处是，你不必引用你的命令。我已经发布在gist.github.com，如果我最终改进它，我会尽量保持更新。

无论该代码段是否可用此处。它可以放入.vimrc文件或〜/ .vim / plugins中的文件中。

How can I redirect or pipe the output of an ex command into my current buffer or a file?

For example, I want to read the contents of all the registers into the current buffer, which in ex mode is shown using :registers.

解决方案

:redir >name_of_registers_file
:registers
:redir END
:r name_of_registers_file
:help redir

The last command is very useful, since there are lots of options for redirection: to variables, to registers, how to append, further cornucopia.

I still find it weird and annoying that it uses END that way, but since everything else that can follow redir has to start with a non-word-character, at least it's not ambiguous.

PS AFAIK (which is pretty far in this case) there's no way to read it directly into the buffer: you have to store it in a register or a variable first. Check the help for the various options of how to do that.

PPS If you do want to do this using a variable —maybe to encapsulate it in a function and avoid clobbering registers or global variables— you'll have to convert the multiline string that gets written to the variable into a list. EG

:call append( '.', split(variable_you_redirected_to, "\n") )

Otherwise (if you just do append('.',var)) you end up with ^@'s (nulls) instead of newlines, since that's what vimscript uses to represent newlines in String variables.

edit: as @Bill Odom mentions, using :put =variable_you_redirected_to is a lot easier than the complicated append() expression. Thanks, Bill!

---

PPPS

I've written a snippet to make this stuff more convenient. It declares a function Redir(command, target) and a command R.

The command parses the last series of non-space characters as a redirection target and passes that to the function, which does the boilerplate to redirect the command output to the redirection target.

The command is everything after R and before the last space.

EG

" Store the vim buffer list in buffer_list.txt
:R ls >buffer_list.txt
" Store error messages emitted by a function being debugged
"   in the 'unnamed register'
:R call FunctionBeingDebugged() @">

There are a few limitations with this: for example you won't be able to write to a filename that contains a space. The upside to this is that you don't have to quote your command. I've got it posted on gist.github.com, and I'll try to keep it updated if I end up improving it. Or you can fork it yourself</noeuphemism>!

Anyway the snippet is available here. It can be dropped into a .vimrc file or into a file in ~/.vim/plugins.

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