A way to use ":call system('cmd')" via ":! cmd" (note the space)
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This is a mirror of http://www.vim.org/scripts/script.php?script_id=4224

I# System Vim Plugin

This is a tiny vim script which might have been discovered ages ago (but I am
unaware). Its rather for vim than gvim users.

When executing commands from vim you enter a vim shell where you see the
output. In many situations this is not what you want and you'd prefer 
    :call system("command")
but it is a lot to type, and you don't have completion. With this snippet
every command which starts with:
    :! command
(note the space after the `!`) will be wrapped into `system()` and the output
will be echoed. The plugin refreshes the history with what you typed rather
than the call to the `system()` function.

There are some configuration variables:
    g:system_expand = 1
by default `%` (with modifiers) is expanded in the same way as by the `:!`.
    g:system_echocmd = 0
echo the command together with its output (by default off).

The reason why I like it is that I have different background colors in vim
(dark) and terminal (light). If I stay inside vim I am not flushed with
bright colors which is a annoying (and may be eyes tiring).

Benefits: you get completion for system commands and system files.

You can use the expression register with Vim 7.3.686.  With an earlier version
you will not be able to use it.

# Requirements
You have to also install [CRDispatcher](https://github.com/coot/CRDispatcher)

I learned how to do that reading the
[EmacsCommandLine Plugin](https://github.com/houtsnip/vim-emacscommandline).

Other plugins with shell like functionality:
* [vim-addon-async](https://github.com/MarcWeber/vim-addon-async)
* [Conque Shell Plugin](http://code.google.com/p/conque)
* [VimProc Plugin](http://github.com/Shougo/vimproc/tree/master/doc/vimproc.txt)

## Copyright
© Marcin Szamotulski, 2012-2014

## License
Vim license, see :help license