Support for clipboard=unnamed / using system clipboard for unnamed register

[Platzer]

A setting to use the unnamed register as alias for the * register. So yy for example copies to current line to the system clipboard, and p would insert from the clipboard.

Should be a user setting (e.g. useSystemClipboard), and disbaled by default.

Further readings:

• http://vim.wikia.com/wiki/Accessing_the_system_clipboard
• http://vimdoc.sourceforge.net/htmldoc/change.html#E354 (topic 7)

[rebornix]

We've supported Vim configurations so it would be easy to add useSystemClipboard. @aminroosta , you may be interested in this task since you are the Father of Clipboard :)

Anyone who is interested in contributing can take it as well.

[aminroosta]

@rebornix Sure, I will send a pr tonight ;-)

[aminroosta]

@rebornix Sorry for the delay, i completely forgot about it 😢
Please let me know if you want any changes to the PR #655

[aminroosta]

I wanted to write a test for this but our newTest and newTestOnly functions are async. It's not easy to test new configuration options without affecting other tests.

@rebornix @johnfn I think it might be a good time to overload these functions to offer preparation and clean up callabacks. That way we can test new configuration options without affecting other tests.

[rebornix]

@aminroosta how about putting those tests sharing the same configuration into one suite and leverage the setup and teardown?

[jpoon]

This is closed with PR #665. Thanks @aminroosta

To use, add the following to your user/workspace settings:

  "vim.useSystemClipboard": true

[bufke]

This doesn't appear to be working for me. When enabled yank no longer seems to do anything. After a yank I'm unable to paste in the system or in VS Code (for instance p). Using Ubuntu 16.04. My settings are:

{
    "vim.useCtrlKeys": true,
    "vim.useSystemClipboard": true
}