Allow to Open multiple files in background tabs from quick open

[rosslavery]

• VSCode Version: 1.6
• OS Version: Windows 10x64

While developing components that span across multiple files (.ts, .html, .css), it is quite common to need to open all related files for a given component. In Sublime, this is achieved by pressing ctrl+right-arrow while highlighting a result in their "quick open" panel. This opens the highlighted file in a background tab while keeping the existing results set open.

In VSCode, you have to perform the same query multiple times, each time selecting the next file.

Demo Gif:
Background Open

[bpasero]

Maybe an area for a PR 👍

[wprater]

I could implement this, but do we have consensus on the key modifiers and their behavior? currently we can open in a new group using the cmd modifier.

[bpasero]

If we can use what other editors typically use here, sounds good.

[wprater]

If we can use what other editors typically use here, sounds good.

looks like in ST, it's just the right arrow! I'll push a PR.