Merge results from multiple DocumentHighlightProviders

[martinlippert]

as discussed in here:

microsoft/vscode-languageserver-node#318

I would love to see VS Code to support the document highlights from multiple extensions simultaneously, much in the same way hovers can be provided from multiple extensions and are displayed in the same hover popup.

The background for this is:
I have a language server based extension for VS Code that can deliver documentHighlight information for Java code, but as long as the Java language extension itself is installed and active, my documentHighlights are never shown (but the ones from the Java extension instead).

The purpose of my language server is to provide additional functionality for Java source code, not to replace the existing Java language tooling. Therefore I benefit from the ability to run multiple language servers for the same language (file type) and that the results from both are merged (which is the case for content assist and hover information, for example). I need the same mechanics for documentHighlight requests/responses... :-)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Java Debug - Cannot open file after renaming folder (#44706)

[dbaeumer]

This is about providing this in general in our API. Unrelated to language servers.

[jrieken]

Understood. Making such a change might surprise some people tho. Unsure how we should proceed.

[dbaeumer]

Good point

[jrieken]

Assigning @alexandrudima who owns the word highlight feature

[vscodebot]

This feature request is now a candidate for our backlog. The community has 60 days to upvote the issue. If it receives 20 upvotes we will move it to our backlog. If not, we will close it. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!

[kdvolder]

Making such a change might surprise some people tho

Perhaps, but probably it be a 'pleasant' surprise. I.e. something that wasn't working and ..surprise... suddenly it works :-)

[vscodebot]

🙂 This feature request received a sufficient number of community upvotes and we moved it to our backlog. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!