Incorrect formatting, missing text and highlighting errors in documentation

[David-Else]

Describe the bug

Formatting and highlighting is wrong. It looks really bad on all Deno documents, and has the same bugs on each section of the documents.

To Reproduce

Steps to reproduce the behavior with the minimal config:

1. ... use the Deno language server
2. ... start typing Deno,con to see the docs for Deno.connect

This is how it looks:

This is how it should ideally look from VS Code:

Note:

• large empty gap at top
• "default is" wrongly colored
• "127.0.0.1" wrongly colored
• new line after 'named' that should not be there
• entire code block showing ``` when it should instead apply code block coloring
• code block ends early and has @@@ inserted wrongly
• entire last line starting requires is missing

I am using treesitter for my syntax highlighting and have the latest Neovim nightly and nvim-compe. It has always done this, it is not a regression.

EDIT: Is #260 (comment) related to the Markdown problem?

[folke]

Check the linked PR above to see how you can get better formatting of the documentation window.
I changed both the hover and signature_help rendering to use the fancy_floating_markdown instead of the simple renderer.

Would be great to have these changes applied within compe as well.

[hrsh7th]

@David-Else Please try let g:markdown_fenced_languages = ['ts=typescript']

[folke]

@hrsh7th it would still be wrong in that case.

I made some PR's upstream that were merged in the meantime that fixes that for the lsp popups.

I'm currently working on a new PR that consolidates all the floating window methods and will make it easier for other plugins like compe to use the special markdown formatting.

Once that one is merged, I'm willing to create a PR for compe

[David-Else]

It looks a bit better now, but is still messed up:

@folke A PR to use the new Markdown preview mode would be awesome!

[folke]

@David-Else PR is ready :)