language-yaml blocks snippet autocompletion

[nargetdev]

Description

"language-yaml" package disables snippet auto-suggestion and tab completion.
Snippets are still available in in "Snippets:Available" section of command pallet.

Steps to Reproduce

1. begin typing a snippet which would match "*" (an available snippet) in a "snippets.cson" file
2. Notice that snippet is not autosuggested
3. command + shift + p and search "snippets:available" and see that they're still offered

[NateBowen]

I've reproduced this.

[winstliu]

This is because basically everything is tokenized as a string, which by default causes autocomplete-snippets to not suggest any snippets.