x/tools/gopls: completion with current/dot import package functions and variables

[jheroy]

It would be nice if completion offer current package and dot import package functions and variables like sourcegraph/go-langserver does.

Consider this code:

func completeMe(i int){}

com<>

if I type com the completeMe should popup. Dot import package just like this but the completeMe is not define current package but in other package and imported use import . "package_name".

I know do import is not recommended. But I have a very old project use this extensively.