tree a0f3eb79f90f97bec8c63c6186628d3f23ec1a97
parent 7c4b6277d74d8ed0552f1dd6f26d838ad61f289d
author Rebecca Stambler <rstambler@golang.org> 1582140312 -0500
committer Rebecca Stambler <rstambler@golang.org> 1582144001 +0000

internal/lsp: clear diagnostics for deleted files

Diagnostics should be cleared for files which are (1) deleted on disk
and not open in the editor, and (2) closed and only open in the editor.

Enable the corresponding regression test, and fix a few issues raised by
staticcheck.

Fixes golang/go#37049

Change-Id: Iff736a7f6c3eaacda4237c2e4cf7926e9949dece
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220079
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>