This is related to #849: in that pull request we avoided *storing*
empty diagnostics, but we'd still report an event when receiving
consecutive empty diagnostics. So if the project diagnostics editor
was open, it could happen that opening a buffer would cause the
language server to report zero diagnostics. We would therefore close
the buffer because there were no diagnostics, but doing so would cause
the LSP to report another event with zero diagnostics. This would repeat
forever, causing Zed to use a lot of CPU and the UI not to refresh properly.
With this commit we will simply avoid emitting a `DiagnosticsUpdated` event
altogether if no diagnostics were present before *and* the LSP is reporting
a `PublishDiagnostics` event with no diagnostics in it.
When opening a buffer, some language servers might start reporting
diagnostics. When closing a buffer, they might report that no diagnostics
are present for that buffer. Previously, we would keep an empty summary entry
which would cause us to open a buffer in the project diagnostics view, only to
drop it because it contained no diagnostics. However, the act of opening it
caused the language server to asynchronously report non-empty diagnostics.
We would therefore handle this as an update, but the previous closing of the
buffer would cause the language server to report empty diagnostics again. This
would cause the project diagnostics view to thrash infinitely between these two
states, pegging the CPU and constantly refreshing the UI.
With this commit we won't maintain empty summary entries for files that contain
no diagnostics, which fixes the above issue.
Co-Authored-By: Nathan Sobo <nathan@zed.dev>
Previously, we would only compare the path relative to the worktree root, which
would cause Zed to sometimes update diagnostics on the wrong buffer. This
manifested in the project diagnostics not showing those errors/warnings while
the status bar and the tab title displayed a summary with errors/warnings.
This commit simply uses `Project::get_open_buffer` which correctly locates a
buffer with the given project path.
This fixes an error in the randomized test that would cause the future
returned from `Worktree::share` to never finish due to a bug in `postage`
that causes its waker to not be notified upon drop.
These completions don't supply a range that should be overwritten, so
the client needs to infer it via substring matching.
Co-authored-by: Keith Simmons <keith@zed.dev>
