message: Only delta update on file save if the file is already imported.
diff: @@ -1711,8 +1711,17 @@ bool QueryDbMainLoop(
  // mutex and check to see if we should skip the current request.
  // if so, ignore that index response.
  WorkingFile* working_file = working_files->GetFileByFilename(path);
  - if (working_file)
  - queue_do_index->PriorityEnqueue(Index_DoIndex(Index_DoIndex::Type::Parse, project->FindCompilationEntryForFile(path), working_file->buffer_content, true /*is_interactive*/));
  + if (working_file) {
  + // Only do a delta update (Type::Parse) if we've already imported the
  + // file. If the user saves a file not loaded by the project we don't
  + // want the initial import to be a delta-update.
  + Index_DoIndex::Type index_type = Index_DoIndex::Type::Parse;
  + QueryFile* file = FindFile(db, path);
  + if (!file)
  + index_type = Index_DoIndex::Type::ImportThenParse;
  +
  + queue_do_index->PriorityEnqueue(Index_DoIndex(index_type, project->FindCompilationEntryForFile(path), working_file->buffer_content, true /*is_interactive*/));
  + }
  completion_manager->UpdateActiveSession(path);
  break;
  