message: Better code completion trigger characters.
diff: @@ -1304,7 +1304,9 @@ bool QueryDbMainLoop(
  response.result.capabilities.completionProvider = lsCompletionOptions();
  response.result.capabilities.completionProvider->resolveProvider = false;
  - response.result.capabilities.completionProvider->triggerCharacters = { ".", "::", "->" };
  + // vscode doesn't support trigger character sequences, so we use ':' for '::' and '>' for '->'.
  + // See https://github.com/Microsoft/language-server-protocol/issues/138.
  + response.result.capabilities.completionProvider->triggerCharacters = { ".", ":", ">" };
  response.result.capabilities.codeLensProvider = lsCodeLensOptions();
  response.result.capabilities.codeLensProvider->resolveProvider = false;
  