message: Take aliases into account in diagnostics.
diff: @@ -61,7 +61,7 @@ monaco.editor.onDidCreateModel(model => {
  const executables = await io.executablesInPaths(session.environment.path);
  - if (!executables.includes(commandName)) {
  + if (!executables.includes(commandName) && !session.aliases.has(commandName)) {
  monaco.editor.setModelMarkers(model, "upterm", [{
  severity: monaco.Severity.Error,
  message: `Executable ${commandName} doesn't exist in $PATH.`,
  