message: feat: add on as alias for only
diff: @@ -88,6 +88,7 @@ export const commandParsers = {
  vne: fileCmd.parseEditNewFileInNewVerticalWindowCommandArgs,
  vnew: fileCmd.parseEditNewFileInNewVerticalWindowCommandArgs,
  + on: parseOnlyCommandArgs,
  only: parseOnlyCommandArgs,
  set: parseOptionsCommandArgs,
  