To reproduce:
$ jpackage --help
...
Generic Options:
@<filename>
--app-version <version>
Version of the application and/or installer
Read options and/or mode from a file
The "Read options and/or mode from a file" message belongs after the @<filename> and not as part of the "--app-version".
$ jpackage --help
...
Generic Options:
@<filename>
--app-version <version>
Version of the application and/or installer
Read options and/or mode from a file
The "Read options and/or mode from a file" message belongs after the @<filename> and not as part of the "--app-version".