>> My point was not so much about --compress but rather giving a good error >> message.
>Right, and my point was that the issue is bigger than --compress. >For example, you get exactly the same misbehavior with >$ pg_basebackup --checkpoint=fast --format=t -d --pgdata=/var/tmp/dummy >pg_basebackup: error: must specify output directory or backup target >pg_basebackup: hint: Try "pg_basebackup --help" for more information. >I'm not sure how to solve the problem once you consider this larger >scope. I don't think we could forbid arguments beginning with "-" for >all of these switches. It is not dependent on short or long switches: $ pg_basebackup --checkpoint=fast --format=t -p --pgdata=/var/tmp/dummy pg_basebackup: error: must specify output directory or backup target pg_basebackup: hint: Try "pg_basebackup --help" for more information. $ pg_basebackup --checkpoint=fast --format=t --port --pgdata=/var/tmp/dummy pg_basebackup: error: must specify output directory or backup target pg_basebackup: hint: Try "pg_basebackup --help" for more information. Maybe checking if a valid "-D" or "--pgdata" was given and return a more generic error message would be an option? Regards Daniel