Inconsistency in filter warning errors

[edwardxml]

What is your current rclone version (output from rclone version)?

1.53.2 Ubuntu ARM64

What problem are you are trying to solve?

The potential conflict arising from mixing --include... and --exclude... filter options in a command line is properly trapped with an error message. The same issue arises mixing --filter... options with either of the earlier option families but no error message is created.

https://forum.rclone.org/t/implied-include-filter/20217/5

The conflict 'error' message is currently sent to std error but the return from the command remains zero.

How do you think rclone should be changed to solve that?

Consider a more consistent approach to presenting the error message and whether or not the return value should change.

My reservations - breaking backwards compatibility in the installed base.

Edit 1 - altered to remove refs to --files-from... Filters are disabled with it and proper error message in place