Duplicacy cat reports errors to stdout out instead of stderr

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#1

instead of writing error messages to stderr, duplicacy cat write them to stdout.

This breaks UNIX conventions and makes it hard to script. For instance this went to stdout:

download URL is: https://f001.backblazeb2.com
No file misc/photo/workshops/art-seeing-frans-lanting-2014-11/cL-1411-FRANZLANT-D01S05-TRAVEL_EQUIPMENT-HD.mp4
found in snapshot osprey_markd_a at revision 50

Also, the message “download URL is: https://f001.backblazeb2.com” is written to stdout, which corrupts any file obtained by the cat subcommand.

#2

I agree this is not optimal (although I’m never a fan of the std/stderr convention), but you can get rid of unwanted log messages with the -suppress option, such as:

duplicacy -suppress BACKBLAZE_URL cat ...