52f7050 New global CLI option --traceback

Authored and Committed by cqi 4 years ago
    New global CLI option --traceback
    
    Option --traceback controls when to print the full traceback and when to just
    print a single line of message raised from underlying code.
    
    The latter is default. For debug purpose, add --traceback to command line.
    
    Signed-off-by: Chenxiong Qi <cqi@redhat.com>
    
        
file modified
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