[Libvir] new ruby error handling

[Vadim Zaliva]

I have a dumb question about new error handling. What is the rationale  
for using
'libvirt_message' instead of 'message' in new Libvirt Ruby error  
classes?
Here is an example of code I am writing:

   rescue SystemCallError
    	process($!.message)
	...
   rescue Libvirt::Error
    	process($!.libvirt_message)
	...

instead of, shorter:

   rescue Libvirt::Error, SystemCallError
    	process($!.message)
	...

In reality, my rescue classes are bit longer, so the code gets hairy.
Wouldn't it be better to use standard 'message' attribute instead?

Sincerely,
Vadim

--
"La perfection est atteinte non quand il ne reste rien a ajouter, mais
quand il ne reste rien a enlever."  (Antoine de Saint-Exupery)


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