Re: [Libguestfs] [PATCH v2 4/5] tools: Add machine_output function.

On Friday, 16 March 2018 14:30:42 CET Richard W.M. Jones wrote: While I like the idea of machine readable output (with a standard format even), I'm not sure about this way of printing it together with non-machine readable stuff such as debug and trace. The problem is that the debug output goes to stdout, and the trace to stderr, so v2v users would need to "drain" either of them to get the machine readable markers, then drain until the end marker, and so on to the next marker (until the end of the execution). IMHO a better idea is to send the machine readable stuff to something else, e.g. using --machine-readable-output FILE --machine-readable-FD FD This way, v2v users will just get the right data with no need to filter anything else. The same mechanism can be extended to --print-source, and to the status/progress output (avoiding the need to parse even shell colors). -- Pino Toscano