Parallel parsing, fix logging and deprecation warnings #1620
+101
−54
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#1537 introduced various pecularities in the logging regarding parallel parsing. In particular, for a single input stream, a deprecation warning is shown even when
--parse-parallel
or-p
are explicity specified on the command line, which is the recommended behavior. This code is now refactored, with a more uniform and informative logging, and a deprecation warning is only shown when it should be.