[mkgmap-dev] Commit r4594: improve diagnostic messages (diagnostics8.patch by Mike Baggaley)

Version mkgmap-r4594 was committed by gerd on Sat, 16 Jan 2021 improve diagnostic messages (diagnostics8.patch by Mike Baggaley) Those who parse the logging results with scripts may have to adapt those scripts http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4594