As I was experimenting with the style files, I introduced an error in one of the rules.  Then mkgmap naturally reported an error at, say "line 60:20", but the error line was actually several lines further down, say line number 73.

   I think mkgmap is skipping lines with comments #.....  or blank lines.  I think comment or blank lines should be computed for line numbering matter, which helps a lot in locating them in text editors.

   To reproduce the issue, just corrupt some rule (I experienced it in inc/address file), taking note of its line number, and compile.

thanks,

Paulo