It would not work because 1=1 is interpreted as $1='1' and that will probably not be true. Same effect with '1' = '1' .
Maybe we can add a style function "true()" which always retrurns true for this? Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkg...@jagit.co.uk> Gesendet: Mittwoch, 8. März 2017 09:25:34 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] if-then-else in style and style options Hi I think you should document that you need a dummy condition, ie if (...) then 1=1 {action} ... 1=1 [0x1c ...] end (I assume this should work OK) Ticker On Wed, 2017-03-08 at 08:07 +0000, Gerd Petermann wrote: > Hi all, > > while writing the documentation I noticed this possible problem case: > The lines file in the default style contains these rules: > boundary=administrative { name '${mkgmap:boundary_name}' } > boundary=administrative & admin_level<3 [0x1e resolution 12] > boundary=administrative & admin_level<5 [0x1d resolution 19] > boundary=administrative & admin_level<7 [0x1c resolution 21] > boundary=administrative & admin_level<9 [0x1c resolution 22] > boundary=administrative [0x1c resolution 22] > > So, one may want to extract the clause boundary=administrative like > this: > if (boundary=administrative) then > { name '${mkgmap:boundary_name}' } > admin_level<3 [0x1e resolution 12] > admin_level<5 [0x1d resolution 19] > admin_level<7 [0x1c resolution 21] > admin_level<9 [0x1c resolution 22] > [0x1c resolution 22] > end > > The problem: It doesn't work because the lines > { name '${mkgmap:boundary_name}' } > and > [0x1c resolution 22] > are not a valid rules and the rule parser "forgets" that the > boundary=administrative expression will be added. > > What do you think? Should mkgmap support this syntax? > > Gerd > ________________________________________ > Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag > von Gerd Petermann <gpetermann_muenc...@hotmail.com> > Gesendet: Dienstag, 7. März 2017 20:10:52 > An: Development list for mkgmap > Betreff: Re: [mkgmap-dev] if-then-else in style and style options > > Hi Andrzej, > > thanks, so I'll try to document the new syntax next. > > Gerd > ________________________________________ > Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag > von Andrzej Popowski <po...@poczta.onet.pl> > Gesendet: Dienstag, 7. März 2017 17:40:16 > An: mkgmap-dev@lists.mkgmap.org.uk > Betreff: Re: [mkgmap-dev] if-then-else in style and style options > > Hi Gerd, > > I have run some tests with current code and spotted no problems. I > have > tested both, if-then-else statement and style-option. > > -- > Best regards, > Andrzej > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev