On 16 Sep 2013, at 21:32, Stephan Bösch-Plepelits <[email protected]> wrote:
> Hi! > > 1. Unary tests > -------------- > The MapCSS 0.2 specification[1] says the following about unary tests: > way[highway] /* Matches against all ways with the highway tag set */ > way[!highway] /* Matches against all ways with the highway tag not set > (or set to no/false) */ > > Question: Wouldn't it be more logical if the first statement does not match > ways with the highway tag set to no or false? No, you can already test for that with way[highway=false], you can’t test for the tag not existing any other way. > 2. Eval boolean type > -------------------- > A boolean > expression is considered "false" if it equals to "0", "no", "false" or "" > (empty string); [2] > > Question: Shouldn't the unary test (above) also consider "0" as false? > > [1] http://wiki.openstreetmap.org/wiki/MapCSS/0.2#Tests > [2] http://wiki.openstreetmap.org/wiki/MapCSS/0.2/eval No, because the unary test isn’t checking if it’s false or not, it’s checking if it exists or not. Note, way[highway] should match against things tagged highway=false. Tom Davie _______________________________________________ Mapcss mailing list [email protected] https://lists.openstreetmap.org/listinfo/mapcss
