[josm-dev] JOSM rendering improvements the last days - I'm guilty!

[Dirk Stöcker]

On Mon, 4 Aug 2008, Ulf Lamping wrote:

>> Ok. Now two new options exist:
>> a) replace k= by b= to make a boolean test (like also done e.g. in preset
>> tester and other places).
>> b) remove k= and b= totally to test against existence of the key.
>>
>> I changed the first part of the styles/standard/elemstyles.xml to
>> introduce this new features, but left the remaining parts unmodified (I
>> don't want to break anything :-)
>>
>>
> a) You mean replace v by b, right? That would be the way to go IMHO.

Yes.

> b) You mean remove k and v totally, right? I don't like that thing, as
> the existance of the key and if it's yes, true, 1, ... is really a
> different thing.

Yes. It is. That's why I implemented both :)

When you replace v by b, you do a boolean test (means essentially all 
boolean type values are handled as "yes" or "no". Non-boolean values are 
handled as they are -- thus ... k="highway" b="secondary" ... would work 
also (as secondary is not boolean), but this is only a side effect and 
should not be used.

When you remove v or b totally, you test for existence of a key. This will 
be useful in seldom cases (I found one -- oneway attribute for nodes :-)

Ciao
-- 
http://www.dstoecker.eu/ (PGP key available)