Thomas Davie wrote:
The mapCSS 0.2 wiki page states that we may not write
relation[type=route]
way[highway]
{ stroke-color: red; }
as
relation [type=route]
way [highway]
{ stroke-color: red; }
I see no reason why allowing this would make the grammar ambiguous, and
disallowing it makes the grammar significantly more complex (we can't
simply ignore whitespace tokens any more, and have to pollute every
grammar rule with whitspace? between pretty much all tokens).
What's the reason for this restriction?
The reason for this is to comply with css. Try the following snippet:
<style type="text/css">
p [lang=en] { color: purple; }
</style>
<p lang="en">normal text</p>
<p>text <span lang="en">in purple</span></p>
The browser will consider [lang=en] to be a shortcut for *[lang=en] and make
everything purple that has the lang=en property and is descendent of a <p>
element.
Sebastian
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