[Mapcss] MapCSS and LESS

Steve Bennett stevagewp at gmail.com
Tue Jul 17 04:11:38 BST 2012

On Sat, Jul 14, 2012 at 3:11 AM, Jonathan Bennett
<openstreetmap at jonno.cix.co.uk> wrote:
> There's a lot in common with some features that have been suggested
> and/or implemented in MapCSS (eval, nested rules, pseudo-classes) and
> what Less provides for web CSS. What does everyone think (in general
> terms) of incorporating Less into MapCSS instead of recreating most of
> its features independently?

Ok, from my quick perusal (http://lesscss.org), it's a javascript
script which converts enhanced CSS into normal CSS. You can run it
either client-side or server-side (with NodeJS).

- how many MapCSS implementations don't have access to a JavaScript interpreter?
- can Less cope with MapCSS, or would it need to be modified?
- if you're talking about simply using (then modifying) the code
(Apache 2.0 licence), will this cause licence issues for anyone?
- are there alternative libraries to consider?
- if there is a Less feature duplicated by an existing, implemented
MapCSS feature, are you proposing deprecating/removing the existing

My instinctive reaction is to be cautious - this could add a lot of
extra expressive complexity, especially when Less features are similar
to existing ones.


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