Re: [Boost-docs] [Gaea] Named optional attributes

Subject: Re: [Boost-docs] [Gaea] Named optional attributes
From: Joel de Guzman (joel_at_[hidden])
Date: 2011-10-31 12:16:19

On 10/30/2011 9:39 PM, Matias Capeletto wrote:
> Hi,
> 
> I was trying to see how some of the current Quickbook constructs will
> look in the IR Joel is proposing based on Gaea (
> http://pastebin.com/FBdpSsS8 ).
> There are some things that are not possible with that definition and
> seems to be necessary to represent complete documents.
>>From Quickbook docs: "From version 1.5, you can also use DocBook
> imagedata attributes"
> 
>   [$image.jpg [width 200in] [height 200in]]
> 
> I think it will be a good idea to support this kind of named optional
> attributes directly in Gaea. If we augment the definition of templates
> like:
> 
>   [def [$ path [.width] [.height]]
>   ... [path]
>   ... [if [defined [width]] [ ...[width]... ] [ ... ]] // Or something
> like this...
>   ]
> 
> We can then use them like:
> 
>   [$image.jpg [.width 200in][.height 200in]]
> 
> This is very close to the current [$ ...] and even the main argument
> can remain unwrapped in []s, following current practice.
> 
[snip]

I think this makes perfect sense. I'll see how I can incorporate
these.

Regards,
-- 
Joel de Guzman
http://www.boostpro.com
http://boost-spirit.com