Re: Exceptions to assignment syntax [was: Re: labeltext assignment]

[Hans Hagen <pragma@wxs.nl>]

On 16-6-2012 15:19, Philipp Gesang wrote:
> Hi Hans!
>
> ···<date: 2012-06-12, Tuesday>···<from: Hans Hagen>···
>
>> On 12-6-2012 16:41, Philipp Gesang wrote:
>>
>>> I’ll be collecting candidates for the wiki page until saturday
>>> and then write up a draft, maybe submit it to the list for review
>>> first. I can draw up a preliminary list first so you can have a
>>> look at it.
>>
>> next week is ok
>
> Here’s some pre-alpha draft version with some links I collected:
>    https://gist.github.com/2941284
> (The gist is auto-converted; use the “raw” or “edit” buttons to
> view the code. The content of <texcode> is messed up in the
> output.)
>
> Unfortunately I won’t be able to complete it this weekend as I
> planned to, because Reality™ demands that I spend my time on
> paperwork instead.

palets ... the trailing comma is actually an error but anyway we can have:

\def\colo_palets_define_one#1#2% get rid of { }
   {\doifassignmentelse{#2} % catch empty entries
      {\colo_palets_define_two{#1}[#2]}
      {\colo_palets_define_three{#1}{#2}}}

\def\colo_palets_define_three#1#2%
   {\ifcsname\??colorpaletspecification#2\endcsname
 
\processcommacommand[\csname\??colorpaletspecification#2\endcsname]{\colo_palets_define_one{#1}}%
    \fi}

which then also supports:

\setupcolors [x11]

\definepalet [colorful] [primary=green]

\definepalet [bleak] [primary=darkgray,colorful]

\starttext
     \setuppalet [colorful]
     \color[primary]{Ain’t I a colorful entity?}
     \setuppalet [bleak]
     \color[primary]{Ain’t I a colorful entity?}
\stoptext

i.e. a hidden feature of referencing to already defined palets.

Hans

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