[NTG-context] why does not this style work?

[Zhichu Chen]

Hi Ruini,

Since \dosanhao has nothing to do with it's argument, why not just define like
\def\mybig
  {\switchtobodyfont[24pt]}

On Sun, Oct 26, 2008 at 3:55 PM, Ruini Xue <xueruini at gmail.com> wrote:
> I want to use a dedicated font size for the chapter title, so I wrote this
> piece of code:
>
> %%%%%%%%%%%%%%%%%%
> \def\mybig%
>  {\dosingleempty\dosanhao}
> \def\dosanhao[#1]%
>  {\switchtobodyfont[24pt]}
>
> \setuphead
>   [chapter]
>   [style=\mybig]
>
> \starttext
> \chapter{hello, world}
>
> \stoptext
> %%%%%%%%%%%%%%%%%
>
> However, the error is:
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> ! Use of \dosanhao doesn't match its definition.
> \doifnextcharelse ...token =#1\def \!!stringa {#2}
>                                                  \def \!!stringb {#3}\futur...
> \@@kochapterstyle ->\mybig
>                           \bf
> \doconvertfont #1->\edef \p!defined {#1
>                                       }\ifx \p!defined \empty \else \@EA \d...
> \dosetfontattribute ...me #1#2\@EA \endcsname \fi
>                                                  \empty
> \doplaceheadnumbertext ...bute {\??ko #1}\c!style
>                                                  \dosetcolorattribute {\??k...
> \dodododoconstructhead ...{\finalsectionnumber }}}
>                                                  \writesection {#1}{#3}{#4}...
> l.11 \chapter{hello, world}
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>
> If I replace the \mybig with \switchtobodyfont in style=xx, it works fine.
> What's the difference between  them? and why the former does not work?
>
> -- ruini
>
>
>
>
>
>
>
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-- 
Best Regards
Chen
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