setuphead command "! Argument of \xxx has an extra }."

[Jean-Philippe Rey <jean-philippe.rey@ecp.fr>]

Hi,

I am trying to use a homemade command to display chapter heads but I systematically get the following error:

! Argument of \ChapterHead has an extra }.

Here is my minimal example


\def\ChapterHead#1#2{#1 --- #2}
\setuphead[chapter][command=\ChapterHead]
\starttext
\chapter{Hello}
Some text
\stoptext


This example works fine with MKII and with the texlive 2012 version of MKIV (ConTeXt ver: 2012.05.30 11:26). It fails with the last beta (2013.01.24 16:47 MKIV) and also with 2012.11.22 14:55 MKIV.

I tried \setuphead[chapter][alternative=command,command=\ChapterHead]
and  \startchapter ... \stopchapter
but still get the same error.

You will find below the content of the log file produced by my minimal example.

Thanks for your help.




(/Users/jprey/ConTeXt-2013.01.24/tex/texmf-context/tex/context/base/cont-yes.mkiv

ConTeXt  ver: 2013.01.24 16:47 MKIV  fmt: 2013.1.25  int: english/english

system          > cont-new.mkiv loaded
(/Users/jprey/ConTeXt-2013.01.24/tex/texmf-context/tex/context/base/cont-new.mkiv
system          > beware: some patches loaded from cont-new.mkiv
)
system          > files > jobname: test-setuphead, input: test-setuphead, result: test-setuphead
fonts           > latin modern fonts are not preloaded
languages       > language en is active
(test-setuphead.tex{/Users/jprey/ConTeXt-2013.01.24/tex/texmf-context/fonts/map/pdftex/context/mkiv-base.map}
fonts           > preloading latin modern fonts (second stage)
fonts           > typescripts > unknown: library 'loc'
{/Users/jprey/ConTeXt-2013.01.24/tex/texmf/fonts/map/dvips/lm/lm-math.map}{/Users/jprey/ConTeXt-2013.01.24/tex/texmf/fonts/map/dvips/lm/lm-rm.map}
fonts           > fallback modern rm 12pt is loaded

% begin of command line arguments
%
% noarrange            = true
% input                = ./test-setuphead.tex
% fulljobname          = ./test-setuphead.tex
% currentrun           = 1
% no-parse-first-line  = true
% arrange              = true
% script               = true
% synctex              = true
% kindofrun            = 1
%
% end of command line arguments

% begin of command line files
%
% 1  ./test-setuphead.tex
%
% end of command line files

structure       > sectioning > chapter @ level 2: 0.1 -> Hello
! Argument of \ChapterHead has an extra }.

system          > tex > error on line 4 in file test-setuphead.tex: Argument of  ...

1     \def\ChapterHead#1#2{#1 --- #2}
2     \setuphead[chapter][command=\ChapterHead]
3     \starttext
4 >>  \chapter{Hello}
5     Some text
6     \stoptext
7     

<inserted text> 
                \par 
<to be read again> 
                   }
\strc_rendering_inject_number_and_text ...ommand }
                                                  \ifx \p_command \empty \di...
\strc_rendering_place_head_number_and_text ...ext 
                                                  }\fi \strc_rendering_stop_...
\strc_sectioning_handle ...e_head_number_and_text 
                                                  \else \strc_rendering_plac...
l.4 \chapter{Hello}
                   
? 
! Emergency stop.

system          > tex > error on line 4 in file test-setuphead.tex: Emergency stop ...

1     \def\ChapterHead#1#2{#1 --- #2}
2     \setuphead[chapter][command=\ChapterHead]
3     \starttext
4 >>  \chapter{Hello}
5     Some text
6     \stoptext
7     

<inserted text> 
                \par 
<to be read again> 
                   }
\strc_rendering_inject_number_and_text ...ommand }
                                                  \ifx \p_command \empty \di...
\strc_rendering_place_head_number_and_text ...ext 
                                                  }\fi \strc_rendering_stop_...
\strc_sectioning_handle ...e_head_number_and_text 
                                                  \else \strc_rendering_plac...
l.4 \chapter{Hello}
                   
End of file on the terminal!

!  ==> Fatal error occurred, no output PDF file produced!

-- 
Jean-Philippe Rey                 Professeur - École Centrale Paris
jean-philippe.rey@ecp.fr          92295 Châtenay-Malabry Cedex - France
Empreinte PGP : 807A 5B2C 69E4 D4B5 783A 428A 1B5E E83E 261B BF51




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