Re: [NTG-context] Indenting in \setuplines

5 Jun 2013

      Dnia 2013-06-03, o godz. 15:20:45
Marcin Borkowski  napisał(a):
...
Hi,
I'd like to have my \startlines ... \stoplines indented in the
following way: the first two lines unindented, the next two indented,
and so on.  Basically, this means that I'd like the pattern to be
based on (mod 4) arithmetic and not (mod 2).  Is it possible?  If
yes, how?
OK, so I thought I can handle this... but not:(.

I found the relevant definitions in spac-hor.mkiv and tried to add a
line saying

\installindentingmethod
\v!evenpairs{\c_spac_indentation_toggle_state\plusfour}

But after context --make I got an "Undefined control sequence."  Here's
an excerpt from the log information:

! Undefined control sequence.

system          > tex > error on line 108 in
file /home/marcin/context-2013-05-22-19-28/tex/texmf-context/tex/context/base/spac-hor.mkiv:
Undefined control sequence ...

 98     
 99     \installindentingmethod \v!yes
 {\parindent\d_spac_indentation_par\relax} % not \indent ! 100
 \installindentingmethod
 \v!always{\parindent\d_spac_indentation_par\relax} % not \indent ! 101
 102     \installindentingmethod \v!never
 {\parindent\zeropoint\relax     % no \indent !
 103
 \c_spac_indentation_toggle_state\zerocount} 104 105
 \installindentingmethod \v!odd
 {\c_spac_indentation_toggle_state\plusone} 106
 \installindentingmethod \v!even
 {\c_spac_indentation_toggle_state\plustwo} 107
 %\installindentingmethod \v!oddpairs
 {\c_spac_indentation_toggle_state\plusthree} 108 >>
 \installindentingmethod \v!evenpairs
 {\c_spac_indentation_toggle_state\plusfour} 109 110
 \installindentingmethod \v!normal{\ifx\normalindentation\empty\else
 111
 \let\v_spac_indentation_current\normalindentation
 112                                         \simplesetupindenting
 113                                       \fi} 114 115
 \installindentingmethod \v!reset
 {\settrue\c_spac_indentation_indent_first
 116                                       \parindent\zeropoint
 117
 \c_spac_indentation_toggle_state\zerocount} 118     

<argument> \??indentingmethod \v!evenpairs 

\setvalue #1?-\expandafter \def \csname #1
                                          \endcsname 
\installindentingmethod ...{\??indentingmethod #1}
                                                  {#2}
l.108 ...{\c_spac_indentation_toggle_state\plusfour}

What am I doing wrong?
...
TIA,
Best,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Adam Mickiewicz University