Re: [dev-context] minor problem with utf-8 inside \startintertext

9 Mar 2007

      On Fri, 9 Mar 2007, Aditya Mahajan wrote:
...
On Fri, 9 Mar 2007, Mojca Miklavec wrote:
...
Hello,
I have something for (most probably) Hans/Taco/Aditya to resolve:
\enableregime[utf-8]
\starttext
\startformula\startalign
  \NC a \NC = b \NR
\startintertext
Še četrta možnost
%
For those with problems with encoding, \ccaron should be enough to
reproduce the bug.
\stopintertext
  \NC c \NC = d \NR
\stopalign\stopformula
\stoptext
Hmm... strange. Basically, this boils down to
\enableregime[utf-8]
 \starttext
 \startformula\startalign
        \NC a \NC = b \NR
  \noalign{\vbox{\noindent \normal %Try with and without normal
    Še četrta možnost \par}}
  \NC c \NC = d \NR
 \stopalign\stopformula
 \stoptext
So, for the time being add \normal inside \startintertext. I do not
understand the cause, so I do not know if normal should be part of the
definition of \dointertext, or if there is a bigger problem.
I noticed that in TeXBook, Knuth does not use \vbox for intertext 
(example on page 193). I changed the definition of \dointertext and 
removed the vbox, and everything works fine.

\unexpanded\def\dointertext#1%
   {\penalty\postdisplaypenalty
    \afterdisplayspace
    {\forgetall\noindent#1\par}%
    \penalty\predisplaypenalty
    \beforedisplayspace}

This works correctly. THe present definition is a sanitized version of 
\intertext defined in amsmath, so the question is why do they use 
\vbox in the definition of \inertext, and is it really needed? That is 
beyond my understanding of TeX.

Aditya