Re: [NTG-context] expansion problem with \getbuffer again (mkiv)

1 Oct 2009


      Peter Rolf wrote:
...
Hi,
the attached example works with mkii, but breaks with mkiv. Here is the 
error message I get (beta 28.09.2009):
systems         : begin file test at line 1
! Missing \endgroup inserted.
<inserted text>
               \endgroup
<to be read again>
                  \vskip
\stopblankhandling ...ional \someblankdone \vskip
                                                 \blankskip \fi \endgroup
l.3 \stopblankhandling
                    \dovspacing ...argument #1\else \s!default \fi ")}
                                                <to be read again>
                  \leavevmode
....
l.20 \setlayer[FOO]{\getbuffer[FOO]}
                                  ?
! Emergency stop.
<inserted text>
               \endgroup
<to be read again>
                  \vskip
\stopblankhandling ...ional \someblankdone \vskip
                                                 \blankskip \fi \endgroup
l.3 \stopblankhandling
                    \dovspacing ...argument #1\else \s!default \fi ")}
                                                <to be read again>
                  \leavevmode
....
l.20 \setlayer[FOO]{\getbuffer[FOO]}
                                  !  ==> Fatal error occurred, no output 
PDF file produced!MTXrun | run 1: luatex 
--fmt="r:/tex/texmf-cache/luatex-cache/context/d0b787cd25b9175dc4eaa276af366360/formats/cont-en" 
--lua="r:/tex/texmf-cache/luatex-cache/context/d0b787cd25b9175dc4eaa276af366360/formats/cont-en.lui" 
--backend=pdf "./test"
MTXrun | fatal error, return code: 1
here is a patch (can't update right now, in the middle of something else)

\def\startblankhandling
   {\par
    \ifvmode
      \expandafter\dostartblankhandling
    \else
      \expandafter\nostartblankhandling
    \fi}

\def\nostartblankhandling#1\stopblankhandling
   {}

\def\dostartblankhandling
   {\begingroup
    \setfalse\someblankdone
    \the\everybeforeblankhandling}


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