Sanjoy Mahajan wrote:
> I cannot figure out the error in the following nested itemization with a
> reference.  Is it a bug or am I overlooking something?  Here is the
> smallest example I could make.  Strangely, if I change the
> startproblemlist to startitemize and stopproblemlist to stopitemize, all
> is well.
> 
> \defineitemgroup[problemlist]
> \starttext
> \startproblemlist
> \item Drag
> \startitemize
> \item[ref] blah
> \stopitemize
> \stopproblemlist
> \stoptext
> 
> I'm using context 2008.01.28 21:28 (mkii), Debian GNU/Linux 'unstable'
> for i386, and the 2008.04.27 version on the Garden gives the same error.
> The error is
> 
> ! Undefined control sequence.
> <write> ...realfolio }{\relax \@@opitemizesymbol1 
>                                                   \relax .?}
> <inserted text> 
>                 }\endwrite 
> \actualshipout ... \box \postponedcontent \box 0}}
>                                                   \else \message 
> {[\ifarrang...
> 
> \myshipout ... \fi {\thisisrealpage \realfolio #1}
>                                                   \gotonextrealpage 
> \aftersh...
> 
> \dofinaloutput ...agebody #1#2\setpagecounters }}}
>                                                   \fi \the 
> \everyaftershipou...
> 
> \finaloutput ...EAEAEA \dofinaloutput \fi \fi #1#2
>                                                   \resetselectiepagina 
> \incr...
> ....
> l.14 \stoptext

itemgroups cannot be miced; this catches it

\def\dostartitemgroup[#1][#2][#3]%
   {\bgroup
    \ifnum\currentitemlevel=\zerocount
      \def\currentitemgroup{#1}% no nested mixing of itemgroups
    \fi
    \ifthirdargument
      \dodostartitemgroup[#2][#3]%
    \else
      \doifassignmentelse{#2}
        {\dodostartitemgroup[][#2]}
        {\dodostartitemgroup[#2][]}%


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