defineitemgroup interferes with item reference

defineitemgroup interferes with item reference

[Sanjoy Mahajan]

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

-Sanjoy

`Until lions have their historians, tales of the hunt shall always
 glorify the hunters.'  --African Proverb
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___________________________________________________________________________________

Re: defineitemgroup interferes with item reference

[Hans Hagen]

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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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: defineitemgroup interferes with item reference

[Sanjoy Mahajan]

Hans Hagen <pragma@wxs.nl> wrote:

> itemgroups cannot be miced

Though there's no problem without those references in [brackets], so the
mixing works most of the time anyway.

> this catches it

Thanks!  With two small changes, your definition makes the mixing work
even when using references.  The two changes: (1) the macro needed a
closing brace, and (2) there's no \currentitemlevel in any context
source file so I guessed that \itemlevel was the intention.  So:

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

Is this macro worth putting into the official distribution or is it a
special hack to keep with my documents that need it?

-Sanjoy

`Until lions have their historians, tales of the hunt shall always
 glorify the hunters.'  --African Proverb
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: defineitemgroup interferes with item reference

[Aditya Mahajan]

Hi Sanjoy,

On Sat, 3 May 2008, Sanjoy Mahajan wrote:

> closing brace, and (2) there's no \currentitemlevel in any context
> source file so I guessed that \itemlevel was the intention.  So:

Are you using an old version of ConTeXt?

http://source.contextgarden.net/?search=currentitemlevel

Aditya
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___________________________________________________________________________________

Re: defineitemgroup interferes with item reference

[Sanjoy Mahajan]

Aditya Mahajan <adityam@umich.edu> wrote:
> Are you using an old version of ConTeXt?

Version 2008.01.28 from Norbert's latest packages for Debian unstable.
I can upgrade to 2008.04.27 by hand, but my TeX life has become so
sipmle since using Norbert's packages that I may let laziness triumph.

> http://source.contextgarden.net/?search=currentitemlevel

Thanks for the useful link.

In case it is useful for others: To search my local installation, I do:

  find /usr/share/texmf/tex/context -name '*.tex' \
    | xargs grep -n '\\currentitemlevel'

-Sanjoy

`Until lions have their historians, tales of the hunt shall always
 glorify the hunters.'  --African Proverb
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________