Reference to a subitem

Reference to a subitem

[Diego Depaoli]

Hi all,
referencing a subitem I get also the item (1.a, 2.c and so on).
Can I split them or get only the subitem?

\starttext
\startitemize [n]
\item [number] one
\startitemize  [a]
\item [letter] letter
\stopitemize
\stopitemize
Look at number \in[number] letter \in[letter]
\stoptext

Normal output:
Look at number 1 letter 1.a

Wanted result
Look at number 1 letter a

Many thanks

-- 
Diego Depaoli
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Re: Reference to a subitem

[Wolfgang Schuster]

On Thu, Oct 23, 2008 at 12:55 AM, Diego Depaoli <trebestie@gmail.com> wrote:
> Hi all,
> referencing a subitem I get also the item (1.a, 2.c and so on).
> Can I split them or get only the subitem?
>
> \starttext
> \startitemize [n]
> \item [number] one
> \startitemize  [a]
> \item [letter] letter
> \stopitemize
> \stopitemize
> Look at number \in[number] letter \in[letter]
> \stoptext
>
> Normal output:
> Look at number 1 letter 1.a
>
> Wanted result
> Look at number 1 letter a

\def\ItemNumber#1%
 {\expandafter\doItemNumber#1..\relax}

\def\doItemNumber#1.#2.#3\relax
 {\doifelsenothing{#2}
    {#1}
    {#2}}

\definereferenceformat[initem][left=\ItemNumber]

\starttext
\startitemize[n]
\item[number] one
  \startitemize  [a]
  \item[letter] letter
  \stopitemize
\stopitemize
Look at \initem{number}[number] \initem{letter}[letter]
\stoptext

Regards,
Wolfgang
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Re: Reference to a subitem

[Diego Depaoli]

2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
>>
>> Wanted result
>> Look at number 1 letter a
>
> \def\ItemNumber#1%
>  {\expandafter\doItemNumber#1..\relax}
As usual, Wolfgang solved!

Mojca, can I have a Context t-shirt customized 'Wolfgang's fan club'?

-- 
Diego Depaoli
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Re: Reference to a subitem

[Diego Depaoli]

2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
>
> \def\ItemNumber#1%
>  {\expandafter\doItemNumber#1..\relax}
>
> \def\doItemNumber#1.#2.#3\relax
>  {\doifelsenothing{#2}
>    {#1}
>    {#2}}
>
> \definereferenceformat[initem][left=\ItemNumber]
Since I don't speak that language, someone could explain why this code
doesn't work when I put a stopper in subitemization?
The standard dot isn't a stopper itself?

Cheers
-- 
Diego Depaoli
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Re: Reference to a subitem

[Marcin Borkowski]

Dnia Sat, Oct 25, 2008 at 02:58:24AM +0200, Diego Depaoli napisał(a):
> 2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
> >
> > \def\ItemNumber#1%
> >  {\expandafter\doItemNumber#1..\relax}
> >
> > \def\doItemNumber#1.#2.#3\relax
> >  {\doifelsenothing{#2}
> >    {#1}
> >    {#2}}
> >
> > \definereferenceformat[initem][left=\ItemNumber]
> Since I don't speak that language, someone could explain why this code
> doesn't work when I put a stopper in subitemization?
> The standard dot isn't a stopper itself?

This code seems to work (approximately) like this: it expands the "full"
reference, which is:
<number> <dot> <number> <dot> <something, probably space>
and selects "everything from the first dot up to the second one (w/o the
dots themselves).  So I consider it to be a bit dirty hack (sorry,
Wolfgang;)), in a sense that it is not very flexible.

If your stopper is, say ")" (and the second one, say, "]", so you have
references in a strange form like "1)2]"), you might want to say
something like
\def\doItemNumber #1)#2]#3\relax
(the space after \doItemNumber is gobbled by TeX, so it might be present
here or not, it is a matter of taste only).
If you have different stoppers, another approach might be reasonable.  I
can see two possibilities:
1. Get to know _where_ ConTeXt really keeps the relevant info about
labels; if the info about the values (w/o stoppers) is preserved, we are
saved, if not, we've got a problem;
2. so in the latter case we have to (?) use this kind of hacky solution,
which might be something like this (assuming that \stopper and \stopperr
are the first- and second level stoppers respectively):

\edef\sometemporarymacroname{%
  \def\noexpand\doItemNumber ##1\stopper ##2\stopperr ##3\relax
  {\noexpand\doifelsenothing{##2}
    {##1}
    {##2}}%
}%
\sometemporarymacroname

(I'm not sure whether the last percentage sign is needed, but a good
rule of thumb is to put them everywhere after <closing brace> <newline>,
so that the newlines don't get translated into spaces.)

I'm not sure whether this works, though, *please* check it and tell me
(maybe I'm doing some stupid error, please the TeX gurus correct me if
yes).  I hope this is ok, though, because then it my first post to this
list containing actually an _answer_ and not a _question_:))).

> 
> Cheers
> -- 
> Diego Depaoli

Greets

-- 
Marcin Borkowski (http://mbork.pl)

Kim jest ta, co wyłania się z pustyni,
Idzie wsparta na swoim Oblubieńcu?
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Re: Reference to a subitem

[Hans Hagen]

Diego Depaoli wrote:
> 2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
>> \def\ItemNumber#1%
>>  {\expandafter\doItemNumber#1..\relax}
>>
>> \def\doItemNumber#1.#2.#3\relax
>>  {\doifelsenothing{#2}
>>    {#1}
>>    {#2}}
>>
>> \definereferenceformat[initem][left=\ItemNumber]
> Since I don't speak that language, someone could explain why this code
> doesn't work when I put a stopper in subitemization?
> The standard dot isn't a stopper itself?

in mkiv this will be done differently, more control over each bit and piece

Hans


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Re: Reference to a subitem

[Wolfgang Schuster]

2008/10/25 Marcin Borkowski <mbork@atos.wmid.amu.edu.pl>:
> Dnia Sat, Oct 25, 2008 at 02:58:24AM +0200, Diego Depaoli napisa&#322;(a):
>> 2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
>> >
>> > \def\ItemNumber#1%
>> >  {\expandafter\doItemNumber#1..\relax}
>> >
>> > \def\doItemNumber#1.#2.#3\relax
>> >  {\doifelsenothing{#2}
>> >    {#1}
>> >    {#2}}
>> >
>> > \definereferenceformat[initem][left=\ItemNumber]
>> Since I don't speak that language, someone could explain why this code
>> doesn't work when I put a stopper in subitemization?
>> The standard dot isn't a stopper itself?
>
> This code seems to work (approximately) like this: it expands the "full"
> reference, which is:
> <number> <dot> <number> <dot> <something, probably space>
> and selects "everything from the first dot up to the second one (w/o the
> dots themselves).  So I consider it to be a bit dirty hack (sorry,
> Wolfgang;)), in a sense that it is not very flexible.

It's just hack at user level, a dirty hack would redefine core macros but
this is what I try to avoid.

> If your stopper is, say ")" (and the second one, say, "]", so you have
> references in a strange form like "1)2]"), you might want to say
> something like
> \def\doItemNumber #1)#2]#3\relax
> (the space after \doItemNumber is gobbled by TeX, so it might be present
> here or not, it is a matter of taste only).
> If you have different stoppers, another approach might be reasonable.  I
> can see two possibilities:
> 1. Get to know _where_ ConTeXt really keeps the relevant info about
> labels; if the info about the values (w/o stoppers) is preserved, we are
> saved, if not, we've got a problem;
> 2. so in the latter case we have to (?) use this kind of hacky solution,
> which might be something like this (assuming that \stopper and \stopperr
> are the first- and second level stoppers respectively):
>
> \edef\sometemporarymacroname{%
>  \def\noexpand\doItemNumber ##1\stopper ##2\stopperr ##3\relax
>  {\noexpand\doifelsenothing{##2}
>    {##1}
>    {##2}}%
> }%
> \sometemporarymacroname
>
> (I'm not sure whether the last percentage sign is needed, but a good
> rule of thumb is to put them everywhere after <closing brace> <newline>,
> so that the newlines don't get translated into spaces.)

You don't need the comment sign at the end of the macro in outer level
but you need it for local definitons in other macros if your're in
horizontal mode.

> I'm not sure whether this works, though, *please* check it and tell me
> (maybe I'm doing some stupid error, please the TeX gurus correct me if
> yes).  I hope this is ok, though, because then it my first post to this
> list containing actually an _answer_ and not a _question_:))).

Thanks to explain my solution.

Wolfgang
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___________________________________________________________________________________

Re: Reference to a subitem

[Diego Depaoli]

2008/10/25 Marcin Borkowski <mbork@atos.wmid.amu.edu.pl>:
> Dnia Sat, Oct 25, 2008 at 02:58:24AM +0200, Diego Depaoli napisa&#322;(a):
> This code seems to work (approximately) like this: it expands the "full"
> reference, which is:
> <number> <dot> <number> <dot> <something, probably space>
> and selects "everything from the first dot up to the second one (w/o the
> dots themselves).  So I consider it to be a bit dirty hack (sorry,
> Wolfgang;)), in a sense that it is not very flexible.
Thanks for clarification, here I begin to understand

> If your stopper is, say ")" (and the second one, say, "]", so you have
> references in a strange form like "1)2]"), you might want to say
> something like
> \def\doItemNumber #1)#2]#3\relax
mmmm... I tried before posting... doesn't work

> \edef\sometemporarymacroname{%
>  \def\noexpand\doItemNumber ##1\stopper ##2\stopperr ##3\relax
>  {\noexpand\doifelsenothing{##2}
>    {##1}
>    {##2}}%
> }%
> \sometemporarymacroname
Here I stop understand and I can't get this code working.
Could you give me a full example?

> I'm not sure whether this works, though, *please* check it and tell me
> (maybe I'm doing some stupid error, please the TeX gurus correct me if
> yes).  I hope this is ok, though, because then it my first post to this
> list containing actually an _answer_ and not a _question_:))).
This time will never come for me.

Cheers
-- 
Diego Depaoli
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___________________________________________________________________________________

Re: Reference to a subitem

[Diego Depaoli]

Another curiosity...
why have such kind of reference since we get more flexibility with
\in[item]\in[subitem]?
-- 
Diego Depaoli
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Re: Reference to a subitem

[Marcin Borkowski]

Dnia Mon, Oct 27, 2008 at 10:56:32AM +0100, Wolfgang Schuster napisał(a):
> 2008/10/25 Marcin Borkowski <mbork@atos.wmid.amu.edu.pl>:
> > Dnia Sat, Oct 25, 2008 at 02:58:24AM +0200, Diego Depaoli napisa&#322;(a):
> >> 2008/10/23 Wolfgang Schuster <schuster.wolfgang@googlemail.com>:
> >> >
> >> > \def\ItemNumber#1%
> >> >  {\expandafter\doItemNumber#1..\relax}
> >> >
> >> > \def\doItemNumber#1.#2.#3\relax
> >> >  {\doifelsenothing{#2}
> >> >    {#1}
> >> >    {#2}}
> >> >
> >> > \definereferenceformat[initem][left=\ItemNumber]
> >> Since I don't speak that language, someone could explain why this code
> >> doesn't work when I put a stopper in subitemization?
> >> The standard dot isn't a stopper itself?
> >
> > This code seems to work (approximately) like this: it expands the "full"
> > reference, which is:
> > <number> <dot> <number> <dot> <something, probably space>
> > and selects "everything from the first dot up to the second one (w/o the
> > dots themselves).  So I consider it to be a bit dirty hack (sorry,
> > Wolfgang;)), in a sense that it is not very flexible.
> 
> It's just hack at user level, a dirty hack would redefine core macros but
> this is what I try to avoid.

OK, sorry - probably we have different semantics of "dirty" (or, more
probably, we're talking about different "levels" of dirtiness).  Here I
meant roughly that this hack is not very flexible.

> > If your stopper is, say ")" (and the second one, say, "]", so you have
> > references in a strange form like "1)2]"), you might want to say
> > something like
> > \def\doItemNumber #1)#2]#3\relax
> > (the space after \doItemNumber is gobbled by TeX, so it might be present
> > here or not, it is a matter of taste only).
> > If you have different stoppers, another approach might be reasonable.  I
> > can see two possibilities:
> > 1. Get to know _where_ ConTeXt really keeps the relevant info about
> > labels; if the info about the values (w/o stoppers) is preserved, we are
> > saved, if not, we've got a problem;
> > 2. so in the latter case we have to (?) use this kind of hacky solution,
> > which might be something like this (assuming that \stopper and \stopperr
> > are the first- and second level stoppers respectively):
> >
> > \edef\sometemporarymacroname{%
> >  \def\noexpand\doItemNumber ##1\stopper ##2\stopperr ##3\relax
> >  {\noexpand\doifelsenothing{##2}
> >    {##1}
> >    {##2}}%
> > }%
> > \sometemporarymacroname
> >
> > (I'm not sure whether the last percentage sign is needed, but a good
> > rule of thumb is to put them everywhere after <closing brace> <newline>,
> > so that the newlines don't get translated into spaces.)
> 
> You don't need the comment sign at the end of the macro in outer level
> but you need it for local definitons in other macros if your're in
> horizontal mode.

Shame on me, being a mathematician and being sooo imprecise:):)

> > I'm not sure whether this works, though, *please* check it and tell me
> > (maybe I'm doing some stupid error, please the TeX gurus correct me if
> > yes).  I hope this is ok, though, because then it my first post to this
> > list containing actually an _answer_ and not a _question_:))).
> 
> Thanks to explain my solution.

You're welcome:).

> Wolfgang

Greets

-- 
Marcin Borkowski (http://mbork.pl)

Jeść.  Pić.  Spać.  Wstać.  Kupić.  Sprzedać.  Mieć.
Możesz więcej chcieć - czegoś więcej!
                        (40i30na70)
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Re: Reference to a subitem

[Marcin Borkowski]

Dnia Mon, Oct 27, 2008 at 05:24:56PM +0100, Diego Depaoli napisał(a):
> 2008/10/25 Marcin Borkowski <mbork@atos.wmid.amu.edu.pl>:
> > Dnia Sat, Oct 25, 2008 at 02:58:24AM +0200, Diego Depaoli napisa&#322;(a):
> > This code seems to work (approximately) like this: it expands the "full"
> > reference, which is:
> > <number> <dot> <number> <dot> <something, probably space>
> > and selects "everything from the first dot up to the second one (w/o the
> > dots themselves).  So I consider it to be a bit dirty hack (sorry,
> > Wolfgang;)), in a sense that it is not very flexible.
> Thanks for clarification, here I begin to understand
> 
> > If your stopper is, say ")" (and the second one, say, "]", so you have
> > references in a strange form like "1)2]"), you might want to say
> > something like
> > \def\doItemNumber #1)#2]#3\relax
> mmmm... I tried before posting... doesn't work

Could you please send me a minimal example?

> > \edef\sometemporarymacroname{%
> >  \def\noexpand\doItemNumber ##1\stopper ##2\stopperr ##3\relax
> >  {\noexpand\doifelsenothing{##2}
> >    {##1}
> >    {##2}}%
> > }%
> > \sometemporarymacroname
> Here I stop understand and I can't get this code working.
> Could you give me a full example?

As above; send me a file, I'll try to do something.  Still, I'm not
really sure this would work, it was only a rough idea.  I'll explain it
later (it's 1:30 AM here in Poland;)).

> > I'm not sure whether this works, though, *please* check it and tell me
> > (maybe I'm doing some stupid error, please the TeX gurus correct me if
> > yes).  I hope this is ok, though, because then it my first post to this
> > list containing actually an _answer_ and not a _question_:))).
> This time will never come for me.

If you follow the path of TeX, your expertise will gradually rise;).
You'll never notice, though, until people start coming to you asking
questions, and will be baffled by your expert-like,
impossible-to-understand-and-technical answers;).

> Cheers
> -- 
> Diego Depaoli

Greets

-- 
Marcin Borkowski (http://mbork.pl)

- Gandalf!  A ja myślałem, że nie żyjesz.  Co prawda o sobie też byłem
tego zdania.
				Sam Gamgee
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