* system macros/doquadrupleemtpy
@ 2008-09-03 14:41 Thomas A. Schmitz
2008-09-03 16:58 ` Aditya Mahajan
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Thomas A. Schmitz @ 2008-09-03 14:41 UTC (permalink / raw)
To: mailing ConTeXt users list for
Hi all,
I'm trying to define a macro \Command which can either have four or
five arguments. If it has five, I want to define them as
\Command1[#1][#2][#3][#4]{#5}
if it has four, as
\Command2[#1][#2][#3]{4#}
I thought this would be the way to go:
\def\Command{%
\doquadrupleempty\doCommand}
\def\doCommand{%
\iffifthargument%
\doquadrupleargument\Command1%
\else%
\dotripleargument\Command2%
\fi}
but that gives me errors about "too many }s". So I'm wondering: am I
on the wrong track? Can this be done at all?
Thanks, and best
Thomas
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* Re: system macros/doquadrupleemtpy
2008-09-03 14:41 system macros/doquadrupleemtpy Thomas A. Schmitz
@ 2008-09-03 16:58 ` Aditya Mahajan
2008-09-04 7:39 ` Thomas A. Schmitz
2008-09-03 18:32 ` Peter Rolf
2008-09-04 6:45 ` Wolfgang Schuster
2 siblings, 1 reply; 6+ messages in thread
From: Aditya Mahajan @ 2008-09-03 16:58 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Wed, 3 Sep 2008, Thomas A. Schmitz wrote:
> Hi all,
>
> I'm trying to define a macro \Command which can either have four or
> five arguments. If it has five, I want to define them as
>
> \Command1[#1][#2][#3][#4]{#5}
>
> if it has four, as
>
> \Command2[#1][#2][#3]{4#}
>
> I thought this would be the way to go:
>
> \def\Command{%
> \doquadrupleempty\doCommand}
You need something with possibly five arguments so you should use quint
rather than quad:
\def\Command%
{\doquintupleargument\doCommand}
> \def\doCommand{%
> \iffifthargument%
> \doquadrupleargument\Command1%
> \else%
> \dotripleargument\Command2%
> \fi}
The usual way is
\def\doCommand[#1][#2][#3][#4][#5]%
{\doifelsenothing{#5}%See below
{\Command1[#1][#2][#3][#4][#5]}
{\Command2[#1][#2][#3][#4]}}
I use \doifelsenothing rather than \doiffirthargument. If I give
\Command[...][...][...][...][] with \doifelsenothing \Commnad2 will be
called while with \iffifthargument \Command1 will be called. Use whichever
is more appropriate for your problem.
> but that gives me errors about "too many }s". So I'm wondering: am I
> on the wrong track? Can this be done at all?
The above code is untested, but I am pretty sure that it will work.
Aditya
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* Re: system macros/doquadrupleemtpy
2008-09-03 14:41 system macros/doquadrupleemtpy Thomas A. Schmitz
2008-09-03 16:58 ` Aditya Mahajan
@ 2008-09-03 18:32 ` Peter Rolf
2008-09-04 6:45 ` Wolfgang Schuster
2 siblings, 0 replies; 6+ messages in thread
From: Peter Rolf @ 2008-09-03 18:32 UTC (permalink / raw)
To: mailing list for ConTeXt users
Thomas A. Schmitz schrieb:
> Hi all,
>
> I'm trying to define a macro \Command which can either have four or
> five arguments. If it has five, I want to define them as
>
> \Command1[#1][#2][#3][#4]{#5}
>
> if it has four, as
>
> \Command2[#1][#2][#3]{4#}
>
> I thought this would be the way to go:
>
> \def\Command{%
> \doquadrupleempty\doCommand}
>
> \def\doCommand{%
> \iffifthargument%
> \doquadrupleargument\Command1%
> \else%
> \dotripleargument\Command2%
> \fi}
>
> but that gives me errors about "too many }s". So I'm wondering: am I
> on the wrong track? Can this be done at all?
>
Hi Thomas!
Hard to say for me whats wrong, but I think its a bad idea to use such
optional parameter commands in a nested way. Also there is no need for a
second parameter number check.
How about something like
\def\doCommand%
{\iffifthargument
\CommandA[#1][#2][#3][#4]{#5}%
\else\iffourthargument
\CommandB[#1][#2][#3]{#4}%
\else
% some error handling
\fi
\fi}
Best wishes, Peter
> Thanks, and best
>
> Thomas
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
>
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___________________________________________________________________________________
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* Re: system macros/doquadrupleemtpy
2008-09-03 14:41 system macros/doquadrupleemtpy Thomas A. Schmitz
2008-09-03 16:58 ` Aditya Mahajan
2008-09-03 18:32 ` Peter Rolf
@ 2008-09-04 6:45 ` Wolfgang Schuster
2008-09-04 8:21 ` Thomas A. Schmitz
2 siblings, 1 reply; 6+ messages in thread
From: Wolfgang Schuster @ 2008-09-04 6:45 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Wed, Sep 3, 2008 at 4:41 PM, Thomas A. Schmitz
<thomas.schmitz@uni-bonn.de> wrote:
> Hi all,
>
> I'm trying to define a macro \Command which can either have four or
> five arguments. If it has five, I want to define them as
>
> \Command1[#1][#2][#3][#4]{#5}
>
> if it has four, as
>
> \Command2[#1][#2][#3]{4#}
>
> I thought this would be the way to go:
>
> \def\Command{%
> \doquadrupleempty\doCommand}
>
> \def\doCommand{%
> \iffifthargument%
> \doquadrupleargument\Command1%
> \else%
> \dotripleargument\Command2%
> \fi}
>
> but that gives me errors about "too many }s". So I'm wondering: am I
> on the wrong track? Can this be done at all?
>
> Thanks, and best
>
> Thomas
\def\Commanda
{\doquadrupleempty\doCommanda}
\def\doCommanda[#1][#2][#3][#4]%
{\iffourthargument
\def\next{\doCommandafive[#1][#2][#3][#4]}%
\else
\def\next{\doCommandafour[#1][#2][#3]}%
\fi\next}
\def\doCommandafive[#1][#2][#3][#4]#5%
{five arguments}
\def\doCommandafour[#1][#2][#3]#4%
{four arguments}
\def\Commandb
{\doquadrupleempty\doCommandb}
\def\doCommandb[#1][#2][#3][#4]%
{\iffourthargument
\def\next{\dodoCommandb[#1][#2][#3][#4]}%
\else
\def\next{\dodoCommandb[#1][#2][#3][]}%
\fi\next}
\def\dodoCommandb[#1][#2][#3][#4]#5%
{\doifelsenothing{#4}
{four arguments}
{five arguments}}
\starttext
\Commanda[1][2][3][4]{5}
\Commanda[1][2][3]{4}
\Commandb[1][2][3][4]{5}
\Commandb[1][2][3]4
\Commandb[1][2][3][]{4} % feature
\stoptext
Wolfgang
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* Re: system macros/doquadrupleemtpy
2008-09-03 16:58 ` Aditya Mahajan
@ 2008-09-04 7:39 ` Thomas A. Schmitz
0 siblings, 0 replies; 6+ messages in thread
From: Thomas A. Schmitz @ 2008-09-04 7:39 UTC (permalink / raw)
To: mailing list for ConTeXt users
Aditya, Peter,
as always, thanks a lot for your help. Peter, you're certainly right
that it's difficult to diagnose my problem - I'm sending only
snippets, no example. But it's a fairly complex thing here for my
presentation module and difficult to reduce in size.
On Sep 3, 2008, at 6:58 PM, Aditya Mahajan wrote:
> On Wed, 3 Sep 2008, Thomas A. Schmitz wrote:
>
>> Hi all,
>>
>> I'm trying to define a macro \Command which can either have four or
>> five arguments. If it has five, I want to define them as
>>
>> \Command1[#1][#2][#3][#4]{#5}
>>
>> if it has four, as
>>
>> \Command2[#1][#2][#3]{4#}
>>
>> I thought this would be the way to go:
>>
>> \def\Command{%
>> \doquadrupleempty\doCommand}
>
> You need something with possibly five arguments so you should use
> quint
> rather than quad:
>
> \def\Command%
> {\doquintupleargument\doCommand}
>
>> \def\doCommand{%
>> \iffifthargument%
>> \doquadrupleargument\Command1%
>> \else%
>> \dotripleargument\Command2%
>> \fi}
>
>
> The usual way is
>
> \def\doCommand[#1][#2][#3][#4][#5]%
> {\doifelsenothing{#5}%See below
> {\Command1[#1][#2][#3][#4][#5]}
> {\Command2[#1][#2][#3][#4]}}
>
> I use \doifelsenothing rather than \doiffirthargument. If I give
>
> \Command[...][...][...][...][] with \doifelsenothing \Commnad2 will be
> called while with \iffifthargument \Command1 will be called. Use
> whichever
> is more appropriate for your problem.
>
OK, that does make sense, but now I also see where my problem lies.
When I define
\doCommand[#1][#2][#3][#4]#5
and then have
\Command2[#1][#2][#3]#4
TeX picks up a closing bracket as #4. I suspect that my problem lies
in the definition \doCommand[#1][#2][#3][#4]#5 . The two definitions
don't match; when I look at \doCommand, the closing bracket is indeed
argument #4, from TeX's point of view. Maybe I need to reverse the
order of my arguments and make it
\doCommand#1[#2][#3][#4][#5] ?
but I'm not sure if this would play with quintupleempty...
Anyway, thanks a lot for your help. I'll look further into it and will
maybe come back with a real example later if I can't figure it out.
Thomas
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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* Re: system macros/doquadrupleemtpy
2008-09-04 6:45 ` Wolfgang Schuster
@ 2008-09-04 8:21 ` Thomas A. Schmitz
0 siblings, 0 replies; 6+ messages in thread
From: Thomas A. Schmitz @ 2008-09-04 8:21 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Sep 4, 2008, at 8:45 AM, Wolfgang Schuster wrote:
> \def\Commanda
> {\doquadrupleempty\doCommanda}
>
> \def\doCommanda[#1][#2][#3][#4]%
> {\iffourthargument
> \def\next{\doCommandafive[#1][#2][#3][#4]}%
> \else
> \def\next{\doCommandafour[#1][#2][#3]}%
> \fi\next}
>
> \def\doCommandafive[#1][#2][#3][#4]#5%
> {five arguments}
>
> \def\doCommandafour[#1][#2][#3]#4%
> {four arguments}
>
>
> \def\Commandb
> {\doquadrupleempty\doCommandb}
>
> \def\doCommandb[#1][#2][#3][#4]%
> {\iffourthargument
> \def\next{\dodoCommandb[#1][#2][#3][#4]}%
> \else
> \def\next{\dodoCommandb[#1][#2][#3][]}%
> \fi\next}
>
> \def\dodoCommandb[#1][#2][#3][#4]#5%
> {\doifelsenothing{#4}
> {four arguments}
> {five arguments}}
>
> \starttext
>
> \Commanda[1][2][3][4]{5}
>
> \Commanda[1][2][3]{4}
>
> \Commandb[1][2][3][4]{5}
>
> \Commandb[1][2][3]4
>
> \Commandb[1][2][3][]{4} % feature
>
> \stoptext
>
> Wolfgang
YES! That's the end of my suffering!! Thanks a lot, Wolfgang, you're
my hero. Makes sense, too, now that I look at it. Now I'm gonna find
out what \next does...
Thanks!
Thomas
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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2008-09-03 14:41 system macros/doquadrupleemtpy Thomas A. Schmitz
2008-09-03 16:58 ` Aditya Mahajan
2008-09-04 7:39 ` Thomas A. Schmitz
2008-09-03 18:32 ` Peter Rolf
2008-09-04 6:45 ` Wolfgang Schuster
2008-09-04 8:21 ` Thomas A. Schmitz
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