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Message-ID: <2cbbf3a5-27e5-4ce9-91f2-d52eebbeca8a@rik.users.panix.com>
Date: Wed, 16 Oct 2024 21:07:32 -0400
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 <95601b3f-d481-a307-ec4f-5226eebcebf4@gmail.com>
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From: Rik Kabel <ConTeXt@rik.users.panix.com>
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On 2024-10-16 17:48, Wolfgang Schuster wrote:
> Rik Kabel schrieb am 16.10.2024 um 23:18:
>> <stuff deleted for brevity in replying.>
>
> When you have argument after square brackets you have to use #: to=20
> continues scanning for arguments of the command. For the mandatory=20
> argument you should just use #2 and keep #=3D for the optional argument=
s=20
> which are only used when text enclosed in curly braces appears. The #*=20
> between the third and fourth argument allows spaces between them.
>
> %%%% begin example
> \tolerant\protected\def\Bi[#1]#:#2#*#=3D#*#=3D%
> =C2=A0 {(1=3D#1)%
> =C2=A0=C2=A0 (2=3D#2)%
> =C2=A0=C2=A0 (3=3D#3)%
> =C2=A0=C2=A0 (4=3D#4)}
>
> \starttext
>
> [\Bi[one]{two}{three}{four}]
>
> [\Bi [one] {two} {three} {four}]
>
> [\Bi [one] {two} {three}]
>
> [\Bi [one] {two}]
>
> [\Bi {two}]
>
> [\Bi [one] {two}]
>
> \stoptext
> %%%% end example
>
> To check whether a argument is empty or not you can use the=20
> \ifparameter command with the parameter to check (i.e. #1) as argument=20
> (don't forget the \or) but \doifempty etc. work as well.
>
> %%%% begin example
> \tolerant\protected\def\Bi[#1]#:#2#*#=3D#*#=3D%
> =C2=A0 {\ifparameter#1\or
> =C2=A0=C2=A0=C2=A0=C2=A0 First argument is used.
> =C2=A0=C2=A0 \else
> =C2=A0=C2=A0=C2=A0=C2=A0 First argument is missing or empty.
> =C2=A0=C2=A0 \fi}
>
> \starttext
>
> \Bi {bar}
>
> \Bi [] {bar}
>
> \Bi [foo] {bar}
>
> \stoptext
> %%%% end example
>
> Wolfgang
> _______________________________________________________________________=
____________=20
>
> If your question is of interest to others as well, please add an entry=20
> to the Wiki!
>
> maillist : ntg-context@ntg.nl /=20
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage=C2=A0 : https://www.pragma-ade.nl / https://context.aanhet.net=20
> (mirror)
> archive=C2=A0 : https://github.com/contextgarden/context
> wiki=C2=A0=C2=A0=C2=A0=C2=A0 : https://wiki.contextgarden.net
> _______________________________________________________________________=
____________=20
>

Excellent, and thank you for the explanation. I guess #? is still availab=
le.

(I had tried with #:, but not in combination with [#1] and #=3D for the=20
last parameter).

--=20
Rik

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-8">
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  <body>
    <p><br>
    </p>
    <div class=3D"moz-cite-prefix">On 2024-10-16 17:48, Wolfgang Schuster
      wrote:<br>
    </div>
    <blockquote type=3D"cite"
      cite=3D"mid:95601b3f-d481-a307-ec4f-5226eebcebf4@gmail.com">Rik
      Kabel schrieb am 16.10.2024 um 23:18:
      <br>
      <blockquote type=3D"cite">&lt;stuff deleted for brevity in
        replying.&gt;<br>
      </blockquote>
      <br>
      When you have argument after square brackets you have to use #: to
      continues scanning for arguments of the command. For the mandatory
      argument you should just use #2 and keep #=3D for the optional
      arguments which are only used when text enclosed in curly braces
      appears. The #* between the third and fourth argument allows
      spaces between them.
      <br>
      <br>
      %%%% begin example
      <br>
      \tolerant\protected\def\Bi[#1]#:#2#*#=3D#*#=3D%
      <br>
      =C2=A0 {(1=3D#1)%
      <br>
      =C2=A0=C2=A0 (2=3D#2)%
      <br>
      =C2=A0=C2=A0 (3=3D#3)%
      <br>
      =C2=A0=C2=A0 (4=3D#4)}
      <br>
      <br>
      \starttext
      <br>
      <br>
      [\Bi[one]{two}{three}{four}]
      <br>
      <br>
      [\Bi [one] {two} {three} {four}]
      <br>
      <br>
      [\Bi [one] {two} {three}]
      <br>
      <br>
      [\Bi [one] {two}]
      <br>
      <br>
      [\Bi {two}]
      <br>
      <br>
      [\Bi [one] {two}]
      <br>
      <br>
      \stoptext
      <br>
      %%%% end example
      <br>
      <br>
      To check whether a argument is empty or not you can use the
      \ifparameter command with the parameter to check (i.e. #1) as
      argument (don't forget the \or) but \doifempty etc. work as well.
      <br>
      <br>
      %%%% begin example
      <br>
      \tolerant\protected\def\Bi[#1]#:#2#*#=3D#*#=3D%
      <br>
      =C2=A0 {\ifparameter#1\or
      <br>
      =C2=A0=C2=A0=C2=A0=C2=A0 First argument is used.
      <br>
      =C2=A0=C2=A0 \else
      <br>
      =C2=A0=C2=A0=C2=A0=C2=A0 First argument is missing or empty.
      <br>
      =C2=A0=C2=A0 \fi}
      <br>
      <br>
      \starttext
      <br>
      <br>
      \Bi {bar}
      <br>
      <br>
      \Bi [] {bar}
      <br>
      <br>
      \Bi [foo] {bar}
      <br>
      <br>
      \stoptext
      <br>
      %%%% end example
      <br>
      <br>
      Wolfgang
      <br>
_________________________________________________________________________=
__________
      <br>
      If your question is of interest to others as well, please add an
      entry to the Wiki!
      <br>
      <br>
      maillist : <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:ntg=
-context@ntg.nl">ntg-context@ntg.nl</a> /
      <a class=3D"moz-txt-link-freetext" href=3D"https://mailman.ntg.nl/m=
ailman3/lists/ntg-context.ntg.nl">https://mailman.ntg.nl/mailman3/lists/n=
tg-context.ntg.nl</a>
      <br>
      webpage=C2=A0 : <a class=3D"moz-txt-link-freetext" href=3D"https://=
www.pragma-ade.nl">https://www.pragma-ade.nl</a> / <a class=3D"moz-txt-li=
nk-freetext" href=3D"https://context.aanhet.net">https://context.aanhet.n=
et</a>
      (mirror)
      <br>
      archive=C2=A0 : <a class=3D"moz-txt-link-freetext" href=3D"https://=
github.com/contextgarden/context">https://github.com/contextgarden/contex=
t</a>
      <br>
      wiki=C2=A0=C2=A0=C2=A0=C2=A0 : <a class=3D"moz-txt-link-freetext" h=
ref=3D"https://wiki.contextgarden.net">https://wiki.contextgarden.net</a>
      <br>
_________________________________________________________________________=
__________
      <br>
    </blockquote>
    <p>Excellent, and thank you for the explanation. I guess #? is still
      available.</p>
    <p>(I had tried with #:, but not in combination with [#1] and #=3D fo=
r
      the last parameter).</p>
    <p>-- <br>
      Rik<br>
    </p>
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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 / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

--===============0222777072666653800==--