Re: Tikz module causes errors

From: Mojca Miklavec <mojca.miklavec.lists@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Christian Feuersaenger <cfeuersaenger@googlemail.com>,
	Christophe Jorssen <christophe.jorssen@gmail.com>
Subject: Re: Tikz module causes errors
Date: Tue, 17 Jan 2012 16:28:13 +0100	[thread overview]
Message-ID: <CALBOmsbhZLVX=9RRP9BVGJsUkQiDJ6bMYhjUMLRM5sCyY2AX8g@mail.gmail.com> (raw)
In-Reply-To: <CAK5aKC83ctAPh_9vxsDtgLd_RnXgay8f++eg+CT-uwofUbLZhQ@mail.gmail.com>

On Tue, Jan 17, 2012 at 16:00, Felix Ingram wrote:
> I've just updated to the latest beta and the following will cause an error:
>
> \usemodule[tikz]
> \starttext
> Hello World
> \stoptext
>
>
> The error is:
>
> system          > tex > error on line 129 in file example.tex:
> Undefined control sequence ...
>
> l.129   \catcode`\;=\active
>
> Obviously there is no line 129. A quick greg shows that the likely suspect is:
> tex\texmf-modules\tex\generic\pgf\utilities\pgffor.code.tex:129
>
> Is this the best place to report this, or should I drop a mail to the
> Tikz/PGF list?

It's complicated because I'm not aware of any major TikZ developer
using ConTeXt.

The main question is: is this a recent problem in TikZ or in ConTeXt?
Usually people on this list might know how to fix problems, but then
you need to convince pgf team to accept patches. (And then Aditya
started contributing and collecting some patches independently.)

I didn't follow development of ConTeXt too closely, but I'm lead to
believe that \active has disappeared from ConTeXt MKIV. Others will
have to correct me if I'm wrong - I didn't check ConTeXt sources. And
others will have to make suggestion about what to do about this.
Patching might as easy as adding \def\active{13} somewhere on top of
TikZ sources, but it might help to understand why Hans decided to
remove the \active command if that is true.

On the other hand (completely unrelated), I just realized that the
following commit (unofficial and unreliable temporary repository):
    https://github.com/mojca/pgf/commit/418b278dcf6a2193d0d564d9d85194bdce1e505e
only fixes LaTeX and plain TeX and doesn't fix ConTeXt. I don't know
what the patch is about, but I'm lead to believe that the same patch
might be needed in ConTeXt as well if it is needed for the other two.

Mojca
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