On Wed, 22 Jul 2009, Mojca Miklavec wrote:

> On Wed, Jul 22, 2009 at 03:08, Aditya Mahajan wrote:
>> CCed to ConTeXt mailing list.
>
> (And removed the pgf mailing list? :)

No... it was in the newsroup header (I was replying via gmane interface).

>> On Tue, 21 Jul 2009, Mojca Miklavec wrote to pgf.user list:
>>
>>> Hello,
>>>
>>> I noticed that a large number of
>>>   \begin{tikzpicture} \draw (0,0) -- (5,1); \end{tikzpicture}
>>> breaks at line end while
>>>   \starttikzpicture \draw (0,0) -- (5,1); \stoptikzpicture
>>> just generates an infinitely long line.
>>>
>>> Is there any simple way to fix the behaviour in ConTeXt?
>>
>> Don't know.
>
> I have just noticed that (independent of the second issue) when
> placing several items of:
>
> 1.) \tikz \draw (0,0)--(4,2);
>    works OK in both LaTeX and ConTeXt
> 2.) \begin{tikzpicture} \draw (0,0)--(4,2); \end{tikzpicture}
>    works OK in LaTeX
> 3.) \starttikzpicture \draw (0,0)--(4,2); \stoptikzpicture{}
>    works OK in ConTeXt
> 4.) \starttikzpicture \draw (0,0)--(4,2); \stoptikzpicture
>    creates an infinitely long line in ConTeXt
>
> Does that ring a bell to anyone? (It must be something trivial like
> eating any spaces after \commandsequence, but I don't know what
> exactly.)

Try the undocumented equivalent of \begin{...} \end{...} in ConTeXt:

\start[tikzpicture] ... \stop[tikzpicture]

>>> I also don't like the behaviour in
>>>   \placefigure{title}{\starttikzpicture ... \stoptikzpicture}
>>> that has to be surrounded with
>>>   \hbox{\starttikzpicture ... \stoptikzpicture}
>>> else the figure gets placed at the beginning of line instead of being
>>> centered.
>>
>> [explanation snipped]
>>
>> If neither of these is acceptable, then we can have a simple wrapper around
>> \start-stop tikzpicture:
>>
>> \def\startTIKZcode{\hbox\bgroup\starttikzpicture}
>> \def\stopTIKZcode {\stoptikzpicture\egroup}
>>
>> which will only affect ConTeXt code.
>
> Would it affect anyone if TikZ would generate an hbox instead of vbox
> (at least in ConTeXt)?
>
> That means ... instead of
>    \let\starttikzpicture=\tikzpicture
>    \let\stoptikzpicture=\endtikzpicture
> having
>    \def\starttikzpicture{\hbox\bgroup\tikzpicture}
>    \def\stoptikzpicture{\endtikzpicture\egroup}


This is same as the workaround that I suggested. It should work perfectly 
fine in ConTeXt.

Aditya