word splitting in arguments to %%tikz

[cfraizer]

In one cell, I create a preamble like:

preamble=r'''\tikzset{terminal/.style={rectangle, minimum size=6mm, rounded corners=3mm, very thick, draw=black!50,
    top color=white, bottom color=black!20, font=\ttfamily}}'''

But it seems to terminate the preamble at <space> characters. so

%%tikz -f svg -l calc,positioning,shapes.misc -x $preamble

generates LaTeX code like:

% ⋮
\usetikzlibrary{shapes.misc}
\tikzset{terminal/.style={rectangle,
\begin{document}
% ⋮

[nog642]

Still an issue.

Ran pip install git+https://github.com/kpobrien/ipython-tikzmagic.git to get pull #43 to deal with this.