Use of marginfigure produces unwated indentation

[GoogleCodeExporter]

(Please attach an example .tex file demonstrating the problem or bug.)

Please describe the feature, problem, or bug:

Usage of marginfigure environment produces unwated indentation between equation 
and text block (see file indentation.jpg)

What is the expected output? What do you see instead?

No indentation should appear (see file no-indentation.jpg)

What version of Tufte-LaTeX are you using?  With which TeX distribution?

3.5

Please provide any additional information below.

Here's the code used in the example:

Come \`e stato gi\`a fatto per la guida rettangolare, il problema pu\`o essere 
semplificato con il metodo di
separazione delle variabili, e si pone
\index{separazione delle variabili}
\begin{equation}
T = R(r)\Phi(\phi) \label{eq:gui-cir:sep-var}
\end{equation}
\begin{marginfigure}
\centering
\missingfigure{p 53 bozza}
\caption[Sezione trasversale della guida cilindrica a sezione 
circolare]{Sezione trasversale della guida
cilindrica a sezione circolare: la funzione $\Phi(\phi)$ deve essere periodica, 
di periodo $2\pi$.}
\label{fig:gui-cir:sez-tra}
\end{marginfigure}
Dato il sistema di coordinate considerato (\cref{fig:gui-cir:sez-tra}), la 
funzione $\Phi(\phi)$ deve essere
periodica, di periodo $2\pi$, in modo tale da soddisfare l'uguaglianza

Original issue reported on code.google.com by [email protected] on 7 Nov 2011 at 5:58

Attachments:

• indentation.jpeg

[GoogleCodeExporter]

It appears that it's the \FloatBarrier line that causes the paragraph break.  
You can add the following to the preamble of your document (between 
\documentclass{tufte-book} and \begin{document}) to see the effect:


\makeatletter
\renewenvironment{@tufte@margin@float}[2][-1.2ex]%
  {%\FloatBarrier% process all floats before this point so the figure/table numbers stay in order.
  \begin{lrbox}{\@tufte@margin@floatbox}%
  \begin{minipage}{\marginparwidth}%
    \@tufte@caption@font%
    \def\@captype{#2}%
    \hbox{}\vspace*{#1}%
    \@tufte@caption@justification%
    \@tufte@margin@par%
    \noindent%
  }
  {\end{minipage}%
  \end{lrbox}%
  \marginpar{\usebox{\@tufte@margin@floatbox}}%
  }
\makeatother

The primary side-effect of removing the \FloatBarrier line is that it opens the 
possibility of the floats being numbered out of sequence.  For example, the 
margin figure may be numbered 15, but a figure that was defined earlier and 
placed on the following page would be numbered 14.

You can, of course, issue the \FloatBarrier yourself at a point in the document 
where a paragraph break occurs naturally to prevent the misnumbered floats.  
(See the documentation for the placeins package for more details on 
\FloatBarrier: <http:https://ctan.org/pkg/placeins>.)

Please let me know if this resolves the issue.

Original comment by [email protected] on 15 Nov 2011 at 12:47

[GoogleCodeExporter]

I'll give it a try; I'm familiar with the placeins package.
However, how does the TL class invoke the \floatbarrier command?
Only when a sidefigure is created?

Original comment by [email protected] on 15 Nov 2011 at 2:53

[GoogleCodeExporter]

Yes. It only invokes \FloatBarrier when you create a marginfigure or 
margintable.

Original comment by [email protected] on 15 Nov 2011 at 6:14