Page Layout ⇒ float, framed | Unwanted Effect on Headings

[rankinjo]

I defined a custom float environment to put a grey background behind the caption, using the framed package. Like this:

Code: Select all

% grey background custom floats with rule
\definecolor{shadecolor}{gray}{.8}
\renewcommand\fs@plaintop{\def\@fs@cfont{\bfseries}%
 \def\@fs@pre{\begin{snugshade}}%
 \def\@fs@mid{\end{snugshade}\kern3pt}%
 \def\@fs@post{\kern5pt\hrule}%
 \let\@fs@iftopcapt\iftrue}

The problem: On my Mac, this works as expected, but on my Linux Mint computer, all subsequent \section, \subsection, ... commands lose their "beforeskip" and appear immediately after the preceding paragraphs, with no vertical space. The "afterskip" is not affected. If I use the shaded environment, instead of snugshade, the proper \section spacing is restored:

Code: Select all

% grey background custom floats with rule
\definecolor{shadecolor}{gray}{.8}
\renewcommand\fs@plaintop{\def\@fs@cfont{\bfseries}%
 \def\@fs@pre{\begin{shaded}}%
 \def\@fs@mid{\end{shaded}\kern3pt}%
 \def\@fs@post{\kern5pt\hrule}%
 \let\@fs@iftopcapt\iftrue}

Any ideas why this might be happening and how to fix it?

[rankinjo]

Redefining the "snugshade" environment to use code similar to that used in the "shaded" environment definition makes the problem go away, without affecting the snugshade output appearance. It is not obvious why the package defines the two environments in different ways.

[Stefan Kottwitz]

Hi,

thanks for telling how you solved it. I marked your post as the solution.
Btw. perhaps nobody could see a fix because there was no minimal example, which could be compiled and tested. At least I rarely have time to construct a compilable example for reproducing a situation because only a code snippet has been posted. This may be sufficient just for very obvious problems.

Stefan