[AUCTeX] [preview-latex] Play nice with fill-paragraph and/or auto-fill-mode or longlines-mode

[Johannes]

Users that like to wrap their text at the fill-column boundary, using either hard-wrap (with fill-paragraph command and/or auto-fill-mode) or temporary hard-wrap (using longlines-mode) (see http://www.emacswiki.org/emacs/LineWrap for a general survey) experience some problems with preview-latex:

The result are lines, that use actual newline characters to limit the length of each line (to the value fill-column). If the line contains a formula this could look like this example:

Lorem ipsum dolor sit amet, consectetur $\int_0^t x^2
+ x dx$ veniam, quis nostrud exercitation ullamco.

Preview latex will render the math _expression_ and put it in line first line and emacs will put everything on one long line.

Proposed Solution:
If the _expression_ replaced by preview-latex contains a newline character, a newline character should be appended or prepended to the replacing _expression_.

Is this possible?

Thanks!