Dear AUCTeX developers,
I am encountering an infinite loop when trying to fill buffers that contain long commented out equations. The specific equation doesn't seem to matter, for example, trying to fill a buffer with only the line
% $++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++$
or the line
% $\times \times \times \times \times \times \times \times \times \times \times$
will cause Emacs to hang. Interrupting the filling with C-g shows that thousands of empty comment lines are being added to the buffer. Filling succeeds if the $s are removed, so there must be something specific to equations going on.
I'm afraid I have no experience reading elisp code, so I don't have much chance of figuring out the issue myself, sorry...
Mitchell