Defining file_type extensions



Hello,

I've encountered a problem in the latest versions of maxima. Specially, 
the load function no longer works on my code because I have given the 
.mxs extension to all my code files. So now I have

(%i3) load("weightingmatrix.mxs");
Load failed for weightingmatrix.mxs
  -- an error. To debug this try: debugmode(true);

Simply renaming individual files solves this issue

(%i4) load("weightingmatrix.mac");
0 errors, 0 warnings
(%o4)                         weightingmatrix.mac

But I have many dozens of mxs files which all contain mxs calls in their 
code. Rather than re-write everything, I would like to define mxs as a 
maxima file type so that file_type recognises it as maxima code.

How can this best be done? Is there a way to do it in a maximarc file or 
the like?

OMF