Depth issue

Looking into #1175 (closed) , by reverting commit 3c7e60b7, I obtained the following error from matlab when trying to run Christiano-Motto-Rostagno model (the one in subfolder figure4 of the archive available here

Error: File: cmr_static.m Line: 1292 Column: 16331
Nesting of {, [, and ( cannot exceed a depth of 32.

@MichelJuillard May this be a consequence of your patch about on auxiliary variables in steady state and static files (see #1133 (closed))?