When attempting to convert the def file for Return to Castle Wolfenstein from GtkRadiant (1.6.6), I get the following error:
wolf_entities.def:661:27: error: Unexpected symbol
I am using the v1.2 release of def2fgd as found on the releases page of this repository. When looking at row 661, column 27, that character appears to just be a space, so I'm not sure what the unexpected symbol could be.