Try this

open -a /Users/johnmci/Documents/Squeak3.5.0/build/Squeak\  
3.5.2Beta1.app /Users/Shared/Squeak3.5a-5180\  
Folder/Squeak3.5-MacOS-Full/temp2.image *.c

Mmm actually this has a bug in it, if you've three 'c' files then it  
opens three text views on the same file? Didn't look to see where the  
problem is so I can't say if it's in the VM, or in the Smalltalk code.  
Guess I'll need to look tonight.

If Squeak is running already, then the open just asks squeak to show  
the documents including the image via drag/drop, so you might need to  
determine if Squeak is already running.

In the squeak mac VM I do get argc/argv but don't do anything with them  
now. Could change that for 3.6

--
======================================================================== 
===
John M. McIntosh <johnmci at smalltalkconsulting.com> 1-800-477-2659
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
======================================================================== 
===