[slime-devel] Problem with `swank-require'

[John Wiegley]

Around line 2283 in swank.lisp is a function, swank-require.  It calls  
CL's `require' passing three arguments.

Now, the third argument is determined by a call to `module-filename',  
just a few lines down, which triggers an error if it can't find the  
file.

The reason this is a problem is that I bind swank into my SBCL core  
and then I move that core to other systems, which don't have the swank  
Lisp files on them.  Although a regular call to require works fine in  
this case, swank generates an error because the .lisp file itself  
cannot be found.

I think the solution is for module-filename to just return nil if it  
can't find anything, and leave it up to `require' to generate the  
error if need be.

John