more with rdoc.

Attempting to document everything in CVS I did (slightly trimmed):

----------8<-----------------
#!/bin/sh -x
PATH=/scratch/local/bin:$PATH; export PATH
echo $PATH

OUTPUTDIR=/home/hgs/public_html/ruby/rubycvsdocs
if test -d $OUTPUTDIR; then
    echo deleting $OUTPUTDIR
    /bin/rm -rf $OUTPUTDIR
fi
if test -f rubycvsdocs.zip; then
    echo deleting rubycvsdocs.zip
    /bin/rm -f rubycvsdocs.zip
fi
cd /scratch/hgs/rubycvs/ruby
rdoc -a -S -o $OUTPUTDIR

----------8<-----------------

but it didn't descend into all the subdirs of lib. So I added a *
argument:
rdoc -a -S -o $OUTPUTDIR *
because I could see no way to force descent of
subdirectories of subdirectories, and thought this might at least
get me closer to what I wanted.  It failed thusly:

Generating HTML...
/scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in `find_symbol': stack 
level too deep (SystemStackError)
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
        from /scratch/local/lib/ruby/1.9/rdoc/code_objects.rb:328:in 
`find_symbol'
         ... 3182 levels...
        from 
/scratch/local/lib/ruby/1.9/rdoc/generators/html_generator.rb:1182:in 
`generate_html'
        from 
/scratch/local/lib/ruby/1.9/rdoc/generators/html_generator.rb:1107:in `generate'
        from /scratch/local/lib/ruby/1.9/rdoc/rdoc.rb:269:in `document'
        from /scratch/local/bin/rdoc:63

So, is this reproducible, and is there a better way to invoke rdoc
to get what I want?  I expect I've missed something despite
reviewing rdoc --help.  The -r and -R options are to do with ri, not
recursion, and I didn't see other options that looked like what I
was after.

        Thank you,
        Hugh