I there an active maintainer of Ruby/Tk?  I have posted a couple of problems 
that look like bugs in tk.rb. (Or Tk itself)., But have heard back nothing.  
Here is another.  I have an app that uses a Courier 12 font, straight from a 
Tk demo.  It loads and runs fine when invoked without debug.  However, when 
the same program in invoked with debug I get the following:

$ ruby -rdebug tableEditor2.rb
Debug.rb
Emacs support available.
 
tableEditor2.rb:1:module TableEditor
(rdb:1) b point
Set breakpoint 1 at tableEditor2.rb:point
(rdb:1) c
/usr/local/lib/ruby/1.6/tk.rb:966: `named font "Courier -12" doesn't exist' 
(RuntimeError)        from /usr/local/lib/ruby/1.6/tkfont.rb:179:in 
`init_widget_font'
        from /usr/local/lib/ruby/1.6/tk.rb:2096:in `font_configinfo'
        from /usr/local/lib/ruby/1.6/tk.rb:2125:in `latinfont_configure'
        from /usr/local/lib/ruby/1.6/tk.rb:2107:in `font_configure'
        from /usr/local/lib/ruby/1.6/tk.rb:2247:in `configure'
        from /usr/local/lib/ruby/1.6/tk.rb:2349:in `initialize'
        from /usr/local/lib/ruby/1.6/tktext.rb:136:in `new'
        from /usr/local/lib/ruby/1.6/tktext.rb:136:in `new'
        from tableEditor2.rb:266:in `initialize'
        from tableEditor2.rb:595:in `new'
        from tableEditor2.rb:595
/usr/local/lib/ruby/1.6/tk.rb:966:      _fromUTF8(__invoke(*cmds), @encoding)
(rdb:1)