diff -r RubyX11-0.5/Documentation RubyX11-0.5nk/Documentation
166a167,172
> 7. handling X errors
> 
> 	When the X server replies with an X error, an XError exception
> 	will be raised, after logging and/or pausing (depending on the
> 	value of the X11_LOG environment variable). You must handle this.
> 
diff -r RubyX11-0.5/X11/Display.rb RubyX11-0.5nk/X11/Display.rb
482c482
< 		eid, = chunk.unpack("C")
---
> 		eid = chunk[0]
486c486
< 			X11.log :error, error.inspect
---
> 			X11.log(:error, error.inspect) if X11_LOG > 1
487a488
> 			raise error
502c503
< 				raise "Unknown event type #{event_code}"
---
> 				raise "Unknown event type #{eid}"
diff -r RubyX11-0.5/X11/Event.rb RubyX11-0.5nk/X11/Event.rb
322c322
< class XError
---
> class XError < StandardError
diff -r RubyX11-0.5/X11/Type.rb RubyX11-0.5nk/X11/Type.rb
288a289
> 		input.header.read(1) if format[0].in_header   # NK: skip "type" byte
diff -r RubyX11-0.5/X11/XID.rb RubyX11-0.5nk/X11/XID.rb
208c208
< 		[:format, Uint8.such_that {|x| [8,16,32].include? x }, :in_header],
---
> 		[:format, Uint8.such_that {|x| [0, 8,16,32].include? x }, :in_header],