Rails - Jun 2005 - strange behaviour, could you reproduce it ?

hi everybody,
        
using 0.12.1 + webrick + builder 1.2.3 i''ve got a 404 and this in the
logs:
        
        #<RuntimeError: bad header
''"\"test\"\n"''.>
        [".../lib/ruby/1.8/webrick/httputils.rb:143:in
`parse_header''"]
        
with an index.rxml containing only this code:
        
        xml.instruct!
        xml.test {
        (''a''..''z'').to_a.each { |x|
xml.tag!(x, ''test'') }
        }
        
strangely enough this works:
        
        (''a''..''o'').to_a.each { |x|
xml.tag!(x, ''test'') }
        
and this too:
        
        (''q''..''x'').to_a.each { |x|
xml.tag!(x, ''test'') }
        
for what i''ve found, the problem is with ''p'' or
''y'', hey maybe it''s the
beginning of a conspiration, after that the next banned letters will be
''t h o n'' ;-D

maybe someone can test to see if it''s reproducible elsewhere than in my
bizarro world ?

Thanks

Richard