I case anyone is interested, I sent a patch to ruby-core:

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/7651

(The problem only affects horiz lines in plain text files, not in .rb
files.)

Joel VanderWerf wrote:
> RDoc's horizontal line feature seems to have broken recently (maybe
> since 1.8.4?.
> 
> $ cat README
> = Title
> 
> Should get a horizontal line after this paragraph.
> 
> ----
> 
> This text is not shown!
> 
> $ rdoc README
> 
>                              README:
> Generating HTML...
> 
> Files:   1
> Classes: 0
> Modules: 0
> Methods: 0
> Elapsed: 0.124s
> $ grep shown doc/**/*.html
> $
> $ ruby -v
> ruby 1.8.4 (2005-12-24) [i686-linux]
> $ rdoc -v
> RDoc V1.0.1 - 20041108
> 
> The html output is missing the horiz line and everything after it.
> 
> Can anyone confirm this?
> 
> The rdoc I'm using is the one that came with ruby.
> 


-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407