sup talk - Jan 2011 - issue after upgrading sup mainline

Hi,

I wanted to use 0.12 version of sup and did git pull. But getting below
error.

jagadeesh at jagadeesh-laptop ~/Downloads/SUP/mainline $ ls
bin           devel        lib          README.txt          sup-version.rb
bugs          doc          LICENSE      ReleaseNotes        test
contrib       HACKING      protocol.md  release-script.txt  www
CONTRIBUTORS  History.txt  Rakefile     sup-files.rb

jagadeesh at jagadeesh-laptop ~/Downloads/SUP/mainline $ ruby -I lib -w bin/sup
./lib/sup/util.rb:330: warning: `&'' interpreted as argument prefix
/usr/lib/ruby/1.8/pathname.rb:263: warning: `*'' interpreted as argument
prefix
./lib/sup/util.rb:19: warning: method redefined; discarding old gen_lock_id
./lib/sup/util.rb:30: warning: method redefined; discarding old dump_lock_id
./lib/sup/util.rb:107: warning: method redefined; discarding old
calculate_boundaries
./lib/sup/message.rb:285: warning: `&'' interpreted as argument
prefix
./lib/sup/index.rb:564: warning: `&'' interpreted as argument prefix
./lib/sup/index.rb:17: Xapian version 1.2.1 or higher required
(RuntimeError)
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require''
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require''
from ./lib/sup.rb:359
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require''
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require''
from bin/sup:22
jagadeesh at jagadeesh-laptop ~/Downloads/SUP/mainline $ ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux]

Can someone help me fixing this issue?

Thanks
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The key line would be:
> ./lib/sup/index.rb:17: Xapian version 1.2.1 or higher required
gem upgrade should fix it.

Hamish