Proper analyzer / tokenizer for syslog data?

[Peter Spam]

Example data:
01/23/2011 05:12:34 [Test] a=1; hello_there=50; data=[1,5,30%];

I would love to be able to just "grep" the data - ie. if I search for "ello", 
it finds and returns "ello", and if I search for "hello_there=5", it would 
match too.

Here's what I'm using now:

   <fieldType name="text_sy" class="solr.TextField">
     <analyzer>
       <tokenizer class="solr.StandardTokenizerFactory"/>
       <filter class="solr.LowerCaseFilterFactory"/>
       <filter class="solr.WordDelimiterFilterFactory" generateWordParts="0" 
generateNumberParts="0" catenateWords="0" catenateNumbers="0" catenateAll="0" 
splitOnCaseChange="0"/>
     </analyzer>
   </fieldType>

The problem with this is that if I search for a substring, I don't get anything 
back.  For example, searching for "ello" or "*ello*" doesn't return.  Any ideas?

http://localhost:8983/solr/select?q=*ello*&start=0&rows=50&hl.maxAnalyzedChars=2147483647&hl.useFastVectorHighlighter=true&hl=true&hl.fl=body&hl.snippets=1&hl.fragsize=400


Thanks!
Pete