Solr Minimum Match not working?

Question

In my solrconfig.xml I specify a mm of 100% yet, searches with multiple terms, still show results that only match some of the search terms. If I explicitly put a + in front of each term, the desired behavior is achieved, but for obvious reasons, I don't want the user to have to enter the +'s.

Also, I have tried several variations of the mm parameter, and none of them seem to achieve what I am after. Below is the entire request handler:

<requestHandler name="dismax" class="solr.SearchHandler" >
  <lst name="defaults">
    <str name="defType">dismax</str>
    <str name="echoParams">explicit</str>
    <float name="tie">0.01</float>
    <str name="qf">
      body^0.5 subject^3.0 from^10.0 to^7.0
    </str>
    <str name="mm">
      100%
    </str>
    <int name="ps">100</int>
    <str name="q.alt">*:*</str>
  </lst>
</requestHandler>

What am I doing wrong?

Answer 1

I've answered my own question. The xml config above is fine. I was passing a boost parameter to the query that looked something like

{!boost b=<some boost>}

And that was causing the dismax handler to parse the query differently, thereby ignoring the mm.