: Personally, the mm parameter makes my head hurt. : As I read it, there are actually 4 buckets that rules apply to, not three : in your mm definition, see below.
If you have Smiley and Pugh's Solr book, check out pages 138-140... http://wiki.apache.org/solr/PacktBook2009 I created the "mm" syntax and wrote all the parsing code, and i *still* found their explanation clearer then any way i have ever tried to explain it. In particular, they point out that the easiest way to understand it is to read the "num<rule" pairs right to left and if none of them "match" then 100% of the clauses are required -- i had never considered it that way (and honestly i was so use to "my" way of thinking about 'mm' that for several minutes i thought they had made a major mistake) but it is bar none the simplest way to understand the syntax. -Hoss
