order of analyzers, tokeinizers and filters

[Markus.Rietzler]

hi,
it's the second time i am stumble across some strange behaviour:

in my schema.xml i have defined 

    <fieldType name="textspell" class="solr.TextField"
positionIncrementGap="100">
      <analyzer type="index">
        <!-- sg324 inkl. HTMLStrip... -->
        <charFilter class="solr.HTMLStripCharFilterFactory" />
        <filter class="solr.PatternReplaceFilterFactory" pattern="/"
replacement=" / " replace="all"/>
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt" enablePositionIncrements="true" />
        <filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="1"
catenateNumbers="1" catenateAll="0" splitOnCaseChange="0"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords_spelling.txt" enablePositionIncrements="true" />
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>

i can't place the PatternReplaceFilter before the WhitespaceTokenizer. i
have the schema like above, did a reload of my core, but
when i go to analyze in the admin i can see that the WhiteSpaceTokenizer
is executed before the PatternReplaceFilter.

is there a general order of execution?

markus