SOLR-13588: Document Estonian analyzer in Solr Ref Guide

solr/CHANGES.txt

@@ -152,7 +152,8 @@ New Features
 
 * SOLR-13589: Allow zplot to visualize 2D clusters and convex hulls (Joel Bernstein)
 
-* SOLR-13602: Add a field type for Estonian language to default managed_schema (Tomoko Uchida)
+* SOLR-13602 SOLR-13588: Add a field type for Estonian language to default managed_schema,
+  document about Estonian language analysis in Solr Ref Guide (Tomoko Uchida)
 
 Bug Fixes
 ----------------------

solr/solr-ref-guide/src/language-analysis.adoc

@@ -587,6 +587,7 @@ These factories are each designed to work with specific languages. The languages
 * <<Danish>>
 
 * <<Dutch>>
+* <<Estonian>>
 * <<Finnish>>
 * <<French>>
 * <<Galician>>
@@ -916,6 +917,33 @@ Solr can stem Dutch using the Snowball Porter Stemmer with an argument of `langu
 
 *Out:* "kanal", "kanal"
 
+=== Estonian
+
+Solr can stem Estonian using the Snowball Porter Stemmer with an argument of `language="Estonian"`.
+
+*Factory class:* `solr.SnowballPorterFilterFactory`
+
+*Arguments:*
+
+`language`:: (required) stemmer language, "Estonian" in this case
+
+*Example:*
+
+[source,xml]
+----
+<analyzer type="index">
+  <tokenizer class="solr.StandardTokenizerFactory"/>
+  <filter class="solr.LowerCaseFilterFactory"/>
+  <filter class="solr.SnowballPorterFilterFactory" language="Estonian"/>
+</analyzer>
+----
+
+*In:* "Taevani tõustes"
+
+*Tokenizer to Filter:* "Taevani", "tõustes"
+
+*Out:* "taevani", "tõus"
+
 === Finnish
 
 Solr includes support for stemming Finnish, and Lucene includes an example stopword list.