Mention configurations early in text search documentation to table/index

section makes a little more sense.

diff --git a/doc/src/sgml/textsearch.sgml b/doc/src/sgml/textsearch.sgml
index 5124bd80ae3960dcdb3f4abc3b852e4079d1f814..ee2812accab0611ca441abf731501414b7a1c1de 100644 (file)
--- a/doc/src/sgml/textsearch.sgml
+++ b/doc/src/sgml/textsearch.sgml
@@ -329,8 +329,27 @@ The form text @@ tsquery
 is equivalent to to_tsvector(x) @@ y.
 The form text @@ text
 is equivalent to to_tsvector(x) @@ plainto_tsquery(y).
-Note that the results of these forms will depend on the setting of 
-linkend="guc-default-text-search-config">.
+
+
+
+Configurations
+
+
+configurations
+
+
+
+The above are all simple text search examples.  As mentioned before, full
+text search functionality includes the ability to do many more things:
+skip indexing certain words (stop words), process synonyms, and use
+sophisticated parsing, e.g. parse based on more than just white space.
+This functionality is controlled by configurations.
+Fortunately, PostgreSQL comes with predefined
+configurations for many languages.  (psql's \dF
+shows all predefined configurations.)  During installation an appropriate
+configuration was selected and 
+linkend="guc-default-text-search-config"> was set accordingly.  If you
+need to change it, see .
 
 
 
@@ -2646,15 +2665,12 @@ database you must be careful to reference the proper text search
 configuration.  This can be done by either setting
 default_text_search_config in each session or supplying the
 configuration name in every function call, e.g.  to_tsquery('french',
-'friend'), to_tsvector('english', col).  If you are using an expression index,
-you must also be sure to use the proper text search configuration every
-time an INSERT or UPDATE is executed because these
-will modify the index, or you can embed the configuration name into the
-expression index, e.g.:
+'friend'), to_tsvector('english', col).  If you are using an expression
+index you must embed the configuration name into the expression index, e.g.:
 
 CREATE INDEX pgweb_idx ON pgweb USING gin(to_tsvector('french', title || body));
 
-And if you do that, make sure you specify the configuration name in the
+And for an expression index, specify the configuration name in the
 WHERE clause as well so the expression index will be used.