Document that btrim()'s second parameter is optional, and defaults to spaces.

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 52bd7293ca021b3a88a70293baff9be25925033d..6de67e6484f3f44672519bcb3cc3364fafddf1e8 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,5 +1,5 @@
 
 
@@ -1070,12 +1070,13 @@ PostgreSQL documentation
       
 
       
-       btrim(string text, characters text)
+       btrim(string text
+       , characters text)
        text
        
         Remove the longest string consisting only of characters
-        in characters from the start and end of
-        string.
+        in characters (or spaces if not supplied)
+        from the start and end of string.
        
        btrim('xyxtrimyyx', 'xy')
        trim