From 0d18b065622d0a06929cd6ffd07b010964473430 Mon Sep 17 00:00:00 2001
From: Sergey Fedoseev <fedoseev.sergey@gmail.com>
Date: Thu, 11 Aug 2016 02:32:08 +0600
Subject: [PATCH] Documented GeoHash's precision parameter.

---
 docs/ref/contrib/gis/functions.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/docs/ref/contrib/gis/functions.txt b/docs/ref/contrib/gis/functions.txt
index 164043d569..f2be78d45c 100644
--- a/docs/ref/contrib/gis/functions.txt
+++ b/docs/ref/contrib/gis/functions.txt
@@ -261,13 +261,16 @@ right-hand rule.
 ``GeoHash``
 ===========
 
-.. class:: GeoHash(expression, **extra)
+.. class:: GeoHash(expression, precision=None, **extra)
 
 *Availability*: PostGIS, SpatiaLite (LWGEOM)
 
 Accepts a single geographic field or expression and returns a `GeoHash`__
 representation of the geometry.
 
+The ``precision`` keyword argument controls the number of characters in the
+result.
+
 .. versionchanged:: 1.10
 
     SpatiaLite support was added.