Added docutils SQL role.

doc/_static/psycopg.css

@@ -9,3 +9,13 @@ div.dbapi-extension {
     background-color: #f5ffd4;
     border: 1px solid #bda;
 }
+
+tt.sql {
+    font-size: 1em;
+    background-color: #fff;
+}
+
+a > tt.sql:hover {
+    text-decoration: underline;
+}
+

doc/sql_role.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+"""
+    sql role
+    ~~~~~~~~
+
+    An interpreted text role to style SQL syntax in Psycopg documentation.
+
+    :copyright: Copyright 2010 by Daniele Varrazzo.
+"""
+
+from docutils import nodes, utils
+from docutils.parsers.rst import roles
+
+def sql_role(name, rawtext, text, lineno, inliner, options={}, content=[]):
+    text = utils.unescape(text) 
+    options['classes'] = ['sql']
+    return [nodes.literal(rawtext, text, **options)], []
+    
+def setup(app):
+    roles.register_local_role('sql', sql_role)
+