From f28e17c2fbd3a9208bc7c8aa860ce6f9a4d97ed9 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Mon, 2 Aug 2021 11:34:01 +0200
Subject: [PATCH] Fix returning connection params in get_parameters() with
 empty default

"options" and "tty" were returned even if they were set to their
default.
---
 psycopg/psycopg/conninfo.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/psycopg/psycopg/conninfo.py b/psycopg/psycopg/conninfo.py
index 3d665c94b..9dfff1339 100644
--- a/psycopg/psycopg/conninfo.py
+++ b/psycopg/psycopg/conninfo.py
@@ -170,7 +170,7 @@ class ConnectionInfo:
         defaults = {
             i.keyword: i.compiled
             for i in pq.Conninfo.get_defaults()
-            if i.compiled
+            if i.compiled is not None
         }
         # Not returned by the libq. Bug? Bet we're using SSH.
         defaults.setdefault(b"channel_binding", b"prefer")
-- 
2.47.3