From 27fc3a3d43902bab109c5f08335f6132413764a2 Mon Sep 17 00:00:00 2001
From: John Wiegley <johnw@newartisans.com>
Date: Mon, 23 Feb 2009 14:38:36 -0400
Subject: [PATCH] A sequence is false if all it contains is false

---
 src/value.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/value.cc b/src/value.cc
index 54a6038f..96c8e269 100644
--- a/src/value.cc
+++ b/src/value.cc
@@ -94,7 +94,13 @@ value_t::operator bool() const
   case STRING:
     return ! as_string().empty();
   case SEQUENCE:
-    return ! as_sequence().empty();
+    if (! as_sequence().empty()) {
+      foreach (const value_t& value, as_sequence()) {
+	if (value)
+	  return true;
+      }
+    }
+    return false;
   case POINTER:
     return ! as_any_pointer().empty();
   default: