From 191e6140b369eb9fbbb409bfe43ea10fb267f4d7 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Mon, 16 Jan 2023 15:32:43 -0800
Subject: [PATCH] Fix print

---
 gtsam/hybrid/HybridFactor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/hybrid/HybridFactor.cpp b/gtsam/hybrid/HybridFactor.cpp
index 1216fd922..b25e97f05 100644
--- a/gtsam/hybrid/HybridFactor.cpp
+++ b/gtsam/hybrid/HybridFactor.cpp
@@ -81,7 +81,7 @@ bool HybridFactor::equals(const HybridFactor &lf, double tol) const {
 /* ************************************************************************ */
 void HybridFactor::print(const std::string &s,
                          const KeyFormatter &formatter) const {
-  std::cout << s;
+  std::cout << (s.empty() ? "" : s + "\n");
   if (isContinuous_) std::cout << "Continuous ";
   if (isDiscrete_) std::cout << "Discrete ";
   if (isHybrid_) std::cout << "Hybrid ";