From d34ee9ceeebc06a6116d34c065320ed8035b2218 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Fri, 14 Sep 2018 17:19:51 +0200
Subject: [PATCH] [poincare] Fix empty layout insertion in horizontal layout

---
 poincare/src/horizontal_layout.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/poincare/src/horizontal_layout.cpp b/poincare/src/horizontal_layout.cpp
index 9b751eaca..d78e0cb35 100644
--- a/poincare/src/horizontal_layout.cpp
+++ b/poincare/src/horizontal_layout.cpp
@@ -388,7 +388,12 @@ void HorizontalLayoutReference::addOrMergeChildAtIndex(LayoutReference l, int in
 }
 
 void HorizontalLayoutReference::addChildAtIndex(LayoutReference l, int index, int currentNumberOfChildren, LayoutCursor * cursor, bool removeEmptyChildren) {
-  if (!removeEmptyChildren || !l.isEmpty()) {
+  if (!removeEmptyChildren
+      || !l.isEmpty()
+      || numberOfChildren() == 0
+      || (index < numberOfChildren()
+        && childAtIndex(index).mustHaveLeftSibling()))
+  {
     LayoutReference::addChildAtIndex(l, index, currentNumberOfChildren, cursor);
   }
 }