From 38d615ecc47e1c791e6402d2302678b822c10399 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Tue, 27 Dec 2016 15:10:45 -0500
Subject: [PATCH] insert a \n to follow new content when inserting into an
 empty buffer

---
 src/core/Buffer.cc | 17 ++++++++++++-----
 src/core/Buffer.h  |  2 +-
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/core/Buffer.cc b/src/core/Buffer.cc
index 1e7caef..741516f 100644
--- a/src/core/Buffer.cc
+++ b/src/core/Buffer.cc
@@ -162,22 +162,29 @@ void Buffer::exit_insert_mode()
     m_insert_mode = false;
 }
 
-void Buffer::insert_code_point(uint32_t code_point)
+void Buffer::insert_code_point(uint32_t code_point, bool adjust_iterators)
 {
     if (m_insert_mode)
     {
+        if ((code_point != '\n') && (size() == 0u))
+        {
+            insert_code_point('\n', false);
+        }
         uint8_t encoded[Encoding::MAX_CODE_POINT_SIZE];
         uint8_t bytes = Encoding::encode(code_point, m_encoding, encoded);
         m_gap_buffer->insert(m_insert_position, encoded, bytes);
         ssize_t lines = (code_point == '\n') ? 1 : 0;
-        for (auto iterator : m_iterators)
+        if (adjust_iterators)
         {
-            if (iterator->offset() >= m_insert_position)
+            for (auto iterator : m_iterators)
             {
-                iterator->warp(bytes, lines);
+                if (iterator->offset() >= m_insert_position)
+                {
+                    iterator->warp(bytes, lines);
+                }
             }
+            m_insert_position += bytes;
         }
-        m_insert_position += bytes;
     }
 }
 
diff --git a/src/core/Buffer.h b/src/core/Buffer.h
index e37ef74..6dfdee6 100644
--- a/src/core/Buffer.h
+++ b/src/core/Buffer.h
@@ -105,7 +105,7 @@ public:
     void enter_insert_mode(const Buffer::Iterator & position);
     void exit_insert_mode();
     bool insert_mode() const { return m_insert_mode; }
-    void insert_code_point(uint32_t code_point);
+    void insert_code_point(uint32_t code_point, bool adjust_iterators = true);
     void erase_code_point(const Buffer::Iterator & position);
 
 protected: