From c77be4c48283fef09b12b6942cd3b4ae7575528e Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Wed, 15 Nov 2017 21:05:12 -0500
Subject: [PATCH] Implement X command

---
 src/gui/BufferPane.cc | 13 ++++++++++++-
 src/gui/BufferPane.h  |  3 ++-
 src/gui/Window.cc     |  3 ++-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/gui/BufferPane.cc b/src/gui/BufferPane.cc
index 1f19356..b773712 100644
--- a/src/gui/BufferPane.cc
+++ b/src/gui/BufferPane.cc
@@ -325,7 +325,7 @@ void BufferPane::insert_code_point(uint32_t code_point)
     }
 }
 
-void BufferPane::kill_character_at_cursor()
+void BufferPane::kill_character_forward()
 {
     if (**m_iterator != '\n')
     {
@@ -339,6 +339,17 @@ void BufferPane::kill_character_at_cursor()
     }
 }
 
+void BufferPane::kill_character_backward()
+{
+    Buffer::Iterator it = *m_iterator;
+    if (it.go_left_in_line())
+    {
+        m_buffer->erase_code_point(it);
+        m_buffer_view->update();
+        m_window->request_redraw();
+    }
+}
+
 size_t BufferPane::display_column() const
 {
     if (!m_iterator->valid())
diff --git a/src/gui/BufferPane.h b/src/gui/BufferPane.h
index c70fe74..0fa0b39 100644
--- a/src/gui/BufferPane.h
+++ b/src/gui/BufferPane.h
@@ -35,7 +35,8 @@ public:
     void enter_insert_mode(Window::EnterInsertModeMode which);
     void insert_code_point(uint32_t code_point);
     void exit_insert_mode();
-    void kill_character_at_cursor();
+    void kill_character_forward();
+    void kill_character_backward();
     bool insert_mode() const { return m_buffer->insert_mode(); }
     void scroll_window_up(Window::ScrollMode scroll_mode);
     void scroll_window_down(Window::ScrollMode scroll_mode);
diff --git a/src/gui/Window.cc b/src/gui/Window.cc
index 0c8cd5b..0fdeaee 100644
--- a/src/gui/Window.cc
+++ b/src/gui/Window.cc
@@ -340,9 +340,10 @@ void Window::execute_command(const Command & command)
     case Command::DELETE_LINE:
         break;
     case Command::DELETE_CHAR:
-        m_focused_buffer_pane->kill_character_at_cursor();
+        m_focused_buffer_pane->kill_character_forward();
         break;
     case Command::DELETE_CHAR_BACK:
+        m_focused_buffer_pane->kill_character_backward();
         break;
     case Command::CHANGE_MOTION:
         break;