[gnome-builder/wip/vim] vim: implement `D` to delete to end of line.

[Christian Hergert <chergert src gnome org>]

commit 33d3e85ebd3fd0a7e63f72076466fdcd4316f401
Author: Christian Hergert <christian hergert me>
Date:   Mon Sep 29 17:51:53 2014 -0700

    vim: implement `D` to delete to end of line.

 src/editor/gb-editor-vim.c |   37 +++++++++++++++++++++++++++++++++++++
 1 files changed, 37 insertions(+), 0 deletions(-)
---
diff --git a/src/editor/gb-editor-vim.c b/src/editor/gb-editor-vim.c
index 33243c7..9efb886 100644
--- a/src/editor/gb-editor-vim.c
+++ b/src/editor/gb-editor-vim.c
@@ -628,6 +628,35 @@ gb_editor_vim_insert_nl_after (GbEditorVim *vim)
   gtk_text_view_scroll_mark_onscreen (vim->priv->text_view, insert);
 }
 
+static void
+gb_editor_vim_delete_to_line_end (GbEditorVim *vim)
+{
+  GtkTextBuffer *buffer;
+  GtkTextMark *insert;
+  GtkTextIter begin;
+  GtkTextIter end;
+
+  g_return_if_fail (GB_IS_EDITOR_VIM (vim));
+
+  buffer = gtk_text_view_get_buffer (vim->priv->text_view);
+  insert = gtk_text_buffer_get_insert (buffer);
+  gtk_text_buffer_get_iter_at_mark (buffer, &begin, insert);
+  gtk_text_iter_assign (&end, &begin);
+  
+  /*
+   * Move forward to the end of the line, excluding the \n.
+   */
+  while (!gtk_text_iter_ends_line (&end))
+    if (!gtk_text_iter_forward_char (&end))
+      break;
+  
+  gtk_text_buffer_begin_user_action (buffer);
+  gtk_text_buffer_delete (buffer, &begin, &end);
+  gtk_text_buffer_end_user_action (buffer);
+
+  vim->priv->target_line_offset = gb_editor_vim_get_line_offset (vim);
+}
+
 static gboolean
 gb_editor_vim_has_selection (GbEditorVim *vim)
 {
@@ -683,6 +712,14 @@ gb_editor_vim_handle_normal (GbEditorVim *vim,
       gb_editor_vim_set_mode (vim, GB_EDITOR_VIM_INSERT);
       return TRUE;
 
+    case GDK_KEY_D:
+      /*
+       * Delete from the current position to the end of the line.
+       * Stay in NORMAL mode.
+       */
+      gb_editor_vim_delete_to_line_end (vim);
+      return TRUE;
+
     case GDK_KEY_l:
       /*
        * Move forward in the buffer one character, but stay on the