[gtksourceview] Mark as user actions undo and redo

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 0f97d9435c266ab9688ed4ae537b9a685b2cb4b4
Author: Ignacio Casal Quinteiro <ignacio casal nice-software com>
Date:   Fri Jan 18 20:11:56 2013 +0100

    Mark as user actions undo and redo

 gtksourceview/gtksourceundomanagerdefault.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourceundomanagerdefault.c b/gtksourceview/gtksourceundomanagerdefault.c
index e5071f6..34860b0 100644
--- a/gtksourceview/gtksourceundomanagerdefault.c
+++ b/gtksourceview/gtksourceundomanagerdefault.c
@@ -510,7 +510,10 @@ insert_text (GtkTextBuffer *buffer,
 	GtkTextIter iter;
 
 	gtk_text_buffer_get_iter_at_offset (buffer, &iter, pos);
+
+	gtk_text_buffer_begin_user_action (buffer);
 	gtk_text_buffer_insert (buffer, &iter, text, len);
+	gtk_text_buffer_end_user_action (buffer);
 }
 
 static void
@@ -528,7 +531,9 @@ delete_text (GtkTextBuffer *buffer,
 	else
 		gtk_text_buffer_get_iter_at_offset (buffer, &end_iter, end);
 
+	gtk_text_buffer_begin_user_action (buffer);
 	gtk_text_buffer_delete (buffer, &start_iter, &end_iter);
+	gtk_text_buffer_end_user_action (buffer);
 }
 
 static gchar *