[gnome-builder] buffer: ignore adding trailing \n when last char is \n

[Christian Hergert <chergert src gnome org>]

commit d2f824c05629e72a16c98c17a6fc1b353a1d154b
Author: Christian Hergert <chergert redhat com>
Date:   Sat Feb 17 13:54:15 2018 -0800

    buffer: ignore adding trailing \n when last char is \n
    
    If we need a trailing newline, and the trailing newline is already there,
    the don't bother adding a new one.
    
    This improves a situation where Builder thinks there is a new-line
    added at the end of a file that is unmodified.

 src/libide/buffers/ide-buffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/buffers/ide-buffer.c b/src/libide/buffers/ide-buffer.c
index fee1d6cd3..20eb43b6b 100644
--- a/src/libide/buffers/ide-buffer.c
+++ b/src/libide/buffers/ide-buffer.c
@@ -2268,7 +2268,8 @@ ide_buffer_get_content (IdeBuffer *self)
        * The unsaved files will restore to a buffer, for which \n is acceptable.
        */
       len = strlen (text);
-      if (gtk_source_buffer_get_implicit_trailing_newline (GTK_SOURCE_BUFFER (self)))
+      if (gtk_source_buffer_get_implicit_trailing_newline (GTK_SOURCE_BUFFER (self)) &&
+          (len == 0 || text[len - 1] != '\n'))
         {
           if (!ide_buffer_can_do_newline_hack (self, len))
             {