[gnome-builder] project-tree: use g_utf8_collate_key_for_filename() when sorting

[Christian Hergert <chergert src gnome org>]

commit 2583edf47f0ddc7aa0b0ad5227f157bd2dc6ce6d
Author: Christian Hergert <christian hergert me>
Date:   Thu Apr 16 01:25:19 2015 -0700

    project-tree: use g_utf8_collate_key_for_filename() when sorting
    
    This handles special cases for . to make sure .c and .h files will
    show up next to each other.

 src/project-tree/gb-project-tree-builder.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/project-tree/gb-project-tree-builder.c b/src/project-tree/gb-project-tree-builder.c
index a194c45..faca609 100644
--- a/src/project-tree/gb-project-tree-builder.c
+++ b/src/project-tree/gb-project-tree-builder.c
@@ -137,8 +137,8 @@ sort_files (IdeProjectItem *item_a,
   display_name_a = g_file_info_get_display_name (file_info_a);
   display_name_b = g_file_info_get_display_name (file_info_b);
 
-  casefold_a = g_utf8_casefold (display_name_a, -1);
-  casefold_b = g_utf8_casefold (display_name_b, -1);
+  casefold_a = g_utf8_collate_key_for_filename (display_name_a, -1);
+  casefold_b = g_utf8_collate_key_for_filename (display_name_b, -1);
 
   return g_utf8_collate (casefold_a, casefold_b);
 }