[gnome-builder] snippets: sort matching snippets by length

[Christian Hergert <chergert src gnome org>]

commit 4e1874f3c0dc1c3c46f1e8057a6985009f503f21
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 12 17:13:22 2018 -0700

    snippets: sort matching snippets by length
    
    This makes things more predictable as it used to be before porting this to
    the new completion engine.

 src/plugins/snippets/ide-snippet-model.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/src/plugins/snippets/ide-snippet-model.c b/src/plugins/snippets/ide-snippet-model.c
index a02907d5d..015564925 100644
--- a/src/plugins/snippets/ide-snippet-model.c
+++ b/src/plugins/snippets/ide-snippet-model.c
@@ -75,6 +75,20 @@ ide_snippet_model_new (IdeSnippetStorage *storage)
   return self;
 }
 
+static gint
+compare_items (gconstpointer a,
+               gconstpointer b)
+{
+  const IdeSnippetInfo *ai = *(const IdeSnippetInfo **)a;
+  const IdeSnippetInfo *bi = *(const IdeSnippetInfo **)b;
+
+  /* At this point, everything matches prefix, so we just want
+   * to use the shorter string.
+   */
+
+  return (gint)strlen (ai->name) - (gint)strlen (bi->name);
+}
+
 static void
 foreach_cb (IdeSnippetStorage    *storage,
             const IdeSnippetInfo *info,
@@ -101,6 +115,8 @@ ide_snippet_model_update (IdeSnippetModel *self)
 
   ide_snippet_storage_query (self->storage, self->language, self->prefix, foreach_cb, self);
 
+  g_ptr_array_sort (self->items, compare_items);
+
   if (old_len || self->items->len)
     g_list_model_items_changed (G_LIST_MODEL (self), 0, old_len, self->items->len);
 }