[gtksourceview] CompletionModel: add a comment for get_providers()

[SÃbastien Wilmet <swilmet src gnome org>]

commit a5a805a46005fcaccc1386423321d2fa3c85b2ad
Author: SÃbastien Wilmet <swilmet gnome org>
Date:   Mon Jan 14 16:32:09 2013 +0100

    CompletionModel: add a comment for get_providers()

 gtksourceview/gtksourcecompletionmodel.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcecompletionmodel.c b/gtksourceview/gtksourcecompletionmodel.c
index 0395796..cabef4e 100644
--- a/gtksourceview/gtksourcecompletionmodel.c
+++ b/gtksourceview/gtksourcecompletionmodel.c
@@ -1489,6 +1489,9 @@ gtk_source_completion_model_iter_last (GtkSourceCompletionModel *model,
 	}
 }
 
+/* Get all the providers (visible and hidden), sorted by priority in descending
+ * order (the highest priority first).
+ */
 GList *
 gtk_source_completion_model_get_providers (GtkSourceCompletionModel *model)
 {