[gtksourceview] Pango TR #29 mostly done, add TODO to see if the code can be simplified

[Sébastien Wilmet <swilmet src gnome org>]

commit 753af65c5fed44db6fe8ce8c858c0943ffa703a4
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Sep 1 12:11:57 2017 +0200

    Pango TR #29 mostly done, add TODO to see if the code can be simplified

 gtksourceview/gtksourceiter.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourceiter.c b/gtksourceview/gtksourceiter.c
index 504e6f2..be0293a 100644
--- a/gtksourceview/gtksourceiter.c
+++ b/gtksourceview/gtksourceiter.c
@@ -37,6 +37,12 @@
  * https://bugzilla.gnome.org/show_bug.cgi?id=111503
  */
 
+/* TODO: the following Pango bug is now mostly done, see if the code here can be
+ * simplified.
+ * https://bugzilla.gnome.org/show_bug.cgi?id=97545
+ * "Make pango_default_break follow Unicode TR #29"
+ */
+
 /* Go to the end of the next or current "full word". A full word is a group of
  * non-blank chars.
  * In other words, this function is the same as the 'E' Vim command.