[iter] Fix filter rewinding

6 years ago · c1c122e7b3
parent b854d4ff46
commit c1c122e7b3
1 changed files with 1 additions and 1 deletions
--- a/src/hb-iter.hh
+++ b/src/hb-iter.hh
@ -433,7 +433,7 @@ struct hb_filter_iter_t :
  __item_t__ __item__ () const { return *it; }
  bool __more__ () const { return bool (it); }
  void __next__ () { do ++it; while (it && !hb_has (p.get (), hb_get (f.get (), *it))); }
-  void __prev__ () { --it; }
+  void __prev__ () { do --it; while (it && !hb_has (p.get (), hb_get (f.get (), *it))); }
  hb_filter_iter_t __end__ () const { return hb_filter_iter_t (it.end (), p, f); }
  bool operator != (const hb_filter_iter_t& o) const
  { return it != o.it || p != o.p || f != o.f; }