From 23e56e088a721863cfdef4f027fb66eecbd77457 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sat, 25 Jul 2015 17:36:46 +0200
Subject: [PATCH] Fix broken sentence

---
 src/hb-set-private.hh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/hb-set-private.hh b/src/hb-set-private.hh
index bba40151..3c302b1d 100644
--- a/src/hb-set-private.hh
+++ b/src/hb-set-private.hh
@@ -36,7 +36,15 @@
  * "approximate member query".  Conceptually these are like Bloom
  * Filter and Quotient Filter, however, much smaller, faster, and
  * designed to fit the requirements of our uses for glyph coverage
- * queries.  As a result, our filters have much higher.
+ * queries.
+ *
+ * Our filters are highly accurate if the lookup covers fairly local
+ * set of glyphs, but fully flooded and ineffective if coverage is
+ * all over the place.
+ *
+ * The frozen-set can be used instead of a digest, to trade more
+ * memory for 100% accuracy, but in practice, that doesn't look like
+ * an attractive trade-off.
  */
 
 template <typename mask_t, unsigned int shift>
-- 
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