From ca3b27daf2a147ce944d90f13f4e4535f0696874 Mon Sep 17 00:00:00 2001
From: Arun Prakash Jana <engineerarun@gmail.com>
Date: Wed, 8 Aug 2018 05:04:34 +0530
Subject: [PATCH] Forward filtering optimization

---
 nnn.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nnn.c b/nnn.c
index 59750404..4d69047a 100644
--- a/nnn.c
+++ b/nnn.c
@@ -1158,7 +1158,12 @@ filterentries(char *path)
 				wln[len] = (wchar_t)*ch;
 				wln[++len] = '\0';
 				wcstombs(ln, wln, REGEX_MAX);
-				ndents = total;
+
+				/* Forward-filtering optimization:
+				 * - new matches can only be a subset of current matches.
+				 */
+				/* ndents = total; */
+
 				if (matches(pln) == -1)
 					continue;