From 88e6ce23c9a114031db7c5c2b49af615e77f06ae Mon Sep 17 00:00:00 2001
From: luccioman <luccioman@users.noreply.github.com>
Date: Tue, 17 Jul 2018 07:36:39 +0200
Subject: [PATCH] Consistently render empty facets and facets having only
 entries at zero

---
 htroot/yacysearchtrailer.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/htroot/yacysearchtrailer.java b/htroot/yacysearchtrailer.java
index bdbc5bb82..f7089e162 100644
--- a/htroot/yacysearchtrailer.java
+++ b/htroot/yacysearchtrailer.java
@@ -351,7 +351,8 @@ public class yacysearchtrailer {
                 name = navigatorIterator.next();
                 count = navi.get(name);
                 if (count == 0) {
-                    break;
+                	/* This entry has a zero count, but the next may be positive */
+                    continue;
                 }
 
                 rawNav = navi.getQueryModifier(name);
@@ -381,6 +382,10 @@ public class yacysearchtrailer {
                 prop.put("navs_" + ni + "_element_" + i + "_nl", 1);
                 i++;
             }
+            if(i == 0) {
+            	/* The navigator has only entries with value==0 : this is equivalent to empty navigator */
+            	continue;
+            }
             prop.put("navs_" + ni + "_element", i);
             prop.put("navs_" + ni + "_count", i);
             i--;