1 files changed, 7 insertions, 4 deletions
diff --git a/src/org/traccar/helper/PatternBuilder.java b/src/org/traccar/helper/PatternBuilder.java
index 5d9d3afa8..4ce4295dd 100644
--- a/src/org/traccar/helper/PatternBuilder.java
+++ b/src/org/traccar/helper/PatternBuilder.java
@@ -33,6 +33,8 @@ public class PatternBuilder {
     }
 
     public PatternBuilder expression(String s) {
+        s = s.replaceAll("\\|$", "\\\\|"); // special case for delimiter
+
         fragments.add(s);
         return this;
     }
@@ -63,6 +65,11 @@ public class PatternBuilder {
         return this;
     }
 
+    public PatternBuilder or() {
+        fragments.add("|");
+        return this;
+    }
+
     public PatternBuilder groupBegin() {
         return expression("(?:");
     }
@@ -75,10 +82,6 @@ public class PatternBuilder {
         return expression(")" + s);
     }
 
-    public PatternBuilder or() {
-        return expression("|");
-    }
-
     public Pattern compile() {
         return Pattern.compile(toString(), Pattern.DOTALL);
     }