From f794cea6e7d095010aaa82e0108acaf511184cf8 Mon Sep 17 00:00:00 2001
From: djcb <djcb@djcbsoftware.nl>
Date: Sat, 4 Nov 2017 14:32:41 +0200
Subject: [PATCH] parser: small regex optimization

---
 lib/parser/parser.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/parser/parser.cc b/lib/parser/parser.cc
index 78413f1f..17f331ce 100644
--- a/lib/parser/parser.cc
+++ b/lib/parser/parser.cc
@@ -104,7 +104,11 @@ regex (const ProcIface::FieldInfoVec& fields, const std::string& v,
 								 field.id, term)}));
 			}
 		}
-		return tree;
+
+		if (tree.children.empty())
+			return empty();
+		else
+			return tree;
 
 	} catch (...) {
 		// fallback