From 8707ae6fd4e0378014240f57e0810504d7243714 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Mon, 30 Jul 2018 10:00:38 +0200
Subject: [PATCH] Songfilter: allow redundant parantheses

---
 src/SongFilter.cxx | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/SongFilter.cxx b/src/SongFilter.cxx
index a2a009649..d47926726 100644
--- a/src/SongFilter.cxx
+++ b/src/SongFilter.cxx
@@ -320,8 +320,15 @@ SongFilter::ParseExpression(const char *&s, bool fold_case)
 
 	s = StripLeft(s + 1);
 
-	if (*s == '(')
+	if (*s == '(') {
+		auto first = ParseExpression(s, fold_case);
+		if (*s == ')') {
+			++s;
+			return first;
+		}
+
 		throw std::runtime_error("Nested expressions not yet implemented");
+	}
 
 	auto type = ExpectFilterType(s);