From 42061a7b66a9934e44edf7b74923464ff9d6f62a Mon Sep 17 00:00:00 2001
From: Brian Ferguson <ferguson.brian@gmail.com>
Date: Tue, 4 Sep 2012 09:33:25 -0600
Subject: [PATCH] Fixed infinite loop with RegExpSubstitute when Substitute has
 a empty string. http://rainmeter.net/forum/viewtopic.php?f=14&t=13377
 http://rainmeter.net/forum/viewtopic.php?f=14&t=10954

---
 Library/Measure.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Library/Measure.cpp b/Library/Measure.cpp
index aefe670c..d7a6980a 100644
--- a/Library/Measure.cpp
+++ b/Library/Measure.cpp
@@ -246,6 +246,11 @@ const WCHAR* CMeasure::CheckSubstitute(const WCHAR* buffer)
 				int flags = PCRE_UTF8;
 				int offset = 0;
 
+				if (m_Substitute[i] == L"")
+				{
+					m_Substitute[i] = L"^$";
+				}
+
 				re = pcre_compile(
 					ConvertToUTF8(m_Substitute[i].c_str()).c_str(),   // the pattern
 					flags,						// default options