diff --git a/source/tests/CarlaString.cpp b/source/tests/CarlaString.cpp
index b4b637fc6..90e8ed2a3 100644
--- a/source/tests/CarlaString.cpp
+++ b/source/tests/CarlaString.cpp
@@ -1,6 +1,6 @@
 /*
- * Carla Tests
- * Copyright (C) 2013 Filipe Coelho <falktx@falktx.com>
+ * CarlaString Tests
+ * Copyright (C) 2013-2014 Filipe Coelho <falktx@falktx.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -27,6 +27,7 @@ int main()
     assert(str.isEmpty());
     assert(str.contains(""));
     assert(str.contains("\0"));
+    assert(str.isEmpty() == !str.isNotEmpty());
     assert(! str.isNotEmpty());
     assert(! str.contains(" "));
     assert(! str.isDigit(0));
@@ -35,6 +36,7 @@ int main()
     str = "5";
     assert(str.length() == 1);
     assert(str.length() == std::strlen("5"));
+    assert(str.isEmpty() == !str.isNotEmpty());
     assert(str.isNotEmpty());
     assert(str.contains(""));
     assert(str.contains("5"));
@@ -147,10 +149,27 @@ int main()
     str2  = "test2";
     str2 += ".0";
 
+    // startsWith, contains and endsWith
     CarlaString str3("1.23_  ?test2.0 final");
+    assert(str3.startsWith('1'));
+    assert(str3.startsWith("1"));
+    assert(str3.startsWith("1.23_ "));
+    assert(str3.contains("1"));
+    assert(str3.contains("?test"));
+    assert(str3.contains("final"));
+    assert(! str3.contains("\n"));
+    assert(! str3.contains("\t"));
+    assert(str3.endsWith('l'));
+    assert(str3.endsWith("l"));
+    assert(str3.endsWith(" final"));
 
     CarlaString str4 = "" + str1 + str2 + " final";
+    assert(str4.contains(str1));
+    assert(str4.contains(str2));
+    assert(str4.startsWith(str1));
+    assert(! str4.startsWith(str2));
 
+    // length and content
     assert(str3 == "1.23_  ?test2.0 final");
     assert(str3 == str4);
     assert(str3.length() == str4.length());
@@ -160,6 +179,64 @@ int main()
     assert(str5 == "ola _51ah0x910_ 6");
     assert(str5.length() == std::strlen("ola _51ah0x910_ 6"));
 
+    // find, rfind
+    bool found;
+    assert(str5.find('o', &found) == 0);
+    assert(found);
+    assert(str5.find('l', &found) == 1);
+    assert(found);
+    assert(str5.find('5', &found) == 5);
+    assert(found);
+    assert(str5.find('6', &found) == str5.length()-1);
+    assert(found);
+
+    assert(str5.rfind('6', &found) == str5.length()-1);
+    assert(found);
+    assert(str5.rfind(' ', &found) == str5.length()-2);
+    assert(found);
+    assert(str5.rfind('x', &found) == 10);
+    assert(found);
+
+    assert(str5.find('\0', &found) == str5.length());
+    assert(! found);
+    assert(str5.find('Z', &found) == str5.length());
+    assert(! found);
+    assert(str5.rfind('A', &found) == str5.length());
+    assert(! found);
+
+    assert(str5.find("o", &found) == 0);
+    assert(found);
+    assert(str5.find("ola", &found) == 0);
+    assert(found);
+    assert(str5.find("la", &found) == 1);
+    assert(found);
+    assert(str5.find(" ", &found) == 3);
+    assert(found);
+    assert(str5.find("6", &found) == str5.length()-1);
+    assert(found);
+    assert(str5.find(" 6", &found) == str5.length()-2);
+    assert(found);
+
+    assert(str5.rfind("6", &found) == str5.length()-1);
+    assert(found);
+    assert(str5.rfind(" ", &found) == str5.length()-2);
+    assert(found);
+    assert(str5.rfind(" 6", &found) == str5.length()-2);
+    assert(found);
+    assert(str5.rfind("ola", &found) == 0);
+    assert(found);
+    assert(str5.rfind("la ", &found) == 1);
+    assert(found);
+
+    assert(str5.find("", &found) == str5.length());
+    assert(! found);
+    assert(str5.find("Zoom", &found) == str5.length());
+    assert(! found);
+    assert(str5.rfind("", &found) == str5.length());
+    assert(! found);
+    assert(str5.rfind("haha!", &found) == str5.length());
+    assert(! found);
+
     printf("FINAL: \"%s\"\n", (const char*)str5);
 
     // clear
diff --git a/source/tests/Makefile b/source/tests/Makefile
index 2060359b0..7895cebfe 100644
--- a/source/tests/Makefile
+++ b/source/tests/Makefile
@@ -23,8 +23,9 @@ ANSI_FLAGS += -L../backend -lcarla_standalone2
 
 # --------------------------------------------------------------
 
-TARGETS  = ansi-pedantic-test_c ansi-pedantic-test_c99 ansi-pedantic-test_cxx ansi-pedantic-test_cxx11
-# TARGETS += CarlaString Print RtList Utils
+# TARGETS  = ansi-pedantic-test_c ansi-pedantic-test_c99 ansi-pedantic-test_cxx ansi-pedantic-test_cxx11
+TARGETS += CarlaString
+# Print RtList Utils
 
 all: $(TARGETS)
 
@@ -46,7 +47,7 @@ ansi-pedantic-test_cxx11: ansi-pedantic-test.c ../backend/Carla*.h
 
 CarlaString: CarlaString.cpp ../utils/CarlaString.hpp
 	$(CXX) $< $(BUILD_CXX_FLAGS) $(LINK_FLAGS) -o $@
-# 	valgrind ./CarlaString
+	valgrind ./CarlaString
 
 DISTRHO: DISTRHO.cpp ../modules/distrho/*.hpp ../modules/distrho/src/*.cpp
 	$(CXX) $< ../modules/dgl.a $(BUILD_CXX_FLAGS) -I../modules/distrho -I../modules/carla_native/nekobi $(LINK_FLAGS) $(DGL_LIBS) -lpthread -o $@
diff --git a/source/utils/CarlaString.hpp b/source/utils/CarlaString.hpp
index e6a8bca51..331c6ea0d 100644
--- a/source/utils/CarlaString.hpp
+++ b/source/utils/CarlaString.hpp
@@ -262,7 +262,7 @@ public:
         if (fBufferLen < prefixLen)
             return false;
 
-        return (std::strncmp(fBuffer + (fBufferLen-prefixLen), prefix, prefixLen) == 0);
+        return (std::strncmp(fBuffer, prefix, prefixLen) == 0);
     }
 
     /*
@@ -272,7 +272,7 @@ public:
     {
         CARLA_SAFE_ASSERT_RETURN(c != '\0', false);
 
-        return (fBufferLen > 0 && fBuffer[fBufferLen] == c);
+        return (fBufferLen > 0 && fBuffer[fBufferLen-1] == c);
     }
 
     /*
@@ -324,7 +324,7 @@ public:
      */
     size_t find(const char* const strBuf, bool* const found = nullptr) const
     {
-        if (fBufferLen == 0 || strBuf != nullptr || strBuf[0] != '\0')
+        if (fBufferLen == 0 || strBuf == nullptr || strBuf[0] == '\0')
         {
             if (found != nullptr)
                 *found = false;
@@ -338,7 +338,7 @@ public:
             if (ret < 0)
             {
                 // should never happen!
-                carla_stderr2("Carla assertion failure: \"ret >= 0\" in file %s, line %i, value %i", __FILE__, __LINE__, ret);
+                carla_safe_assert_int("ret >= 0", __FILE__, __LINE__, int(ret));
 
                 if (found != nullptr)
                     *found = false;
@@ -395,12 +395,14 @@ public:
         if (fBufferLen == 0 || strBuf == nullptr || strBuf[0] == '\0')
             return fBufferLen;
 
-        size_t ret = fBufferLen+1;
+        const size_t strBufLen(std::strlen(strBuf));
+
+        size_t ret = fBufferLen;
         const char* tmpBuf = fBuffer;
 
         for (size_t i=0; i < fBufferLen; ++i)
         {
-            if (std::strstr(tmpBuf, strBuf) == nullptr)
+            if (std::strstr(tmpBuf+1, strBuf) == nullptr && std::strncmp(tmpBuf, strBuf, strBufLen) == 0)
             {
                 if (found != nullptr)
                     *found = true;
@@ -411,7 +413,7 @@ public:
             ++tmpBuf;
         }
 
-        return (ret > fBufferLen) ? fBufferLen : fBufferLen-ret;
+        return fBufferLen-ret;
     }
 
     /*
@@ -526,7 +528,13 @@ public:
 
     char& operator[](const size_t pos) const noexcept
     {
-        return fBuffer[pos];
+        if (pos < fBufferLen)
+            return fBuffer[pos];
+
+        static char rfallback;
+        rfallback = '\0';
+        carla_safe_assert("pos < fBufferLen", __FILE__, __LINE__);
+        return rfallback;
     }
 
     bool operator==(const char* const strBuf) const