diff --git a/auto/generate_test_runner.rb b/auto/generate_test_runner.rb
index 452fbc82..62eaf95f 100755
--- a/auto/generate_test_runner.rb
+++ b/auto/generate_test_runner.rb
@@ -407,43 +407,43 @@ def create_reset(output)
   end
 
   def create_run_test(output)
-    output.puts("/*=======Test Runner Used To Run Each Test=====*/")
-    output.puts("static void run_test(UnityTestFunction func, const char* name, UNITY_LINE_TYPE line_num)")
-    output.puts("{")
-    output.puts("    Unity.CurrentTestName = name;")
-    output.puts("    Unity.CurrentTestLineNumber = (UNITY_UINT) line_num;")
-    output.puts("#ifdef UNITY_USE_COMMAND_LINE_ARGS")
-    output.puts("    if (!UnityTestMatches())")
-    output.puts("        return;")
-    output.puts("#endif")
-    output.puts("    Unity.NumberOfTests++;")
-    output.puts("    UNITY_CLR_DETAILS();")
-    output.puts("    UNITY_EXEC_TIME_START();")
-    output.puts("    CMock_Init();")
-    output.puts("    if (TEST_PROTECT())")
-    output.puts("    {")
+    output.puts('/*=======Test Runner Used To Run Each Test=====*/')
+    output.puts('static void run_test(UnityTestFunction func, const char* name, UNITY_LINE_TYPE line_num)')
+    output.puts('{')
+    output.puts('    Unity.CurrentTestName = name;')
+    output.puts('    Unity.CurrentTestLineNumber = (UNITY_UINT) line_num;')
+    output.puts('#ifdef UNITY_USE_COMMAND_LINE_ARGS')
+    output.puts('    if (!UnityTestMatches())')
+    output.puts('        return;')
+    output.puts('#endif')
+    output.puts('    Unity.NumberOfTests++;')
+    output.puts('    UNITY_CLR_DETAILS();')
+    output.puts('    UNITY_EXEC_TIME_START();')
+    output.puts('    CMock_Init();')
+    output.puts('    if (TEST_PROTECT())')
+    output.puts('    {')
     if @options[:plugins].include?(:cexception)
-      output.puts("        volatile CEXCEPTION_T e;")
-      output.puts("        Try {")
+      output.puts('        volatile CEXCEPTION_T e;')
+      output.puts('        Try {')
       output.puts("            #{@options[:setup_name]}();")
-      output.puts("            func();")
-      output.puts("        } Catch(e) {")
-      output.puts("            TEST_ASSERT_EQUAL_HEX32_MESSAGE(CEXCEPTION_NONE, e, \"Unhandled Exception!\");")
-      output.puts("        }")
+      output.puts('            func();')
+      output.puts('        } Catch(e) {')
+      output.puts('            TEST_ASSERT_EQUAL_HEX32_MESSAGE(CEXCEPTION_NONE, e, "Unhandled Exception!");')
+      output.puts('        }')
     else
       output.puts("        #{@options[:setup_name]}();")
-      output.puts("        func();")
+      output.puts('        func();')
     end
-    output.puts("    }")
-    output.puts("    if (TEST_PROTECT())")
-    output.puts("    {")
+    output.puts('    }')
+    output.puts('    if (TEST_PROTECT())')
+    output.puts('    {')
     output.puts("        #{@options[:teardown_name]}();")
-    output.puts("        CMock_Verify();")
-    output.puts("    }")
-    output.puts("    CMock_Destroy();")
-    output.puts("    UNITY_EXEC_TIME_STOP();")
-    output.puts("    UnityConcludeTest();")
-    output.puts("}")
+    output.puts('        CMock_Verify();')
+    output.puts('    }')
+    output.puts('    CMock_Destroy();')
+    output.puts('    UNITY_EXEC_TIME_STOP();')
+    output.puts('    UnityConcludeTest();')
+    output.puts('}')
   end
 
   def create_args_wrappers(output, tests)
@@ -465,7 +465,7 @@ def create_args_wrappers(output, tests)
   def create_warning_test(output, filename, tests)
     if count_tests(tests) == 0
       warning_test = {
-        :test => "test_empty_warning",
+        :test => 'test_empty_warning',
         :line_number => 0
       }
       output.puts("\n/*=======Warning Test=====*/")
@@ -475,7 +475,7 @@ def create_warning_test(output, filename, tests)
       output.puts("}\n")
       tests = [warning_test]
     end
-    return tests
+    tests
   end
 
   def create_shuffle_tests(output)
diff --git a/examples/unity_config.h b/examples/unity_config.h
index 41195c2b..be746e7f 100644
--- a/examples/unity_config.h
+++ b/examples/unity_config.h
@@ -250,4 +250,12 @@
  */
 /* #define UNITY_INCLUDE_EXEC_TIME */
 
+/* Define this macro to redefine what the UnityPrintChar() function considers
+ * a printable character.
+ *
+ * Example, for printing UTF-8:
+ * #define UNITY_IS_PRINTABLE_CHAR(c) ((128 <= (c)) && ((c) <= 255))
+*/
+/* #define UNITY_IS_PRINTABLE_CHAR(c) ((32 <= (c)) && ((c) <= 126)) */
+
 #endif /* UNITY_CONFIG_H */
diff --git a/src/unity.c b/src/unity.c
index d8a8dd35..68e833cc 100644
--- a/src/unity.c
+++ b/src/unity.c
@@ -7,6 +7,8 @@
 
 #include "unity.h"
 
+#include <stdbool.h>
+
 #ifndef UNITY_PROGMEM
 #define UNITY_PROGMEM
 #endif
@@ -88,8 +90,14 @@ static const char UNITY_PROGMEM UnityStrDetail2Name[]            = " " UNITY_DET
 /* Local helper function to print characters. */
 static void UnityPrintChar(const char* pch)
 {
+#ifdef UNITY_IS_PRINTABLE_CHAR
+    const int isPrintable = UNITY_IS_PRINTABLE_CHAR(*pch);
+#else
+    const int isPrintable = ((32 <= *pch) && (*pch <= 126));
+#endif
+
     /* printable characters plus CR & LF are printed */
-    if ((*pch <= 126) && (*pch >= 32))
+    if (isPrintable)
     {
         UNITY_OUTPUT_CHAR(*pch);
     }
diff --git a/test/rakefile b/test/rakefile
index 0bfa70c5..0bd2782c 100644
--- a/test/rakefile
+++ b/test/rakefile
@@ -19,6 +19,7 @@ TEMP_DIRS = [
 
 TEMP_DIRS.each do |dir|
   directory(dir)
+  CLEAN.include(File.join(dir, '*.*'))
   CLOBBER.include(dir)
 end
 
@@ -167,7 +168,7 @@ namespace :style do
 
   desc "Attempt to Autocorrect style"
   task :auto  => ['style:clean'] do
-    execute("rubocop ../auto ../examples ../extras --auto-correct --config .rubocop.yml")
+    execute("rubocop ../auto ../examples ../extras --autocorrect --config .rubocop.yml")
     report "Autocorrected What We Could."
   end