v2.2.0v2.2.0

9 files changed, 219 insertions, 144 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4bb365ef..f42f57e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ if(NOT DEFINED PROJECT_NAME)
   set(NOT_SUBPROJECT ON)
 endif()
 
-project(Catch2 LANGUAGES CXX VERSION 2.1.2)
+project(Catch2 LANGUAGES CXX VERSION 2.2.0)
 
 include(GNUInstallDirs)
 
diff --git a/README.md b/README.md
index fa2dba5c..e07f26e7 100644
--- a/README.md
+++ b/README.md
@@ -5,9 +5,9 @@
 [![Build Status](https://travis-ci.org/catchorg/Catch2.svg?branch=master)](https://travis-ci.org/catchorg/Catch2)
 [![Build status](https://ci.appveyor.com/api/projects/status/github/catchorg/Catch2?svg=true)](https://ci.appveyor.com/project/catchorg/catch2)
 [![codecov](https://codecov.io/gh/catchorg/Catch2/branch/master/graph/badge.svg)](https://codecov.io/gh/catchorg/Catch2)
-[![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://wandbox.org/permlink/6O2wo5BOvVeUeKQe)
+[![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://wandbox.org/permlink/vOtfjd7LKmcj4JqD)
 
-<a href="https://github.com/catchorg/Catch2/releases/download/v2.1.2/catch.hpp">The latest version of the single header can be downloaded directly using this link</a>
+<a href="https://github.com/catchorg/Catch2/releases/download/v2.2.0/catch.hpp">The latest version of the single header can be downloaded directly using this link</a>
 
 ## Catch2 is released!
 
diff --git a/conanfile.py b/conanfile.py
index ea66ccb1..6d24a73c 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -4,7 +4,7 @@ from conans import ConanFile
 
 class CatchConan(ConanFile):
     name = "Catch"
-    version = "2.1.2"
+    version = "2.2.0"
     description = "A modern, C++-native, header-only, framework for unit-tests, TDD and BDD"
     author = "philsquared"
     generators = "cmake"
diff --git a/docs/release-notes.md b/docs/release-notes.md
index dc9f435c..ca9330db 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -1,5 +1,25 @@
 <a id="top"></a>
 
+# 2.2.0
+
+## Fixes
+* Hidden tests are not listed by default when listing tests (#1175)
+  * This makes `catch_discover_tests` CMake script work better
+* Fixed regression that meant `<windows.h>` could potentially not be included properly (#1197)
+* Fixed installing `Catch2ConfigVersion.cmake` when Catch2 is a subproject.
+
+## Improvements
+* Added an option to warn (+ exit with error) when no tests were ran (#1158)
+  * Use as `-w NoTests`
+* Added provisional support for Emscripten (#1114)
+* [Added a way to override the fallback stringifier](https://github.com/catchorg/Catch2/blob/master/docs/configuration.md#fallback-stringifier) (#1024)
+  * This allows project's own stringification machinery to be easily reused for Catch
+* `Catch::Session::run()` now accepts `char const * const *`, allowing it to accept array of string literals (#1031, #1178)
+  * The embedded version of Clara was bumped to v1.1.3
+* Various minor performance improvements
+* Added support for DJGPP DOS crosscompiler (#1206)
+
+
 # 2.1.2
 
 ## Fixes
diff --git a/include/catch.hpp b/include/catch.hpp
index a6f8d3ba..ebad166e 100644
--- a/include/catch.hpp
+++ b/include/catch.hpp
@@ -10,8 +10,8 @@
 #define TWOBLUECUBES_CATCH_HPP_INCLUDED
 
 #define CATCH_VERSION_MAJOR 2
-#define CATCH_VERSION_MINOR 1
-#define CATCH_VERSION_PATCH 2
+#define CATCH_VERSION_MINOR 2
+#define CATCH_VERSION_PATCH 0
 
 #ifdef __clang__
 #    pragma clang system_header
diff --git a/include/internal/catch_version.cpp b/include/internal/catch_version.cpp
index ab50285a..aab90cf0 100644
--- a/include/internal/catch_version.cpp
+++ b/include/internal/catch_version.cpp
@@ -37,7 +37,7 @@ namespace Catch {
     }
 
     Version const& libraryVersion() {
-        static Version version( 2, 1, 2, "", 0 );
+        static Version version( 2, 2, 0, "", 0 );
         return version;
     }
 
diff --git a/single_include/catch.hpp b/single_include/catch.hpp
index 882699ea..c36a9878 100644
--- a/single_include/catch.hpp
+++ b/single_include/catch.hpp
@@ -1,6 +1,6 @@
 /*
- *  Catch v2.1.2
- *  Generated: 2018-02-09 17:05:21.506253
+ *  Catch v2.2.0
+ *  Generated: 2018-03-07 10:56:32.217228
  *  ----------------------------------------------------------
  *  This file has been merged from multiple headers. Please don't edit it directly
  *  Copyright (c) 2018 Two Blue Cubes Ltd. All rights reserved.
@@ -14,8 +14,8 @@
 
 
 #define CATCH_VERSION_MAJOR 2
-#define CATCH_VERSION_MINOR 1
-#define CATCH_VERSION_PATCH 2
+#define CATCH_VERSION_MINOR 2
+#define CATCH_VERSION_PATCH 0
 
 #ifdef __clang__
 #    pragma clang system_header
@@ -148,13 +148,15 @@ namespace Catch {
 #endif // __clang__
 
 ////////////////////////////////////////////////////////////////////////////////
-// We know some environments not to support full POSIX signals
-#if defined(__CYGWIN__) || defined(__QNX__)
-
-#   if !defined(CATCH_CONFIG_POSIX_SIGNALS)
-#       define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS
-#   endif
+// Assume that non-Windows platforms support posix signals by default
+#if !defined(CATCH_PLATFORM_WINDOWS)
+    #define CATCH_INTERNAL_CONFIG_POSIX_SIGNALS
+#endif
 
+////////////////////////////////////////////////////////////////////////////////
+// We know some environments not to support full POSIX signals
+#if defined(__CYGWIN__) || defined(__QNX__) || defined(__EMSCRIPTEN__) || defined(__DJGPP__)
+    #define CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS
 #endif
 
 #ifdef __OS400__
@@ -192,6 +194,13 @@ namespace Catch {
 
 ////////////////////////////////////////////////////////////////////////////////
 
+// DJGPP
+#ifdef __DJGPP__
+#  define CATCH_INTERNAL_CONFIG_NO_WCHAR
+#endif // __DJGPP__
+
+////////////////////////////////////////////////////////////////////////////////
+
 // Use of __COUNTER__ is suppressed during code analysis in
 // CLion/AppCode 2017.2.x and former, because __COUNTER__ is not properly
 // handled by it.
@@ -208,11 +217,15 @@ namespace Catch {
 #   define CATCH_CONFIG_WINDOWS_SEH
 #endif
 // This is set by default, because we assume that unix compilers are posix-signal-compatible by default.
-#if !defined(CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_POSIX_SIGNALS)
+#if defined(CATCH_INTERNAL_CONFIG_POSIX_SIGNALS) && !defined(CATCH_INTERNAL_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_NO_POSIX_SIGNALS) && !defined(CATCH_CONFIG_POSIX_SIGNALS)
 #   define CATCH_CONFIG_POSIX_SIGNALS
 #endif
+// This is set by default, because we assume that compilers with no wchar_t support are just rare exceptions.
+#if !defined(CATCH_INTERNAL_CONFIG_NO_WCHAR) && !defined(CATCH_CONFIG_NO_WCHAR) && !defined(CATCH_CONFIG_WCHAR)
+#   define CATCH_CONFIG_WCHAR
+#endif
 
-#if defined(CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_INTERNAL_CONFIG_NO_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS)
+#if defined(CATCH_INTERNAL_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_CONFIG_NO_CPP17_UNCAUGHT_EXCEPTIONS) && !defined(CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS)
 #  define CATCH_CONFIG_CPP17_UNCAUGHT_EXCEPTIONS
 #endif
 
@@ -443,16 +456,20 @@ namespace Catch {
     public: // substrings and searches
         auto substr( size_type start, size_type size ) const noexcept -> StringRef;
 
+        // Returns the current start pointer.
+        // Note that the pointer can change when if the StringRef is a substring
+        auto currentData() const noexcept -> char const*;
+
     private: // ownership queries - may not be consistent between calls
         auto isOwned() const noexcept -> bool;
         auto isSubstring() const noexcept -> bool;
-        auto data() const noexcept -> char const*;
     };
 
     auto operator + ( StringRef const& lhs, StringRef const& rhs ) -> std::string;
     auto operator + ( StringRef const& lhs, char const* rhs ) -> std::string;
     auto operator + ( char const* lhs, StringRef const& rhs ) -> std::string;
 
+    auto operator += ( std::string& lhs, StringRef const& sr ) -> std::string&;
     auto operator << ( std::ostream& os, StringRef const& sr ) -> std::ostream&;
 
     inline auto operator "" _sr( char const* rawChars, std::size_t size ) noexcept -> StringRef {
@@ -484,13 +501,13 @@ auto makeTestInvoker( void (C::*testAsMethod)() ) noexcept -> ITestInvoker* {
 }
 
 struct NameAndTags {
-    NameAndTags( StringRef name_ = StringRef(), StringRef tags_ = StringRef() ) noexcept;
+    NameAndTags( StringRef const& name_ = StringRef(), StringRef const& tags_ = StringRef() ) noexcept;
     StringRef name;
     StringRef tags;
 };
 
 struct AutoReg : NonCopyable {
-    AutoReg( ITestInvoker* invoker, SourceLineInfo const& lineInfo, StringRef classOrMethod, NameAndTags const& nameAndTags ) noexcept;
+    AutoReg( ITestInvoker* invoker, SourceLineInfo const& lineInfo, StringRef const& classOrMethod, NameAndTags const& nameAndTags ) noexcept;
     ~AutoReg();
 };
 
@@ -753,8 +770,13 @@ namespace Catch {
         std::string convertUnknownEnumToString( E e );
 
         template<typename T>
-        typename std::enable_if<!std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& ) {
+        typename std::enable_if<!std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
+#if !defined(CATCH_CONFIG_FALLBACK_STRINGIFIER)
+            (void)value;
             return Detail::unprintableString;
+#else
+            return CATCH_CONFIG_FALLBACK_STRINGIFIER(value);
+#endif
         }
         template<typename T>
         typename std::enable_if<std::is_enum<T>::value, std::string>::type convertUnstreamable( T const& value ) {
@@ -805,10 +827,12 @@ namespace Catch {
     struct StringMaker<std::string> {
         static std::string convert(const std::string& str);
     };
+#ifdef CATCH_CONFIG_WCHAR
     template<>
     struct StringMaker<std::wstring> {
         static std::string convert(const std::wstring& wstr);
     };
+#endif
 
     template<>
     struct StringMaker<char const *> {
@@ -818,6 +842,7 @@ namespace Catch {
     struct StringMaker<char *> {
         static std::string convert(char * str);
     };
+#ifdef CATCH_CONFIG_WCHAR
     template<>
     struct StringMaker<wchar_t const *> {
         static std::string convert(wchar_t const * str);
@@ -826,6 +851,7 @@ namespace Catch {
     struct StringMaker<wchar_t *> {
         static std::string convert(wchar_t * str);
     };
+#endif
 
     template<int SZ>
     struct StringMaker<char[SZ]> {
@@ -1739,6 +1765,7 @@ namespace Catch {
 
         Totals delta( Totals const& prevTotals ) const;
 
+        int error = 0;
         Counts assertions;
         Counts testCases;
     };
@@ -2696,7 +2723,7 @@ namespace Catch {
     class TestCase : public TestCaseInfo {
     public:
 
-        TestCase( ITestInvoker* testCase, TestCaseInfo const& info );
+        TestCase( ITestInvoker* testCase, TestCaseInfo&& info );
 
         TestCase withName( std::string const& _newName ) const;
 
@@ -2713,8 +2740,7 @@ namespace Catch {
 
     TestCase makeTestCase(  ITestInvoker* testCase,
                             std::string const& className,
-                            std::string const& name,
-                            std::string const& description,
+                            NameAndTags const& nameAndTags,
                             SourceLineInfo const& lineInfo );
 }
 
@@ -3144,7 +3170,8 @@ namespace Catch {
 
     struct WarnAbout { enum What {
         Nothing = 0x00,
-        NoAssertions = 0x01
+        NoAssertions = 0x01,
+        NoTests = 0x02
     }; };
 
     struct ShowDurations { enum OrNot {
@@ -3181,10 +3208,12 @@ namespace Catch {
         virtual bool includeSuccessfulResults() const = 0;
         virtual bool shouldDebugBreak() const = 0;
         virtual bool warnAboutMissingAssertions() const = 0;
+        virtual bool warnAboutNoTests() const = 0;
         virtual int abortAfter() const = 0;
         virtual bool showInvisibles() const = 0;
         virtual ShowDurations::OrNot showDurations() const = 0;
         virtual TestSpec const& testSpec() const = 0;
+        virtual bool hasTestFilters() const = 0;
         virtual RunTests::InWhatOrder runOrder() const = 0;
         virtual unsigned int rngSeed() const = 0;
         virtual int benchmarkResolutionMultiple() const = 0;
@@ -3262,9 +3291,11 @@ namespace Catch {
         std::string getProcessName() const;
 
         std::vector<std::string> const& getReporterNames() const;
+        std::vector<std::string> const& getTestsOrTags() const;
         std::vector<std::string> const& getSectionsToRun() const override;
 
         virtual TestSpec const& testSpec() const override;
+        bool hasTestFilters() const override;
 
         bool showHelp() const;
 
@@ -3274,6 +3305,7 @@ namespace Catch {
         std::string name() const override;
         bool includeSuccessfulResults() const override;
         bool warnAboutMissingAssertions() const override;
+        bool warnAboutNoTests() const override;
         ShowDurations::OrNot showDurations() const override;
         RunTests::InWhatOrder runOrder() const override;
         unsigned int rngSeed() const override;
@@ -3291,6 +3323,7 @@ namespace Catch {
 
         std::unique_ptr<IStream const> m_stream;
         TestSpec m_testSpec;
+        bool m_hasTestFilters = false;
     };
 
 } // end namespace Catch
@@ -4638,9 +4671,6 @@ namespace Catch {
 
 // start catch_fatal_condition.h
 
-#include <string>
-
-#if defined ( CATCH_PLATFORM_WINDOWS ) /////////////////////////////////////////
 // start catch_windows_h_proxy.h
 
 
@@ -4671,16 +4701,7 @@ namespace Catch {
 #endif // defined(CATCH_PLATFORM_WINDOWS)
 
 // end catch_windows_h_proxy.h
-
-#  if !defined ( CATCH_CONFIG_WINDOWS_SEH )
-
-namespace Catch {
-    struct FatalConditionHandler {
-        void reset();
-    };
-}
-
-#  else // CATCH_CONFIG_WINDOWS_SEH is defined
+#if defined( CATCH_CONFIG_WINDOWS_SEH )
 
 namespace Catch {
 
@@ -4699,19 +4720,7 @@ namespace Catch {
 
 } // namespace Catch
 
-#  endif // CATCH_CONFIG_WINDOWS_SEH
-
-#else // Not Windows - assumed to be POSIX compatible //////////////////////////
-
-#  if !defined(CATCH_CONFIG_POSIX_SIGNALS)
-
-namespace Catch {
-    struct FatalConditionHandler {
-        void reset();
-    };
-}
-
-#  else // CATCH_CONFIG_POSIX_SIGNALS is defined
+#elif defined ( CATCH_CONFIG_POSIX_SIGNALS )
 
 #include <signal.h>
 
@@ -4720,7 +4729,7 @@ namespace Catch {
     struct FatalConditionHandler {
 
         static bool isSet;
-        static struct sigaction oldSigActions[];// [sizeof(signalDefs) / sizeof(SignalDefs)];
+        static struct sigaction oldSigActions[];
         static stack_t oldSigStack;
         static char altStackMem[];
 
@@ -4733,9 +4742,15 @@ namespace Catch {
 
 } // namespace Catch
 
-#  endif // CATCH_CONFIG_POSIX_SIGNALS
+#else
+
+namespace Catch {
+    struct FatalConditionHandler {
+        void reset();
+    };
+}
 
-#endif // not Windows
+#endif
 
 // end catch_fatal_condition.h
 #include <string>
@@ -5016,9 +5031,9 @@ namespace Catch {
             expr = m_info.capturedExpression;
         else {
             expr.reserve( m_info.macroName.size() + m_info.capturedExpression.size() + 4 );
-            expr += m_info.macroName.c_str();
+            expr += m_info.macroName;
             expr += "( ";
-            expr += m_info.capturedExpression.c_str();
+            expr += m_info.capturedExpression;
             expr += " )";
         }
         return expr;
@@ -5081,7 +5096,7 @@ namespace Catch {
     using StringMatcher = Matchers::Impl::MatcherBase<std::string>;
 
     // This is the general overload that takes a any string matcher
-    // There is another overload, in catch_assertinhandler.h/.cpp, that only takes a string and infers
+    // There is another overload, in catch_assertionhandler.h/.cpp, that only takes a string and infers
     // the Equals matcher (so the header does not mention matchers)
     void handleExceptionMatchExpr( AssertionHandler& handler, StringMatcher const& matcher, StringRef matcherString  ) {
         std::string exceptionMessage = Catch::translateActiveException();
@@ -5119,7 +5134,7 @@ namespace Catch {
 //
 // See https://github.com/philsquared/Clara for more details
 
-// Clara v1.1.2
+// Clara v1.1.3
 
 
 #ifndef CATCH_CLARA_CONFIG_CONSOLE_WIDTH
@@ -5130,6 +5145,14 @@ namespace Catch {
 #define CATCH_CLARA_TEXTFLOW_CONFIG_CONSOLE_WIDTH CATCH_CLARA_CONFIG_CONSOLE_WIDTH
 #endif
 
+#ifndef CLARA_CONFIG_OPTIONAL_TYPE
+#ifdef __has_include
+#if __has_include(<optional>) && __cplusplus >= 201703L
+#define CLARA_CONFIG_OPTIONAL_TYPE std::optional
+#endif
+#endif
+#endif
+
 // ----------- #included from clara_textflow.hpp -----------
 
 // TextFlowCpp
@@ -5495,11 +5518,9 @@ namespace detail {
         std::vector<std::string> m_args;
 
     public:
-        Args( int argc, char *argv[] ) {
-            m_exeName = argv[0];
-            for( int i = 1; i < argc; ++i )
-                m_args.push_back( argv[i] );
-        }
+        Args( int argc, char const* const* argv )
+            : m_exeName(argv[0]),
+              m_args(argv + 1, argv + argc) {}
 
         Args( std::initializer_list<std::string> args )
         :   m_exeName( *args.begin() ),
@@ -5685,15 +5706,13 @@ namespace detail {
 
     protected:
         void enforceOk() const override {
-            // !TBD: If no exceptions, std::terminate here or something
-            switch( m_type ) {
-                case ResultBase::LogicError:
-                    throw std::logic_error( m_errorMessage );
-                case ResultBase::RuntimeError:
-                    throw std::runtime_error( m_errorMessage );
-                case ResultBase::Ok:
-                    break;
-            }
+
+            // Errors shouldn't reach this point, but if they do
+            // the actual error message will be in m_errorMessage
+            assert( m_type != ResultBase::LogicError );
+            assert( m_type != ResultBase::RuntimeError );
+            if( m_type != ResultBase::Ok )
+                std::abort();
         }
 
         std::string m_errorMessage; // Only populated if resultType is an error
@@ -5763,6 +5782,16 @@ namespace detail {
             return ParserResult::runtimeError( "Expected a boolean value but did not recognise: '" + source + "'" );
         return ParserResult::ok( ParseResultType::Matched );
     }
+#ifdef CLARA_CONFIG_OPTIONAL_TYPE
+    template<typename T>
+    inline auto convertInto( std::string const &source, std::optional<T>& target ) -> ParserResult {
+        T temp;
+        auto result = convertInto( source, temp );
+        if( result )
+            target = temp;
+        return result;
+    }
+#endif // CLARA_CONFIG_OPTIONAL_TYPE
 
     struct NonCopyable {
         NonCopyable() = default;
@@ -6366,9 +6395,19 @@ namespace Catch {
         using namespace clara;
 
         auto const setWarning = [&]( std::string const& warning ) {
-                if( warning != "NoAssertions" )
+                auto warningSet = [&]() {
+                    if( warning == "NoAssertions" )
+                        return WarnAbout::NoAssertions;
+
+                    if ( warning == "NoTests" )
+                        return WarnAbout::NoTests;
+
+                    return WarnAbout::Nothing;
+                }();
+
+                if (warningSet == WarnAbout::Nothing)
                     return ParserResult::runtimeError( "Unrecognised warning: '" + warning + "'" );
-                config.warnings = static_cast<WarnAbout::What>( config.warnings | WarnAbout::NoAssertions );
+                config.warnings = static_cast<WarnAbout::What>( config.warnings | warningSet );
                 return ParserResult::ok( ParseResultType::Matched );
             };
         auto const loadTestNamesFromFile = [&]( std::string const& filename ) {
@@ -6569,10 +6608,9 @@ namespace Catch {
 // start catch_enforce.h
 
 #include <stdexcept>
-#include <iosfwd>
 
 #define CATCH_PREPARE_EXCEPTION( type, msg ) \
-    type( static_cast<std::ostringstream&&>( Catch::ReusableStringStream().get() << msg ).str() )
+    type( ( Catch::ReusableStringStream() << msg ).str() )
 #define CATCH_INTERNAL_ERROR( msg ) \
     throw CATCH_PREPARE_EXCEPTION( std::logic_error, CATCH_INTERNAL_LINEINFO << ": Internal Catch error: " << msg);
 #define CATCH_ERROR( msg ) \
@@ -6587,12 +6625,16 @@ namespace Catch {
     :   m_data( data ),
         m_stream( openStream() )
     {
-        if( !data.testsOrTags.empty() ) {
-            TestSpecParser parser( ITagAliasRegistry::get() );
+        TestSpecParser parser(ITagAliasRegistry::get());
+        if (data.testsOrTags.empty()) {
+            parser.parse("~[.]"); // All not hidden tests
+        }
+        else {
+            m_hasTestFilters = true;
             for( auto const& testOrTags : data.testsOrTags )
                 parser.parse( testOrTags );
-            m_testSpec = parser.testSpec();
         }
+        m_testSpec = parser.testSpec();
     }
 
     std::string const& Config::getFilename() const {
@@ -6607,9 +6649,11 @@ namespace Catch {
     std::string Config::getProcessName() const { return m_data.processName; }
 
     std::vector<std::string> const& Config::getReporterNames() const { return m_data.reporterNames; }
+    std::vector<std::string> const& Config::getTestsOrTags() const { return m_data.testsOrTags; }
     std::vector<std::string> const& Config::getSectionsToRun() const { return m_data.sectionsToRun; }
 
     TestSpec const& Config::testSpec() const { return m_testSpec; }
+    bool Config::hasTestFilters() const { return m_hasTestFilters; }
 
     bool Config::showHelp() const { return m_data.showHelp; }
 
@@ -6618,7 +6662,8 @@ namespace Catch {
     std::ostream& Config::stream() const               { return m_stream->stream(); }
     std::string Config::name() const                   { return m_data.name.empty() ? m_data.processName : m_data.name; }
     bool Config::includeSuccessfulResults() const      { return m_data.showSuccessfulTests; }
-    bool Config::warnAboutMissingAssertions() const    { return m_data.warnings & WarnAbout::NoAssertions; }
+    bool Config::warnAboutMissingAssertions() const    { return !!(m_data.warnings & WarnAbout::NoAssertions); }
+    bool Config::warnAboutNoTests() const              { return !!(m_data.warnings & WarnAbout::NoTests); }
     ShowDurations::OrNot Config::showDurations() const { return m_data.showDurations; }
     RunTests::InWhatOrder Config::runOrder() const     { return m_data.runOrder; }
     unsigned int Config::rngSeed() const               { return m_data.rngSeed; }
@@ -6802,7 +6847,12 @@ namespace {
 #ifdef CATCH_PLATFORM_MAC
             !isDebuggerActive() &&
 #endif
-            isatty(STDOUT_FILENO);
+#if !(defined(__DJGPP__) && defined(__STRICT_ANSI__))
+            isatty(STDOUT_FILENO)
+#else
+            false
+#endif
+            ;
     }
     IColourImpl* platformColourInstance() {
         ErrnoGuard guard;
@@ -6936,13 +6986,16 @@ namespace Catch {
             ::OutputDebugStringA( text.c_str() );
         }
     }
+
 #else
+
     namespace Catch {
         void writeToDebugConsole( std::string const& text ) {
             // !TBD: Need a version for Mac/ XCode and other IDEs
             Catch::cout() << text;
         }
     }
+
 #endif // Platform
 // end catch_debug_console.cpp
 // start catch_debugger.cpp
@@ -7165,24 +7218,18 @@ namespace Catch {
 #    pragma GCC diagnostic ignored "-Wmissing-field-initializers"
 #endif
 
-#if (defined(CATCH_PLATFORM_WINDOWS) && defined(CATCH_CONFIG_WINDOWS_SEH)) || defined(CATCH_CONFIG_POSIX_SIGNALS)
+#if defined( CATCH_CONFIG_WINDOWS_SEH ) || defined( CATCH_CONFIG_POSIX_SIGNALS )
+
 namespace {
     // Report the error condition
     void reportFatal( char const * const message ) {
         Catch::getCurrentContext().getResultCapture()->handleFatalErrorCondition( message );
     }
 }
-#endif
 
-#if defined ( CATCH_PLATFORM_WINDOWS ) /////////////////////////////////////////
+#endif // signals/SEH handling
 
-#  if !defined ( CATCH_CONFIG_WINDOWS_SEH )
-
-namespace Catch {
-    void FatalConditionHandler::reset() {}
-}
-
-#  else // CATCH_CONFIG_WINDOWS_SEH is defined
+#if defined( CATCH_CONFIG_WINDOWS_SEH )
 
 namespace Catch {
     struct SignalDefs { DWORD id; const char* name; };
@@ -7222,7 +7269,6 @@ namespace Catch {
 
     void FatalConditionHandler::reset() {
         if (isSet) {
-            // Unregister handler and restore the old guarantee
             RemoveVectoredExceptionHandler(exceptionHandlerHandle);
             SetThreadStackGuarantee(&guaranteeSize);
             exceptionHandlerHandle = nullptr;
@@ -7240,19 +7286,7 @@ PVOID FatalConditionHandler::exceptionHandlerHandle = nullptr;
 
 } // namespace Catch
 
-#  endif // CATCH_CONFIG_WINDOWS_SEH
-
-#else // Not Windows - assumed to be POSIX compatible //////////////////////////
-
-#  if !defined(CATCH_CONFIG_POSIX_SIGNALS)
-
-namespace Catch {
-    void FatalConditionHandler::reset() {}
-}
-
-#  else // CATCH_CONFIG_POSIX_SIGNALS is defined
-
-#include <signal.h>
+#elif defined( CATCH_CONFIG_POSIX_SIGNALS )
 
 namespace Catch {
 
@@ -7321,9 +7355,13 @@ namespace Catch {
 
 } // namespace Catch
 
-#  endif // CATCH_CONFIG_POSIX_SIGNALS
+#else
+
+namespace Catch {
+    void FatalConditionHandler::reset() {}
+}
 
-#endif // not Windows
+#endif // signals/SEH handling
 
 #if defined(__GNUC__)
 #    pragma GCC diagnostic pop
@@ -7605,11 +7643,10 @@ namespace Catch {
 
     std::size_t listTests( Config const& config ) {
         TestSpec testSpec = config.testSpec();
-        if( config.testSpec().hasFilters() )
+        if( config.hasTestFilters() )
             Catch::cout() << "Matching test cases:\n";
         else {
             Catch::cout() << "All available test cases:\n";
-            testSpec = TestSpecParser( ITagAliasRegistry::get() ).parse( "*" ).testSpec();
         }
 
         auto matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
@@ -7631,7 +7668,7 @@ namespace Catch {
                 Catch::cout() << Column( testCaseInfo.tagsAsString() ).indent( 6 ) << "\n";
         }
 
-        if( !config.testSpec().hasFilters() )
+        if( !config.hasTestFilters() )
             Catch::cout() << pluralise( matchedTestCases.size(), "test case" ) << '\n' << std::endl;
         else
             Catch::cout() << pluralise( matchedTestCases.size(), "matching test case" ) << '\n' << std::endl;
@@ -7640,8 +7677,6 @@ namespace Catch {
 
     std::size_t listTestsNamesOnly( Config const& config ) {
         TestSpec testSpec = config.testSpec();
-        if( !config.testSpec().hasFilters() )
-            testSpec = TestSpecParser( ITagAliasRegistry::get() ).parse( "*" ).testSpec();
         std::size_t matchedTests = 0;
         std::vector<TestCase> matchedTestCases = filterTests( getAllTestCasesSorted( config ), testSpec, config );
         for( auto const& testCaseInfo : matchedTestCases ) {
@@ -7671,11 +7706,10 @@ namespace Catch {
 
     std::size_t listTags( Config const& config ) {
         TestSpec testSpec = config.testSpec();
-        if( config.testSpec().hasFilters() )
+        if( config.hasTestFilters() )
             Catch::cout() << "Tags for matching test cases:\n";
         else {
             Catch::cout() << "All available tags:\n";
-            testSpec = TestSpecParser( ITagAliasRegistry::get() ).parse( "*" ).testSpec();
         }
 
         std::map<std::string, TagInfo> tagCounts;
@@ -8151,7 +8185,7 @@ namespace Catch {
         void invoke() const override;
     };
 
-    std::string extractClassName( std::string const& classOrQualifiedMethodName );
+    std::string extractClassName( StringRef const& classOrQualifiedMethodName );
 
     ///////////////////////////////////////////////////////////////////////////
 
@@ -8422,7 +8456,7 @@ namespace Catch {
         m_context(getCurrentMutableContext()),
         m_config(_config),
         m_reporter(std::move(reporter)),
-        m_lastAssertionInfo{ "", SourceLineInfo("",0), "", ResultDisposition::Normal },
+        m_lastAssertionInfo{ StringRef(), SourceLineInfo("",0), StringRef(), ResultDisposition::Normal },
         m_includeSuccessfulResults( m_config->includeSuccessfulResults() )
     {
         m_context.setRunner(this);
@@ -8449,7 +8483,7 @@ namespace Catch {
         std::string redirectedCout;
         std::string redirectedCerr;
 
-        TestCaseInfo testInfo = testCase.getTestCaseInfo();
+        auto const& testInfo = testCase.getTestCaseInfo();
 
         m_reporter->testCaseStarting(testInfo);
 
@@ -8656,7 +8690,7 @@ namespace Catch {
         Counts prevAssertions = m_totals.assertions;
         double duration = 0;
         m_shouldReportUnexpected = true;
-        m_lastAssertionInfo = { "TEST_CASE", testCaseInfo.lineInfo, "", ResultDisposition::Normal };
+        m_lastAssertionInfo = { "TEST_CASE"_sr, testCaseInfo.lineInfo, StringRef(), ResultDisposition::Normal };
 
         seedRng(*m_config);
 
@@ -8891,12 +8925,12 @@ namespace Catch {
         void showHelp() const;
         void libIdentify();
 
-        int applyCommandLine( int argc, char* argv[] );
+        int applyCommandLine( int argc, char const * const * argv );
 
         void useConfigData( ConfigData const& configData );
 
         int run( int argc, char* argv[] );
-    #if defined(WIN32) && defined(UNICODE)
+    #if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(UNICODE)
         int run( int argc, wchar_t* const argv[] );
     #endif
         int run();
@@ -8997,8 +9031,6 @@ namespace Catch {
             context.testGroupStarting(config->name(), 1, 1);
 
             TestSpec testSpec = config->testSpec();
-            if (!testSpec.hasFilters())
-                testSpec = TestSpecParser(ITagAliasRegistry::get()).parse("~[.]").testSpec(); // All not hidden tests
 
             auto const& allTestCases = getAllTestCasesSorted(*config);
             for (auto const& testCase : allTestCases) {
@@ -9008,6 +9040,20 @@ namespace Catch {
                     context.reporter().skipTest(testCase);
             }
 
+            if (config->warnAboutNoTests() && totals.testCases.total() == 0) {
+                ReusableStringStream testConfig;
+
+                bool first = true;
+                for (const auto& input : config->getTestsOrTags()) {
+                    if (!first) { testConfig << ' '; }
+                    first = false;
+                    testConfig << input;
+                }
+
+                context.reporter().noMatchingTestCases(testConfig.str());
+                totals.error = -1;
+            }
+
             context.testGroupEnded(config->name(), totals, 1, 1);
             return totals;
         }
@@ -9047,7 +9093,7 @@ namespace Catch {
         if ( !exceptions.empty() ) {
             m_startupExceptions = true;
             Colour colourGuard( Colour::Red );
-            Catch::cerr() << "Errors occured during startup!" << '\n';
+            Catch::cerr() << "Errors occurred during startup!" << '\n';
             // iterate over all exceptions and notify user
             for ( const auto& ex_ptr : exceptions ) {
                 try {
@@ -9079,7 +9125,7 @@ namespace Catch {
                 << std::left << std::setw(16) << "version: " << libraryVersion() << std::endl;
     }
 
-    int Session::applyCommandLine( int argc, char* argv[] ) {
+    int Session::applyCommandLine( int argc, char const * const * argv ) {
         if( m_startupExceptions )
             return 1;
 
@@ -9116,7 +9162,7 @@ namespace Catch {
         return returnCode;
     }
 
-#if defined(WIN32) && defined(UNICODE)
+#if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(UNICODE)
     int Session::run( int argc, wchar_t* const argv[] ) {
 
         char **utf8Argv = new char *[ argc ];
@@ -9187,10 +9233,11 @@ namespace Catch {
             if( Option<std::size_t> listed = list( config() ) )
                 return static_cast<int>( *listed );
 
+            auto totals = runTests( m_config );
             // Note that on unices only the lower 8 bits are usually used, clamping
             // the return value to 255 prevents false negative when some multiple
             // of 256 tests has failed
-            return (std::min)( MaxExitCode, static_cast<int>( runTests( m_config ).assertions.failed ) );
+            return (std::min)( { MaxExitCode, totals.error, static_cast<int>( totals.assertions.failed ) } );
         }
         catch( std::exception& ex ) {
             Catch::cerr() << ex.what() << std::endl;
@@ -9525,7 +9572,7 @@ namespace Catch {
            const_cast<StringRef*>( this )->takeOwnership();
         return m_start;
     }
-    auto StringRef::data() const noexcept -> char const* {