[libcalamares] Simplify logging-manipulators

Writing `Logger::NoQuote{}`` has annoyed me for a while, so
switch it to a constant, like SubEntry, so it looks more
like a regular manipulator object.

src/libcalamares/utils/CalamaresUtilsSystem.cpp

@@ -188,7 +188,7 @@ System::runCommand( System::RunLocation location,
                                        : -1 ) )
     {
         cWarning() << "Process" << args.first() << "timed out after" << timeoutSec.count() << "s. Output so far:\n"
-                   << Logger::NoQuote {} << process.readAllStandardOutput();
+                   << Logger::NoQuote << process.readAllStandardOutput();
         return ProcessResult::Code::TimedOut;
     }
 
@@ -196,7 +196,7 @@ System::runCommand( System::RunLocation location,
 
     if ( process.exitStatus() == QProcess::CrashExit )
     {
-        cWarning() << "Process" << args.first() << "crashed. Output so far:\n" << Logger::NoQuote {} << output;
+        cWarning() << "Process" << args.first() << "crashed. Output so far:\n" << Logger::NoQuote << output;
         return ProcessResult::Code::Crashed;
     }
 
@@ -206,7 +206,7 @@ System::runCommand( System::RunLocation location,
     {
         if ( showDebug && !output.isEmpty() )
         {
-            cDebug() << Logger::SubEntry << "Finished. Exit code:" << r << "output:\n" << Logger::NoQuote {} << output;
+            cDebug() << Logger::SubEntry << "Finished. Exit code:" << r << "output:\n" << Logger::NoQuote << output;
         }
         else
         {
@@ -218,7 +218,7 @@ System::runCommand( System::RunLocation location,
         if ( !output.isEmpty() )
         {
             cDebug() << Logger::SubEntry << "Target cmd:" << RedactedList( args ) << "Exit code:" << r << "output:\n"
-                     << Logger::NoQuote {} << output;
+                     << Logger::NoQuote << output;
         }
         else
         {

src/libcalamares/utils/Logger.cpp

@@ -207,6 +207,8 @@ constexpr FuncSuppressor::FuncSuppressor( const char s[] )
 
 const constexpr FuncSuppressor Continuation( s_Continuation );
 const constexpr FuncSuppressor SubEntry( s_SubEntry );
+const constexpr NoQuote_t NoQuote {};
+const constexpr Quote_t Quote {};
 
 QString
 toString( const QVariant& v )

src/libcalamares/utils/Logger.h

@@ -25,15 +25,17 @@ struct FuncSuppressor
     const char* m_s;
 };
 
-struct NoQuote
+struct NoQuote_t
 {
 };
-struct Quote
+struct Quote_t
 {
 };
 
 DLLEXPORT extern const FuncSuppressor Continuation;
 DLLEXPORT extern const FuncSuppressor SubEntry;
+DLLEXPORT extern const NoQuote_t NoQuote;
+DLLEXPORT extern const Quote_t Quote;
 
 enum
 {
@@ -74,13 +76,13 @@ operator<<( QDebug& s, const FuncSuppressor& f )
 }
 
 inline QDebug&
-operator<<( QDebug& s, const NoQuote& )
+operator<<( QDebug& s, const NoQuote_t& )
 {
     return s.noquote().nospace();
 }
 
 inline QDebug&
-operator<<( QDebug& s, const Quote& )
+operator<<( QDebug& s, const Quote_t& )
 {
     return s.quote().space();
 }
@@ -254,7 +256,7 @@ operator<<( QDebug& s, const DebugMap& t )
 inline QDebug&
 operator<<( QDebug& s, const Pointer& p )
 {
-    s << NoQuote {} << '@' << p.ptr << Quote {};
+    s << NoQuote << '@' << p.ptr << Quote;
     return s;
 }
 }  // namespace Logger

src/libcalamaresui/Branding.cpp

@@ -35,7 +35,7 @@
 [[noreturn]] static void
 bail( const QString& descriptorPath, const QString& message )
 {
-    cError() << "FATAL in" << descriptorPath << Logger::Continuation << Logger::NoQuote {} << message;
+    cError() << "FATAL in" << descriptorPath << Logger::Continuation << Logger::NoQuote << message;
     ::exit( EXIT_FAILURE );
 }
 

src/libcalamaresui/ViewManager.cpp

@@ -142,9 +142,9 @@ ViewManager::onInstallationFailed( const QString& message, const QString& detail
 {
     bool shouldOfferWebPaste = false;  // TODO: config var
 
-    cError() << "Installation failed:";
-    cDebug() << "- message:" << message;
-    cDebug() << "- details:" << details;
+    cError() << "Installation failed:" << message;
+    cDebug() << Logger::SubEntry << "- message:" << message;
+    cDebug() << Logger::SubEntry << "- details:" << Logger::NoQuote << details;
 
     QString heading
         = Calamares::Settings::instance()->isSetupMode() ? tr( "Setup Failed" ) : tr( "Installation Failed" );