PIString/PIChar explicit, support char16_t

libs/main/text/pistring_std.h

@@ -30,6 +30,7 @@
 #ifdef QNX
 typedef std::basic_string<wchar_t> wstring;
 #endif
+#include "piliterals.h"
 #include "pistringlist.h"
 
 
@@ -117,12 +118,12 @@ inline std::istream & operator>>(std::istream & s, PIString & v) {
 
 //! \relatesalso PIStringList \brief Output operator to std::ostream (cout)
 inline std::ostream & operator<<(std::ostream & s, const PIStringList & v) {
-	s << PIChar("{");
+	s << PIChar('{');
 	for (uint i = 0; i < v.size(); ++i) {
-		s << PIChar("\"") << v[i] << PIChar("\"");
-		if (i < v.size() - 1) s << PIStringAscii(", ");
+		s << PIChar('"') << v[i] << PIChar('"');
+		if (i < v.size() - 1) s << ", "_a;
 	}
-	s << PIChar("}");
+	s << PIChar('}');
 	return s;
 }