Minor improvements to DUMP macro

- output enum values names with help of magic_enum
- output string literals as is, without type info

base/base/iostream_debug_helpers.h

@@ -6,6 +6,7 @@
 #include <tuple>
 #include <iomanip>
 #include <iostream>
+#include <magic_enum.hpp>
 
 /** Usage:
   *
@@ -61,6 +62,13 @@ std::enable_if_t<priority == 2, Out> & dumpImpl(Out & out, T && x, std::decay_t<
 }
 
 
+template <int priority, typename Out, typename T>
+std::enable_if_t<priority == 3 && std::is_enum_v<std::decay_t<T>>, Out> &
+dumpImpl(Out & out, T && x)
+{
+    return out << magic_enum::enum_name(x);
+}
+
 /// string and const char * - output not as container or pointer.
 
 template <int priority, typename Out, typename T>
@@ -131,15 +139,26 @@ Out & dumpValue(Out & out, T && x)
 template <typename Out, typename T>
 Out & dump(Out & out, const char * name, T && x)
 {
+    // Dumping string literal, printing name and demangled type is irrelevant.
+    if constexpr (std::is_same_v<const char *, std::decay_t<std::remove_reference_t<T>>>)
+    {
+         const auto name_len = strlen(name);
+         const auto value_len = strlen(x);
+         // `name` is the same as quoted `x`
+         if (name_len > 2 && value_len > 0 && name[0] == '"' && name[name_len - 1] == '"'
+                 && strncmp(name + 1, x, std::min(value_len, name_len) - 1) == 0)
+             return out << x;
+    }
+
     out << demangle(typeid(x).name()) << " " << name << " = ";
-    return dumpValue(out, x);
+    return dumpValue(out, x) << "; ";
 }
 
 #ifdef __clang__
 #pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
 #endif
 
-#define DUMPVAR(VAR) ::dump(std::cerr, #VAR, (VAR)); std::cerr << "; ";
+#define DUMPVAR(VAR) ::dump(std::cerr, #VAR, (VAR));
 #define DUMPHEAD std::cerr << __FILE__ << ':' << __LINE__ << " [ " << getThreadId() << " ] ";
 #define DUMPTAIL std::cerr << '\n';