Document a more useful to_string_view overload

doc/api.rst

@@ -210,7 +210,7 @@ Utilities
 
 .. doxygenfunction:: fmt::to_wstring(const T&)
 
-.. doxygenfunction:: fmt::to_string_view(const basic_string<Char, Traits, Allocator>&)
+.. doxygenfunction:: fmt::to_string_view(const Char*)
 
 .. doxygenfunction:: fmt::join(const Range&, string_view)
 

include/fmt/core.h

@@ -461,6 +461,11 @@ template <typename T> struct is_char : std::is_integral<T> {};
     std::string message = fmt::format(my_string("The answer is {}"), 42);
   \endrst
  */
+template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
+inline basic_string_view<Char> to_string_view(const Char* s) {
+  return s;
+}
+
 template <typename Char, typename Traits, typename Allocator>
 inline basic_string_view<Char> to_string_view(
     const std::basic_string<Char, Traits, Allocator>& s) {
@@ -472,11 +477,6 @@ inline basic_string_view<Char> to_string_view(basic_string_view<Char> s) {
   return s;
 }
 
-template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
-inline basic_string_view<Char> to_string_view(const Char* s) {
-  return s;
-}
-
 template <typename Char,
           FMT_ENABLE_IF(!std::is_empty<internal::std_string_view<Char>>::value)>
 inline basic_string_view<Char> to_string_view(