LWG4076 concat_view should be freestanding

Author: burblebee

source/ranges.tex

@@ -364,9 +364,9 @@
   // \ref{range.concat}, concat view
   template<@\libconcept{input_range}@... Views>
     requires @\seebelow@
-  class concat_view;
+  class concat_view;                                                                // freestanding
 
-  namespace views { inline constexpr @\unspecnc@ concat = @\unspecnc@; }
+  namespace views { inline constexpr @\unspecnc@ concat = @\unspecnc@; }            // freestanding
 
   // \ref{range.counted}, counted view
   namespace views { inline constexpr @\unspecnc@ counted = @\unspecnc@; }           // freestanding

source/support.tex

@@ -738,7 +738,7 @@
 #define @\defnlibxname{cpp_lib_ranges_cartesian_product}@          202207L // freestanding, also in \libheader{ranges}
 #define @\defnlibxname{cpp_lib_ranges_chunk}@                      202202L // freestanding, also in \libheader{ranges}
 #define @\defnlibxname{cpp_lib_ranges_chunk_by}@                   202202L // freestanding, also in \libheader{ranges}
-#define @\defnlibxname{cpp_lib_ranges_concat}@                     202403L // also in \libheader{ranges}
+#define @\defnlibxname{cpp_lib_ranges_concat}@                     202403L // freestanding, also in \libheader{ranges}
 #define @\defnlibxname{cpp_lib_ranges_contains}@                   202207L // also in \libheader{algorithm}
 #define @\defnlibxname{cpp_lib_ranges_enumerate}@                  202302L // also in \libheader{ranges}
 #define @\defnlibxname{cpp_lib_ranges_find_last}@                  202207L // also in \libheader{algorithm}