[flat.map.defn, flat.set.defn] Avoid naming the from_range_t tag

Author: hewillk

source/containers.tex

@@ -15893,8 +15893,8 @@
         : c(), compare(comp) { insert(s, first, last); }
 
     template<@\exposconcept{container-compatible-range}@<value_type> R>
-      flat_map(from_range_t fr, R&& rg)
-        : flat_map(fr, std::forward<R>(rg), key_compare()) { }
+      flat_map(from_range_t, R&& rg)
+        : flat_map(from_range, std::forward<R>(rg), key_compare()) { }
     template<@\exposconcept{container-compatible-range}@<value_type> R>
       flat_map(from_range_t, R&& rg, const key_compare& comp)
         : flat_map(comp) { insert_range(std::forward<R>(rg)); }
@@ -17079,8 +17079,8 @@
         : c(), compare(comp) { insert(s, first, last); }
 
     template<@\exposconcept{container-compatible-range}@<value_type> R>
-      flat_multimap(from_range_t fr, R&& rg)
-        : flat_multimap(fr, std::forward<R>(rg), key_compare()) { }
+      flat_multimap(from_range_t, R&& rg)
+        : flat_multimap(from_range, std::forward<R>(rg), key_compare()) { }
     template<@\exposconcept{container-compatible-range}@<value_type> R>
       flat_multimap(from_range_t, R&& rg, const key_compare& comp)
         : flat_multimap(comp) { insert_range(std::forward<R>(rg)); }
@@ -17680,8 +17680,8 @@
         : @\exposid{c}@(first, last), @\exposid{compare}@(comp) { }
 
     template<@\exposconcept{container-compatible-range}@<value_type> R>
-      flat_set(from_range_t fr, R&& rg)
-        : flat_set(fr, std::forward<R>(rg), key_compare()) { }
+      flat_set(from_range_t, R&& rg)
+        : flat_set(from_range, std::forward<R>(rg), key_compare()) { }
     template<@\exposconcept{container-compatible-range}@<value_type> R>
       flat_set(from_range_t, R&& rg, const key_compare& comp)
         : flat_set(comp)
@@ -18341,8 +18341,8 @@
         : @\exposid{c}@(first, last), @\exposid{compare}@(comp) { }
 
     template<@\exposconcept{container-compatible-range}@<value_type> R>
-      flat_multiset(from_range_t fr, R&& rg)
-        : flat_multiset(fr, std::forward<R>(rg), key_compare()) { }
+      flat_multiset(from_range_t, R&& rg)
+        : flat_multiset(from_range, std::forward<R>(rg), key_compare()) { }
     template<@\exposconcept{container-compatible-range}@<value_type> R>
       flat_multiset(from_range_t, R&& rg, const key_compare& comp)
         : flat_multiset(comp)