Add StringBuilder.Append(ROM<char>) (#20773)

* added Append(ROM<char>)

* address feedback

* revert sln

diff --git a/src/System.Private.CoreLib/shared/System/Text/StringBuilder.cs b/src/System.Private.CoreLib/shared/System/Text/StringBuilder.cs
index 904166f9087b0fec17a5da620760a022479ddeb3..54218cadd04bf87d3d6ef495a7119a2e285e07c5 100644 (file)
--- a/src/System.Private.CoreLib/shared/System/Text/StringBuilder.cs
+++ b/src/System.Private.CoreLib/shared/System/Text/StringBuilder.cs
@@ -1211,6 +1211,8 @@ namespace System.Text
             return this;
         }
 
+        public StringBuilder Append(ReadOnlyMemory<char> value) => Append(value.Span);
+
         #region AppendJoin
 
         public unsafe StringBuilder AppendJoin(string separator, params object[] values)