[GR-45621] Add a deprecation warning for Encoding#replicate.

PullRequest: truffleruby/4146

Author: andrykonchin

CHANGELOG.md

@@ -47,6 +47,7 @@ Compatibility:
 * Promote `Set` class to core library (#3039, @andrykonchin).
 * Support `connect_timeout` keyword argument to `TCPSocket.{new,open}` (#3421, @manefz, @patricklinpl, @nirvdrum, @rwstauner).
 * Add `File.lutime` and `Pathname#lutime` methods (#3039, @andrykonchin).
+* Add a deprecation warning for `Encoding#replicate` (#3039, @patricklinpl, @manefz, @nirvdrum).
 
 Performance:
 

spec/tags/core/encoding/replicate_tags.txt

@@ -139,6 +139,8 @@ def names
   end
 
   def replicate(name)
+    warn 'Encoding#replicate is deprecated and will be removed in Ruby 3.3; use the original encoding instead', category: :deprecated, uplevel: 1
+
     Truffle::EncodingOperations.replicate_encoding(self, name)
   end