marcandre	2019-04-13 09:56:12 +0900 (Sat, 13 Apr 2019)

  New Revision: 67519

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=67519

  Log:
    Proc.new: change deprecation warning for clarity (issue #15539)

  Modified files:
    trunk/proc.c
    trunk/spec/ruby/core/kernel/proc_spec.rb
    trunk/spec/ruby/core/proc/new_spec.rb
Index: proc.c
===================================================================
--- proc.c	(revision 67518)
+++ proc.c	(revision 67519)
@@ -710,7 +710,7 @@ proc_new(VALUE klass, int8_t is_lambda) https://github.com/ruby/ruby/blob/trunk/proc.c#L710
                 rb_raise(rb_eArgError, proc_without_block);
             }
             else {
-		rb_warn(proc_without_block);
+		rb_warn("Capturing the given block using Proc.new is deprecated; use `&block` instead");
 	    }
 	}
 #else
Index: spec/ruby/core/kernel/proc_spec.rb
===================================================================
--- spec/ruby/core/kernel/proc_spec.rb	(revision 67518)
+++ spec/ruby/core/kernel/proc_spec.rb	(revision 67519)
@@ -56,7 +56,7 @@ describe "Kernel#proc" do https://github.com/ruby/ruby/blob/trunk/spec/ruby/core/kernel/proc_spec.rb#L56
 
       -> {
         some_method { "hello" }
-      }.should complain(/tried to create Proc object without a block/)
+      }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end
   end
 
Index: spec/ruby/core/proc/new_spec.rb
===================================================================
--- spec/ruby/core/proc/new_spec.rb	(revision 67518)
+++ spec/ruby/core/proc/new_spec.rb	(revision 67519)
@@ -194,11 +194,11 @@ describe "Proc.new without a block" do https://github.com/ruby/ruby/blob/trunk/spec/ruby/core/proc/new_spec.rb#L194
 
   ruby_version_is "2.7" do
     it "can be created if invoked from within a method with a block" do
-      lambda { ProcSpecs.new_proc_in_method { "hello" } }.should complain(/tried to create Proc object without a block/)
+      lambda { ProcSpecs.new_proc_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end
 
     it "can be created if invoked on a subclass from within a method with a block" do
-      lambda { ProcSpecs.new_proc_subclass_in_method { "hello" } }.should complain(/tried to create Proc object without a block/)
+      lambda { ProcSpecs.new_proc_subclass_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end
 
 
@@ -209,7 +209,7 @@ describe "Proc.new without a block" do https://github.com/ruby/ruby/blob/trunk/spec/ruby/core/proc/new_spec.rb#L209
 
       -> {
         some_method { "hello" }
-      }.should complain(/tried to create Proc object without a block/)
+      }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end
   end
 end

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