delete deprecated IO-like methods

This commit deletes
{IO,ARGF,StringIO,Zib::GZipReader}#{bytes,chars,lines,codepoints}, which
have been deprecated since c47c095b9740e7c19d6fdca29ab661c1089221d4.

Note that String also has those methods.  They are neither depreacted
nor deleted because they are not aliases of counterpart each_something.

15 files changed, 137 insertions, 111 deletions

diff --git a/spec/ruby/core/argf/bytes_spec.rb b/spec/ruby/core/argf/bytes_spec.rb
index 71d07fabcb..58a7082fd2 100644
--- a/spec/ruby/core/argf/bytes_spec.rb
+++ b/spec/ruby/core/argf/bytes_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../spec_helper'
 require_relative 'shared/each_byte'
 
-describe "ARGF.bytes" do
-  it_behaves_like :argf_each_byte, :bytes
+ruby_version_is ''...'2.8' do
+  describe "ARGF.bytes" do
+    it_behaves_like :argf_each_byte, :bytes
+  end
 end
diff --git a/spec/ruby/core/argf/chars_spec.rb b/spec/ruby/core/argf/chars_spec.rb
index ee79ea763b..b5105effdf 100644
--- a/spec/ruby/core/argf/chars_spec.rb
+++ b/spec/ruby/core/argf/chars_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../spec_helper'
 require_relative 'shared/each_char'
 
-describe "ARGF.chars" do
-  it_behaves_like :argf_each_char, :chars
+ruby_version_is ''...'2.8' do
+  describe "ARGF.chars" do
+    it_behaves_like :argf_each_char, :chars
+  end
 end
diff --git a/spec/ruby/core/argf/codepoints_spec.rb b/spec/ruby/core/argf/codepoints_spec.rb
index 7aa8a761fe..d7b9d08aaa 100644
--- a/spec/ruby/core/argf/codepoints_spec.rb
+++ b/spec/ruby/core/argf/codepoints_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../spec_helper'
 require_relative 'shared/each_codepoint'
 
-describe "ARGF.codepoints" do
-  it_behaves_like :argf_each_codepoint, :codepoints
+ruby_version_is ''...'2.8' do
+  describe "ARGF.codepoints" do
+    it_behaves_like :argf_each_codepoint, :codepoints
+  end
 end
diff --git a/spec/ruby/core/argf/lines_spec.rb b/spec/ruby/core/argf/lines_spec.rb
index 6ca6ff1256..620db4312f 100644
--- a/spec/ruby/core/argf/lines_spec.rb
+++ b/spec/ruby/core/argf/lines_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../spec_helper'
 require_relative 'shared/each_line'
 
-describe "ARGF.lines" do
-  it_behaves_like :argf_each_line, :lines
+ruby_version_is ''...'2.8' do
+  describe "ARGF.lines" do
+    it_behaves_like :argf_each_line, :lines
+  end
 end
diff --git a/spec/ruby/core/io/bytes_spec.rb b/spec/ruby/core/io/bytes_spec.rb
index feeb493566..f0e993e8f0 100644
--- a/spec/ruby/core/io/bytes_spec.rb
+++ b/spec/ruby/core/io/bytes_spec.rb
@@ -2,42 +2,44 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
-describe "IO#bytes" do
-  before :each do
-    @io = IOSpecs.io_fixture "lines.txt"
-  end
-
-  after :each do
-    @io.close unless @io.closed?
-  end
+ruby_version_is ''...'2.8' do
+  describe "IO#bytes" do
+    before :each do
+      @io = IOSpecs.io_fixture "lines.txt"
+    end
 
-  it "returns an enumerator of the next bytes from the stream" do
-    enum = @io.bytes
-    enum.should be_an_instance_of(Enumerator)
-    @io.readline.should == "Voici la ligne une.\n"
-    enum.first(5).should == [81, 117, 105, 32, 195]
-  end
+    after :each do
+      @io.close unless @io.closed?
+    end
 
-  it "yields each byte" do
-    count = 0
-    ScratchPad.record []
-    @io.each_byte do |byte|
-      ScratchPad << byte
-      break if 4 < count += 1
+    it "returns an enumerator of the next bytes from the stream" do
+      enum = @io.bytes
+      enum.should be_an_instance_of(Enumerator)
+      @io.readline.should == "Voici la ligne une.\n"
+      enum.first(5).should == [81, 117, 105, 32, 195]
     end
 
-    ScratchPad.recorded.should == [86, 111, 105, 99, 105]
-  end
+    it "yields each byte" do
+      count = 0
+      ScratchPad.record []
+      @io.each_byte do |byte|
+        ScratchPad << byte
+        break if 4 < count += 1
+      end
 
-  it "raises an IOError on closed stream" do
-    enum = IOSpecs.closed_io.bytes
-    -> { enum.first }.should raise_error(IOError)
-  end
+      ScratchPad.recorded.should == [86, 111, 105, 99, 105]
+    end
 
-  it "raises an IOError on an enumerator for a stream that has been closed" do
-    enum = @io.bytes
-    enum.first.should == 86
-    @io.close
-    -> { enum.first }.should raise_error(IOError)
+    it "raises an IOError on closed stream" do
+      enum = IOSpecs.closed_io.bytes
+      -> { enum.first }.should raise_error(IOError)
+    end
+
+    it "raises an IOError on an enumerator for a stream that has been closed" do
+      enum = @io.bytes
+      enum.first.should == 86
+      @io.close
+      -> { enum.first }.should raise_error(IOError)
+    end
   end
 end
diff --git a/spec/ruby/core/io/chars_spec.rb b/spec/ruby/core/io/chars_spec.rb
index cd5dbbce4f..2efbdd7333 100644
--- a/spec/ruby/core/io/chars_spec.rb
+++ b/spec/ruby/core/io/chars_spec.rb
@@ -3,10 +3,12 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/chars'
 
-describe "IO#chars" do
-  it_behaves_like :io_chars, :chars
-end
+ruby_version_is ''...'2.8' do
+  describe "IO#chars" do
+    it_behaves_like :io_chars, :chars
+  end
 
-describe "IO#chars" do
-  it_behaves_like :io_chars_empty, :chars
+  describe "IO#chars" do
+    it_behaves_like :io_chars_empty, :chars
+  end
 end
diff --git a/spec/ruby/core/io/codepoints_spec.rb b/spec/ruby/core/io/codepoints_spec.rb
index 915d99c027..1138989427 100644
--- a/spec/ruby/core/io/codepoints_spec.rb
+++ b/spec/ruby/core/io/codepoints_spec.rb
@@ -2,24 +2,27 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/codepoints'
 
-# See redmine #1667
-describe "IO#codepoints" do
-  it_behaves_like :io_codepoints, :codepoints
-end
+ruby_version_is ''...'2.8' do
 
-describe "IO#codepoints" do
-  before :each do
-    @io = IOSpecs.io_fixture "lines.txt"
+  # See redmine #1667
+  describe "IO#codepoints" do
+    it_behaves_like :io_codepoints, :codepoints
   end
 
-  after :each do
-    @io.close unless @io.closed?
-  end
+  describe "IO#codepoints" do
+    before :each do
+      @io = IOSpecs.io_fixture "lines.txt"
+    end
+
+    after :each do
+      @io.close unless @io.closed?
+    end
 
-  it "calls the given block" do
-    r = []
-    @io.codepoints { |c| r << c }
-    r[24].should == 232
-    r.last.should == 10
+    it "calls the given block" do
+      r = []
+      @io.codepoints { |c| r << c }
+      r[24].should == 232
+      r.last.should == 10
+    end
   end
 end
diff --git a/spec/ruby/core/io/each_codepoint_spec.rb b/spec/ruby/core/io/each_codepoint_spec.rb
index cddc6b4662..07a4037c8a 100644
--- a/spec/ruby/core/io/each_codepoint_spec.rb
+++ b/spec/ruby/core/io/each_codepoint_spec.rb
@@ -4,7 +4,7 @@ require_relative 'shared/codepoints'
 
 # See redmine #1667
 describe "IO#each_codepoint" do
-  it_behaves_like :io_codepoints, :codepoints
+  it_behaves_like :io_codepoints, :each_codepoint
 end
 
 describe "IO#each_codepoint" do
diff --git a/spec/ruby/core/io/lines_spec.rb b/spec/ruby/core/io/lines_spec.rb
index a8b8023a2a..dcf5825259 100644
--- a/spec/ruby/core/io/lines_spec.rb
+++ b/spec/ruby/core/io/lines_spec.rb
@@ -2,41 +2,43 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
-describe "IO#lines" do
-  before :each do
-    @io = IOSpecs.io_fixture "lines.txt"
-  end
-
-  after :each do
-    @io.close if @io
-  end
+ruby_version_is ''...'2.8' do
+  describe "IO#lines" do
+    before :each do
+      @io = IOSpecs.io_fixture "lines.txt"
+    end
 
-  it "returns an Enumerator" do
-    @io.lines.should be_an_instance_of(Enumerator)
-  end
+    after :each do
+      @io.close if @io
+    end
 
-  describe "when no block is given" do
     it "returns an Enumerator" do
       @io.lines.should be_an_instance_of(Enumerator)
     end
 
-    describe "returned Enumerator" do
-      describe "size" do
-        it "should return nil" do
-          @io.lines.size.should == nil
+    describe "when no block is given" do
+      it "returns an Enumerator" do
+        @io.lines.should be_an_instance_of(Enumerator)
+      end
+
+      describe "returned Enumerator" do
+        describe "size" do
+          it "should return nil" do
+            @io.lines.size.should == nil
+          end
         end
       end
     end
-  end
 
-  it "returns a line when accessed" do
-    enum = @io.lines
-    enum.first.should == IOSpecs.lines[0]
-  end
+    it "returns a line when accessed" do
+      enum = @io.lines
+      enum.first.should == IOSpecs.lines[0]
+    end
 
-  it "yields each line to the passed block" do
-    ScratchPad.record []
-    @io.lines { |s| ScratchPad << s }
-    ScratchPad.recorded.should == IOSpecs.lines
+    it "yields each line to the passed block" do
+      ScratchPad.record []
+      @io.lines { |s| ScratchPad << s }
+      ScratchPad.recorded.should == IOSpecs.lines
+    end
   end
 end
diff --git a/spec/ruby/library/stringio/bytes_spec.rb b/spec/ruby/library/stringio/bytes_spec.rb
index 692fba997f..bf0d27615e 100644
--- a/spec/ruby/library/stringio/bytes_spec.rb
+++ b/spec/ruby/library/stringio/bytes_spec.rb
@@ -2,10 +2,12 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each_byte'
 
-describe "StringIO#bytes" do
-  it_behaves_like :stringio_each_byte, :bytes
-end
+ruby_version_is ''...'2.8' do
+  describe "StringIO#bytes" do
+    it_behaves_like :stringio_each_byte, :bytes
+  end
 
-describe "StringIO#bytes when self is not readable" do
-  it_behaves_like :stringio_each_byte_not_readable, :bytes
+  describe "StringIO#bytes when self is not readable" do
+    it_behaves_like :stringio_each_byte_not_readable, :bytes
+  end
 end
diff --git a/spec/ruby/library/stringio/chars_spec.rb b/spec/ruby/library/stringio/chars_spec.rb
index 7dc55d4b37..e3879c2cff 100644
--- a/spec/ruby/library/stringio/chars_spec.rb
+++ b/spec/ruby/library/stringio/chars_spec.rb
@@ -2,10 +2,12 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each_char'
 
-describe "StringIO#chars" do
-  it_behaves_like :stringio_each_char, :chars
-end
+ruby_version_is ''...'2.8' do
+  describe "StringIO#chars" do
+    it_behaves_like :stringio_each_char, :chars
+  end
 
-describe "StringIO#chars when self is not readable" do
-  it_behaves_like :stringio_each_char_not_readable, :chars
+  describe "StringIO#chars when self is not readable" do
+    it_behaves_like :stringio_each_char_not_readable, :chars
+  end
 end
diff --git a/spec/ruby/library/stringio/codepoints_spec.rb b/spec/ruby/library/stringio/codepoints_spec.rb
index cc2e5d1b5d..6ca395c964 100644
--- a/spec/ruby/library/stringio/codepoints_spec.rb
+++ b/spec/ruby/library/stringio/codepoints_spec.rb
@@ -3,7 +3,10 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/codepoints'
 
-# See redmine #1667
-describe "StringIO#codepoints" do
-  it_behaves_like :stringio_codepoints, :codepoints
+ruby_version_is ''...'2.8' do
+
+  # See redmine #1667
+  describe "StringIO#codepoints" do
+    it_behaves_like :stringio_codepoints, :codepoints
+  end
 end
diff --git a/spec/ruby/library/stringio/each_char_spec.rb b/spec/ruby/library/stringio/each_char_spec.rb
index 7305162ee6..14b2f09a17 100644
--- a/spec/ruby/library/stringio/each_char_spec.rb
+++ b/spec/ruby/library/stringio/each_char_spec.rb
@@ -7,5 +7,5 @@ describe "StringIO#each_char" do
 end
 
 describe "StringIO#each_char when self is not readable" do
-  it_behaves_like :stringio_each_char_not_readable, :chars
+  it_behaves_like :stringio_each_char_not_readable, :each_char
 end
diff --git a/spec/ruby/library/stringio/each_codepoint_spec.rb b/spec/ruby/library/stringio/each_codepoint_spec.rb
index 85aa34d9d8..f18de22aad 100644
--- a/spec/ruby/library/stringio/each_codepoint_spec.rb
+++ b/spec/ruby/library/stringio/each_codepoint_spec.rb
@@ -5,5 +5,5 @@ require_relative 'shared/codepoints'
 
 # See redmine #1667
 describe "StringIO#each_codepoint" do
-  it_behaves_like :stringio_codepoints, :codepoints
+  it_behaves_like :stringio_codepoints, :each_codepoint
 end
diff --git a/spec/ruby/library/stringio/lines_spec.rb b/spec/ruby/library/stringio/lines_spec.rb
index d9dd26c2e2..0a2ab0d817 100644
--- a/spec/ruby/library/stringio/lines_spec.rb
+++ b/spec/ruby/library/stringio/lines_spec.rb
@@ -2,18 +2,20 @@ require_relative '../../spec_helper'
 require 'stringio'
 require_relative 'shared/each'
 
-describe "StringIO#lines when passed a separator" do
-  it_behaves_like :stringio_each_separator, :lines
-end
+ruby_version_is ''...'2.8' do
+  describe "StringIO#lines when passed a separator" do
+    it_behaves_like :stringio_each_separator, :lines
+  end
 
-describe "StringIO#lines when passed no arguments" do
-  it_behaves_like :stringio_each_no_arguments, :lines
-end
+  describe "StringIO#lines when passed no arguments" do
+    it_behaves_like :stringio_each_no_arguments, :lines
+  end
 
-describe "StringIO#lines when self is not readable" do
-  it_behaves_like :stringio_each_not_readable, :lines
-end
+  describe "StringIO#lines when self is not readable" do
+    it_behaves_like :stringio_each_not_readable, :lines
+  end
 
-describe "StringIO#lines when passed chomp" do
-  it_behaves_like :stringio_each_chomp, :lines
+  describe "StringIO#lines when passed chomp" do
+    it_behaves_like :stringio_each_chomp, :lines
+  end
 end