Respect implicit encoding of thorfiles

lib/thor/util.rb

@@ -150,7 +150,7 @@ def find_class_and_command_by_namespace(namespace, fallback = true)
       # inside the sandbox to avoid namespacing conflicts.
       #
       def load_thorfile(path, content = nil, debug = false)
-        content ||= File.binread(path)
+        content ||= File.read(path)
 
         begin
           Thor::Sandbox.class_eval(content, path)

spec/encoding_spec.rb

@@ -0,0 +1,22 @@
+require "helper"
+require "thor/base"
+
+
+describe "file's encoding" do
+  def load_thorfile(filename)
+    Thor::Util.load_thorfile(File.expand_path("./fixtures/#{filename}", __dir__))
+  end
+
+  it "respects explicit UTF-8" do
+    load_thorfile("encoding_with_utf8.thor")
+    expect(capture(:stdout) { Thor::Sandbox::EncodingWithUtf8.new.invoke(:encoding) }).to match(/ok/)
+  end
+  it "respects explicit non-UTF-8" do
+    load_thorfile("encoding_other.thor")
+    expect(capture(:stdout) { Thor::Sandbox::EncodingOther.new.invoke(:encoding) }).to match(/ok/)
+  end
+  it "has implicit UTF-8" do
+    load_thorfile("encoding_implicit.thor")
+    expect(capture(:stdout) { Thor::Sandbox::EncodingImplicit.new.invoke(:encoding) }).to match(/ok/)
+  end
+end

spec/fixtures/encoding_implicit.thor

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class EncodingImplicit < Thor
+  SOME_STRING = "Some λέξεις 一些词 🎉"
+
+  desc "encoding", "tests that encoding is correct"
+
+  def encoding
+    puts "#{SOME_STRING.inspect}: #{SOME_STRING.encoding}:"
+    if SOME_STRING.encoding.name == "UTF-8"
+      puts "ok"
+    else
+      puts "expected #{SOME_STRING.encoding.name} to equal UTF-8"
+    end
+  end
+end

spec/fixtures/encoding_other.thor

@@ -0,0 +1,17 @@
+# encoding: ISO-8859-7
+# frozen_string_literal: true
+
+class EncodingOther < Thor
+  SOME_STRING = "Some ������"
+
+  desc "encoding", "tests that encoding is correct"
+
+  def encoding
+    puts "#{SOME_STRING.inspect}: #{SOME_STRING.encoding}:"
+    if SOME_STRING.encoding.name == "ISO-8859-7"
+      puts "ok"
+    else
+      puts "expected #{SOME_STRING.encoding.name} to equal ISO-8859-7"
+    end
+  end
+end

spec/fixtures/encoding_with_utf8.thor

@@ -0,0 +1,17 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class EncodingWithUtf8 < Thor
+  SOME_STRING = "Some λέξεις 一些词 🎉"
+
+  desc "encoding", "tests that encoding is correct"
+
+  def encoding
+    puts "#{SOME_STRING.inspect}: #{SOME_STRING.encoding}:"
+    if SOME_STRING.encoding.name == "UTF-8"
+      puts "ok"
+    else
+      puts "expected #{SOME_STRING.encoding.name} to equal UTF-8"
+    end
+  end
+end