From: usa@... Date: 2014-04-09T09:07:20+00:00 Subject: [ruby-core:61918] [ruby-trunk - Bug #9713] [Assigned] __FILE__ return unexpected encoding - breaks Dir.glob Issue #9713 has been updated by Usaku NAKAMURA. Status changed from Closed to Assigned Thomas Thomassen wrote: > In my test `__FILE__` is returned in the OEM encoding - not filesystem encoding. So, reopened. ---------------------------------------- Bug #9713: __FILE__ return unexpected encoding - breaks Dir.glob https://bugs.ruby-lang.org/issues/9713#change-46122 * Author: Thomas Thomassen * Status: Assigned * Priority: Normal * Assignee: cruby-windows * Category: platform/windows * Target version: current: 2.2.0 * ruby -v: ruby 2.2.0dev (2014-04-07 trunk 45528) [i386-mswin32_100] * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- **C:/���������/FILE.rb:** ~~~ # encoding: UTF-8 puts "Encoding.find 'filesystem': #{Encoding.find('filesystem').inspect}" puts "Encoding.find 'locale': #{Encoding.find('locale').inspect}" puts "Encoding.default internal: #{Encoding.default_internal.inspect}" puts "Encoding.default external: #{Encoding.default_external.inspect}" puts "Encoding.locale_charmap: #{Encoding.locale_charmap.inspect}" puts "__FILE__: #{__FILE__.encoding.inspect}" puts "'foobar': #{'foobar'.encoding.inspect}" ~~~ **C:/FILE.rb:** ~~~ # encoding: UTF-8 puts "Encoding.find 'filesystem': #{Encoding.find('filesystem').inspect}" puts "Encoding.find 'locale': #{Encoding.find('locale').inspect}" puts "Encoding.default internal: #{Encoding.default_internal.inspect}" puts "Encoding.default external: #{Encoding.default_external.inspect}" puts "Encoding.locale_charmap: #{Encoding.locale_charmap.inspect}" puts "__FILE__: #{__FILE__.encoding.inspect}" puts "'foobar': #{'foobar'.encoding.inspect}" puts "" puts "Loading C:/���������/FILE.rb ..." require "C:/���������/FILE.rb" ~~~ **Results:**  ~~~ c:\ruby-220\usr\bin>ruby "C:\FILE.rb" Encoding.find 'filesystem': #<Encoding:Windows-1252> Encoding.find 'locale': #<Encoding:IBM437> Encoding.default internal: nil Encoding.default external: #<Encoding:IBM437> Encoding.locale_charmap: "CP437" __FILE__: #<Encoding:IBM437> 'foobar': #<Encoding:UTF-8> Loading C:/???/FILE.rb ... Encoding.find 'filesystem': #<Encoding:Windows-1252> Encoding.find 'locale': #<Encoding:IBM437> Encoding.default internal: nil Encoding.default external: #<Encoding:IBM437> Encoding.locale_charmap: "CP437" __FILE__: #<Encoding:UTF-8> 'foobar': #<Encoding:UTF-8> c:\ruby-220\usr\bin> ~~~ Now, lets see how this affects Dir.glob: Test scenario - a folder structure like this: ~~~ C:/test/ C:/test/foo/ C:/test/���������/ ~~~ **C:/FILE.rb** ~~~ # encoding: UTF-8 puts "Encoding.find 'filesystem': #{Encoding.find('filesystem').inspect}" puts "Encoding.find 'locale': #{Encoding.find('locale').inspect}" puts "Encoding.default internal: #{Encoding.default_internal.inspect}" puts "Encoding.default external: #{Encoding.default_external.inspect}" puts "Encoding.locale_charmap: #{Encoding.locale_charmap.inspect}" puts "__FILE__: #{__FILE__.encoding.inspect}" puts "'foobar': #{'foobar'.encoding.inspect}" puts "" pattern = File.join(File.dirname(__FILE__), "test", "*") puts "pattern.encoding: #{pattern.encoding.inspect}" result = Dir.glob(pattern) p result p result.map { |file| file.encoding } puts "" puts "force encoding:" pattern.force_encoding("UTF-8") result = Dir.glob(pattern) p result p result.map { |file| file.encoding } ~~~ **Result:** ~~~ c:\ruby-220\usr\bin>ruby "C:\FILE.rb" Encoding.find 'filesystem': #<Encoding:Windows-1252> Encoding.find 'locale': #<Encoding:IBM437> Encoding.default internal: nil Encoding.default external: #<Encoding:IBM437> Encoding.locale_charmap: "CP437" __FILE__: #<Encoding:IBM437> 'foobar': #<Encoding:UTF-8> pattern.encoding: #<Encoding:IBM437> ["C:/test/foo", "C:/test/???"] [#<Encoding:IBM437>, #<Encoding:IBM437>] force encoding: ["C:/test/foo", "C:/test/\u3066\u3059\u3068"] [#<Encoding:UTF-8>, #<Encoding:UTF-8>] c:\ruby-220\usr\bin> ~~~ Observe how when Dir.glob is fed a string based on __FILE__ it will return strings in the same encoding, even though the string should include Unicode characters. The Unicode characters are replaced by question marks. (Actual ASCII bytes for question mark: 63) Just by forcing the input string to UTF-8 will make Dir.glob return the expected strings with correct Unicode characters. I'm unsure of where the bug lies, but in terms of what I expected I would not have expected __FILE__ to return different encoding depending on the executing file containing Unicode characters. All files have been marked as UTF-8 in the file header. ---Files-------------------------------- media-20140407.png (83.1 KB) -- https://bugs.ruby-lang.org/