Issue #9915 has been updated by Usaku NAKAMURA.

Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: REQUIRED, 2.1:DONTNEED

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Bug #9915: Encoding error when inspecting an array containing Pathname withUTF-8 characters
https://bugs.ruby-lang.org/issues/9915#change-47110

* Author: Jack Nagel
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.0.0p451 (2014-02-24 revision 45167) [universal.x86_64-darwin13]
* Backport: 2.0.0: REQUIRED, 2.1: DONTNEED
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Given:

```
$ locale
LANG="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_CTYPE="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_ALL="en_US.UTF-8"
$ cat t.rb
# encoding: UTF-8
require "pathname"
puts [Pathname.new("QQ²».app")].inspect
```

this script produces the following on Ruby 1.9.3:

```
[#<Pathname:QQ²».app>]
```

on Ruby 2.0.0:

```
t.rb:3:in `inspect': inspected result must be ASCII only or use the same encoding with default external (Encoding::CompatibilityError)
	from t.rb:3:in `<main>'
```

and on Ruby 2.1.1:

```
[#<Pathname:QQ²».app>]
```

I believe Ruby 2.0.0 should produce the same result as 1.9.3 and 2.1.1.



-- 
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