[ruby-core:76889] [Ruby trunk Bug#12483] File.expand_path does not normalize cwd

Issue #12483 has been updated by Tomoyuki Chikanaga.

Backport changed from 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED to 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

ruby_2_3 r55909 merged revision(s) 55385,55390.

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Bug #12483: File.expand_path does not normalize cwd
https://bugs.ruby-lang.org/issues/12483#change-60111

* Author: Nobuyoshi Nakada
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: 
* Backport: 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE
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https://github.com/rails/rails/issues/25303#issuecomment-224834804

> I notice some other inconsistencies that may be related. Within a directory called "À" `Dir.pwd` returns a composed form, while `expand_path` returns a decomposed one:
> 
> ```ruby
> À $ ruby -e 'p Dir.pwd.bytes'
> [47, 85, 115, 101, 114, 115, 47, 102, 120, 110, 47, 116, 109, 112, 47, 195, 128]
> 
> À $ ruby -e 'p File.expand_path(".").bytes'
> [47, 85, 115, 101, 114, 115, 47, 102, 120, 110, 47, 116, 109, 112, 47, 65, 204, 128]
> ```




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