From: bhock@...
Date: 2019-01-25T20:11:03+00:00
Subject: [ruby-core:91268] [Ruby trunk Bug#15564] Pathname#+(pathpart) returns pathpart when pathpart is absolute

Issue #15564 has been reported by Malakai97 (Bryan Hockey).

----------------------------------------
Bug #15564: Pathname#+(pathpart) returns pathpart when pathpart is absolute
https://bugs.ruby-lang.org/issues/15564

* Author: Malakai97 (Bryan Hockey)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-linux]
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
```
abs = Pathname.new("/abs/dir")
my = Pathname.new("/my/path")

# actual
my/abs # => #<Pathname:/abs/dir>

# expected
my/abs # => #<Pathname:/my/dir/abs/dir>
```

While this behavior is desirable in #expand_path, here I believe it is very surprising.

I am happy to submit a patch for this should it be confirmed as a bug.



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