Issue #10002 has been updated by Yukihiro Matsumoto.


The current implementation of case conversion methods in String class only understands ASCII characters.
We'd like to enhance it when possible.  But we have to know how each character should be converted.
For example, how should we convert "" (eszett)?

Matz.


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Feature #10002: String swapcase
https://bugs.ruby-lang.org/issues/10002#change-47522

* Author: Andreas Runk
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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Hi, the ruby version 2.1.2 has a problem with the .swapcase function and german letters. 
E.g. `"".swapcase` does return "" but should be "". 



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