Issue #13220 has been updated by Shyouhei Urabe.

Status changed from Open to Feedback

Can you split this request into several ones?  Because what this ticket aims is a bit too large and perhaps vague.  It is advised that you should create an issue with an obvious goal.

For instance if you believe String#[] understand unicode grapheme clusters (which is what assumption #2 is about), please make a ticket as such.

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Bug #13220: Enhance support of Unicode strings manipulation
https://bugs.ruby-lang.org/issues/13220#change-62999

* Author: Radovan Smitala
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin16]
* Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
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Hi,

last days, Starr Horne posted very interesting testing results about manipulation unicode strings in Ruby 2.4.
And many methods doesn't work as excepted.

Article:

http://blog.honeybadger.io/ruby-s-unicode-support/



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