Bug #9883: Different behaviour between `==` and hash key lookup regarding multibyte character fragment

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 2.1

[sawa (Tsuyoshi Sawada)]

This question is reported in stackoverflow (http://stackoverflow.com/questions/23946127). When a multibyte character is split by slice, == ignores the split fragment of the character, while key lookup on hash does not:

s1 = "’xxxxxxxxxxxxxxxxxxxxxxxx".slice(1, 24)
s2 = "xxxxxxxxxxxxxxxxxxxxxxxx"

s1 == s2          # => true
{s2=>""}.key?(s1) # => false

This is inconsistent, and I believe either of the above two is a bug. If it is not a bug, but intended, then it is misleading, and I propose the feature should be changed.

[phasis68 (Heesob Park)]

This issue is a duplicate of Bug #9882.

And already solved with changeset r46243.

[nobu (Nobuyoshi Nakada)]

• Is duplicate of Bug #9882: Issue with hash string keys added

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• Description updated (diff)