From: duerst@... Date: 2014-07-23T10:11:25+00:00 Subject: [ruby-core:63961] [ruby-trunk - Feature #9111] Encoding-free String comparison Issue #9111 has been updated by Martin D��rst. Related to Feature #10084: Add Unicode String Normalization to String class added ---------------------------------------- Feature #9111: Encoding-free String comparison https://bugs.ruby-lang.org/issues/9111#change-47981 * Author: Tsuyoshi Sawada * Status: Open * Priority: Normal * Assignee: * Category: * Target version: ---------------------------------------- =begin Currently, strings with the same content but with different encodings count as different strings. This causes strange behaviour as below (noted in StackOverflow question http://stackoverflow.com/questions/19977788/strange-behavior-in-packed-ruby-strings#19978206): [128].pack("C") # => "\x80" [128].pack("C") == "\x80" # => false Since `[128].pack("C")` has the encoding ASCII-8BIT and `"\x80"` (by default) has the encoding UTF-8, the two strings are not equal. Also, comparison of strings with different encodings may end up with a messy, unintended result. I suggest that the comparison `String#<=>` should not be based on the respective encoding of the strings, but all the strings should be internally converted to UTF-8 for the purpose of comparison. =end -- https://bugs.ruby-lang.org/