[Issue 10204] New: std.string does not take title case into account

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10204

           Summary: std.string does not take title case into account
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: monarchdodra at gmail.com


--- Comment #0 from monarchdodra at gmail.com 2013-05-29 09:53:36 PDT ---
Unicode 6.2.0 introduces the notion of "Title case", making the trio of:

"Lower case" => "Title case" => "Upper case"

Example:
01c6  01c5  01c4
dž     Dž     DŽ

This means that functions such as "capitalize" are wrong because they make the
assumption that "Capitalize" == "Uppercase"

Also, the tests such as:

if(std.uni.isLower(c))
    c = std.uni.toUpper(c);

are wrong, as non lower case characters may have upper case representations...

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