Thank you very much for the information.

I even didn't think about the normalization. Wow.. it is quite complicated.
I tried the 4 methods, -precomposedStringWith*[Canonical/Compatibility]*Mapping and -decomposedStringWith*[Canonical/Compatibility]*Mapping.

The result was that [NSString UTF8String] returns "precomposed" version, while the one used in the FCP was "decomposed".

Thank you again.

Ken Thomases wrote:
On Jun 18, 2008, at 1:49 PM, JongAm Park wrote:

Can anyone tell me why the two different data source are displayed as same "자연", while what it contains are different?

I haven't looked into the specific character sequences in-depth, but I suspect the difference is in Normalization Forms. Specifically, form C vs. D.

http://unicode.org/reports/tr15/

The idea is that the same character can be obtained from a single code point or by several combining code points.

In Cocoa, see -precomposedStringWithCanonicalMapping and -decomposedStringWithCanonicalMapping.

Cheers,
Ken

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