osx - Mac vs PC Text Encoding -

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i've noticed different itunes when export music library.

i have song é (that is, small latin e acute accent) , when export library in windows, gets encoded @ %c3%a9, when export library mac, normal 'e' printed, followed %cc%81.

example:

song name: héllo world windows export: h%c3%a9llo world mac export: he%cc%81llo world

this important me program i'm making where, in windows version, decode encoding, doesn't work if file comes mac.

so why there difference? there place can see differences , see mac encodings are? there maybe object-c routine decode these strings?

thanks.

c3a9 utf-8 encoding character é.
cc81 utf-8 encoding combining acute accent character (u+0301).

an "e" followed combining acute accent combines character "é".
2 different forms of unicode normalization.

why 1 itunes prefers 1 on other don't know, there's no inherent reason so.


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