–Reference:
–http://akisute.com/2010/05/utf-8-normalize.html
–http://nomenclator.la.coocan.jp/unicode/normalization.htm

set a to "がぎぐげご"
set aStr to current application’s NSString’s stringWithString:a
log hexDumpString(aStr)
–> {"E3", "81", "8C", "E3", "81", "8E", "E3", "81", "90", "E3", "81", "92", "E3", "81", "94"}

–NFD
set aNFD to aStr’s decomposedStringWithCanonicalMapping()
–>　　(NSString) "がぎぐげご"
log hexDumpString(aNFD)
–> {"E3", "81", "8B", "E3", "82", "99", "E3", "81", "8D", "E3", "82", "99", "E3", "81", "8F", "E3", "82", "99", "E3", "81", "91", "E3", "82", "99", "E3", "81", "93", "E3", "82", "99"}

–NFKD
set aNFKD to aStr’s decomposedStringWithCompatibilityMapping()
–>　　(NSString) "がぎぐげご"
log hexDumpString(aNFKD)
–> {"E3", "81", "8B", "E3", "82", "99", "E3", "81", "8D", "E3", "82", "99", "E3", "81", "8F", "E3", "82", "99", "E3", "81", "91", "E3", "82", "99", "E3", "81", "93", "E3", "82", "99"}

–NFC
set aNFC to aStr’s precomposedStringWithCanonicalMapping()
–>　　(NSString) "がぎぐげご"
log hexDumpString(aNFC)
–> {"E3", "81", "8C", "E3", "81", "8E", "E3", "81", "90", "E3", "81", "92", "E3", "81", "94"}

–NFKC
set aNFKC to aStr’s precomposedStringWithCompatibilityMapping()
–>　　(NSString) "がぎぐげご"
log hexDumpString(aNFKC)
–> {"E3", "81", "8C", "E3", "81", "8E", "E3", "81", "90", "E3", "81", "92", "E3", "81", "94"}

–NSStringをhexdumpする
on hexDumpString(theNSString)
　　set theNSData to theNSString’s dataUsingEncoding:(current application’s NSUTF8StringEncoding)
　　set theString to (theNSData’s |description|()’s uppercaseString())
　　
　　–Remove "<" ">" characters in head and tail
　　set tLength to (theString’s |length|()) – 2
　　set aRange to current application’s NSMakeRange(1, tLength)
　　set theString2 to theString’s substringWithRange:aRange
　　
　　–Replace Space Characters
　　set aString to current application’s NSString’s stringWithString:theString2
　　set bString to aString’s stringByReplacingOccurrencesOfString:" " withString:""
　　
　　set aResList to splitString(bString, 2)
　　–> {​​​​​"E3", ​​​​​"81", ​​​​​"82", ​​​​​"E3", ​​​​​"81", ​​​​​"84", ​​​​​"E3", ​​​​​"81", ​​​​​"86", ​​​​​"E3", ​​​​​"81", ​​​​​"88", ​​​​​"E3", ​​​​​"81", ​​​​​"8A"​​​}
　　
　　return aResList
　　
end hexDumpString

–Split NSString in specified aNum characters
on splitString(aText, aNum)
　　
　　set aStr to current application’s NSString’s stringWithString:aText
　　if aStr’s |length|() ≤ aNum then return aText
　　
　　set anArray to current application’s NSMutableArray’s new()
　　set mStr to current application’s NSMutableString’s stringWithString:aStr
　　
　　set aRange to current application’s NSMakeRange(0, aNum)
　　
　　repeat while (mStr’s |length|()) > 0
　　　　if (mStr’s |length|()) < aNum then
　　　　　　anArray’s addObject:(current application’s NSString’s stringWithString:mStr)
　　　　　　mStr’s deleteCharactersInRange:(current application’s NSMakeRange(0, mStr’s |length|()))
　　　　else
　　　　　　anArray’s addObject:(mStr’s substringWithRange:aRange)
　　　　　　mStr’s deleteCharactersInRange:aRange
　　　　end if
　　end repeat
　　
　　return (current application’s NSArray’s arrayWithArray:anArray) as list
　　
end splitString