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Re^7: Sorting Vietnamese text

by Atacama (Sexton)
on Dec 25, 2013 at 04:28 UTC ( #1068346=note: print w/ replies, xml ) Need Help??

in reply to Re^6: Sorting Vietnamese text
in thread Sorting Vietnamese text

Any other ideas?
A quick search shows that vietnamese words are sorted by letters first, then tone-marks. Sometimes tone-marks are even ignored. So that's probably correct:
ỳ :
ỷ :
ỳ ạch : ...looks like Unicode::Collate does it right, but additional first-character ordering is required to get a dictionary order (happens to be different from a simple sorted order in vietnamese).

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