Unicode ö example
Last updated at 8:47 pm UTC on 19 December 2015
The sequences <o, combining-diaeresis> (NFD) and <ö> are canonical equivalents.
combining diaresis in Normalization test cases
00F6;00F6;006F 0308;00F6;006F 0308; # (ö; ö; o◌̈; ö; o◌̈; ) LATIN SMALL LETTER O WITH DIAERESIS
This case should not be confused with language-specific collation or matching, which may add other
equivalencies.
For example, in Swedish, ö is treated as a completely
different letter from o and is collated after z.
In German, ö is weakly equivalent to oe and is collated with oe.
In English, ö is just an o with a diacritic that indicates that it is pronounced separately
from the previous letter (as in coöperate) and is collated with o.
http://unicode.org/charts/normalization/index.html
