On Monday 13 April 2009 22:39:58 Andrew Dunstan wrote:
> Umm, but isn't that because your encoding is using one code point?
>
> See the OP's explanation w.r.t. canonical equivalence.
>
> This isn't about the number of bytes, but about whether or not we should
> count characters encoded as two or more combined code points as a single
> char or not.
Here is a test case that shows the problem (if your terminal can display
combining characters (xterm appears to work)):
SELECT U&'\00E9', char_length(U&'\00E9');?column? | char_length
----------+-------------é | 1
(1 row)
SELECT U&'\0065\0301', char_length(U&'\0065\0301');?column? | char_length
----------+-------------é | 2
(1 row)
