Re: BUG #5831: Splitting string into char array with string_to_array does not work

"Splitting string into char array with string_to_array" <valgog@gmail.com> writes:
> I cannot really remember now for sure, but the splitting string into array
> using an empty string ('') worked for me on pre-9.0 versions to get array of
> string chars.

Really?  I get this in all versions since 7.4, where string_to_array was
introduced:

regression=# select string_to_array('ab', '' );
 string_to_array
-----------------
 {ab}
(1 row)

            regards, tom lane