On Tuesday 14 April 2009 18:54:33 Tom Lane wrote:
> The other proposal that seemed
> attractive to me was a decode-like function:
>
> uescape('foo\00e9bar')
> uescape('foo\00e9bar', '\')
This was discussed previously, but rejected with the following argument:
There are some other disadvantages for making a function call. You
couldn't use that kind of literal in any other place where the parser
calls for a string constant: role names, tablespace locations,
passwords, copy delimiters, enum values, function body, file names.
Some of those appear to be very plausible use cases.