Re: patch (for 9.1) string functions

I'm reviewing contrib part of the string functions patch.

I found an issue in sprintf() to print integer values. In this case,
'l' (for long type) is used on *all* platforms. For example, SELECT sprintf('%d', 10);
internally uses appendStringInfo('%ld', (int64) 10)

But there are some platform that requires to use %lld for int64 format, probably
on Windows. That's why we have INT64_FORMAT macro. sprintf() needs to be
adjusted to use INT64_FORMAT or similar portable codes.

Other portion of the patch seems to be OK for me,
unless you have still some idea to extend the feature.

2010/7/17 Pavel Stehule <pavel.stehule@gmail.com>:
> I have a one idea nonstandard enhancing of sprintf - relatie often job
> is a quoting in PostgreSQL. So sprintf should have a special formats
> for quoted values. What do you think about
>
> %lq ... literal quoted
> %iq ... ident quoted

They save some keyboard types to write quote_literal() and quote_ident(), right?
They seem to be useful and reasonable for me. One comment is that you might
want to print NULL values as "NULL" instead of "<NULL>" in such cases.

-- 
Itagaki Takahiro