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Re: xpath processing brain dead

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Nikolay Samokhvalov <samokhvalov(at)gmail(dot)com>
Subject: Re: xpath processing brain dead
Date: 2009-02-26 18:34:40
Message-ID: 49A6E0C0.8050307@dunslane.net (view raw or flat)
Thread:
Lists: pgsql-hackers

Tom Lane wrote:
> Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
>   
>> Tom Lane wrote:
>>     
>>> I'm okay with removing this for 8.4, but I think it's too late to
>>> change the behavior of 8.3.
>>>       
>
>   
>> It's never too late to fix a bug.
>>     
>
> When the proposed fix involves breaking cases that used to behave
> usefully, you need a much stronger argument than that.
>   


What I have proposed for 8.3 should not break a single case that 
currently behaves usefully. If anyone has a counter-example please show it.

What I have proposed for 8.4 possibly would break current "useful" 
behaviour (FSVO "useful"), but should be done anyway on correctness grounds.


cheers

andrew



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