Re: [HACKERS] ON_ERROR_ROLLBACK

On 12/30/2014 07:43 AM, David G Johnston wrote:
> Tom Lane-2 wrote
>> Bernd Helmle <
>
>> mailings@
>
>> > writes:
>>> --On 29. Dezember 2014 12:55:11 -0500 Tom Lane <
>
>> tgl@.pa
>
>> > wrote:
>>>> Given the lack of previous complaints, this probably isn't backpatching
>>>> material, but it sure seems like a bit of attention to consistency
>>>> would be warranted here.
>>
>>> Now that i read it i remember a client complaining about this some time
>>> ago. I forgot about it, but i think there's value in it to backpatch.
>>
>> Hm.  Last night I wrote the attached draft patch, which I was intending
>> to apply to HEAD only.  The argument against back-patching is basically
>> that this might change the interpretation of scripts that had been
>> accepted silently before.  For example
>>     \set ECHO_HIDDEN NoExec
>> will now select "noexec" mode whereas before you silently got "on" mode.
>> In one light this is certainly a bug fix, but in another it's just
>> definitional instability.
>>
>> If we'd gotten a field bug report we might well have chosen to back-patch,
>> though, and perhaps your client's complaint counts as that.
>>
>> Opinions anyone?
>
> -0.5 for back patching
>
> The one thing supporting this is that we'd potentially be fixing scripts
> that are broken but don't know it yet.  But the downside of changing active
> settings for working scripts - even if they are only accidentally working -
> is enough to counter that for me.  Being more liberal in our acceptance of
> input is more feature than bug fix even if we document that we accept more
> items.

It is more about being consistent then liberal. Personally I think a
situation where for one variable 0 = off but for another 0 = on,  is a bug

  That said it may be worth a documentation change and release note
> that those options are not liberal currently so as to help those relying on
> issues find and fix them proactively.
>
> David J.
>
>
>
>
> --
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>
>


--
Adrian Klaver
adrian.klaver@aklaver.com