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Re: Re: proposal: a width specification for s specifier (format function), fix behave when positional and ordered placeholders are used

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: proposal: a width specification for s specifier (format function), fix behave when positional and ordered placeholders are used
Date: 2013-01-29 17:19:56
Message-ID: CAFj8pRDiMjrF5DUVkAmT83hXEpwxAoBC8pDEYDes6B69=KxKHw@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
2013/1/28 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
> Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com> writes:
>> On 28 January 2013 20:40, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>>> 2013/1/28 Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>:
>>>> flags - not currently implemented. Pavel's second patch adds support
>>>> for the '-' flag for left justified string output. However, I think
>>>> this should support all datatypes (i.e., %I and %L as well as %s).
>
>>> no - surely not - I% and L% is PostgreSQL extension and left or right
>>> alignment is has no sense for PostgreSQL identifiers and PostgreSQL
>>> literals.
>
>> Left/right alignment and padding in printf() apply to all types, after
>> the data value is converted to a string. Why shouldn't that same
>> principle apply to %I and %L?
>
> I agree with Dean --- it would be very strange for these features not to
> apply to all conversion specifiers (excepting %% of course, which isn't
> really a conversion specifier but an escaping hack).

ok - I have no problem with it - after some thinking - just remove one check.

Regards

Pavel

>
>                         regards, tom lane


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