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

Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> 2013/1/28 Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>:
>> Starting with the first patch - it issues a new WARNING if the format
>> string contains a mixture of format specifiers with and without
>> parameter indexes (e.g., 'Hello %s, %1$s').
>>
>> Having thought about it a bit, I really don't like this for a number of reasons:

> I am not sure what you dislike?
> warnings or redesign of behave.

Both. If we had done this when we first implemented format(), it'd be
fine, but it's too late to change it now. There very likely are
applications out there that depend on the current behavior. As Dean
says, it's not incompatible with SUS, just a superset, so ISTM this
patch is proposing to remove documented functionality --- for no very
strong reason.

I vote for rejecting this change entirely.

regards, tom lane