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Date: Wed, 23 Jul 2014 22:16:40 -0400
From: "" <>
Subject: Re: Locale bikeshed time

On 07/23/2014 09:57 PM, Rich Felker wrote:
> On Wed, Jul 23, 2014 at 09:07:22PM -0400, wrote:
>> In terms of practicality: for many of the calendars I mentioned,
>> conversion involves not only a formula, but also date- and
>> year-based considerations.  A correct implementation of all the %E?
>> specifiers is accordingly going to include many bytes of code that
>> probably shouldn't be pulled in whenever a "random" static
>> application uses strftime.  That being said, if musl's
> Obviously unless the set of such rules is fixed and free of the need
> for external updates, it would need to be represented as *data* that's
> loaded as part of the locale file and not as code. Or as a query to a
> (local) service.
>> implementation of %E? could use weak aliases and standardized hooks,
>> then applications or calendar-specific libraries could provide these
>> hooks and still use the libc strftime, rather than a complex system
>> of wrappers and conditionals.
> That's now how weak symbols work -- they're not a way to add plug-in
> code.
> Rich
Thanks for the clarification.  This leaves a query to a local service 
the more likely solution since for at least the Hijri (Muslim) and 
Hebrew (Jewish) calendars, accurate conversion cannot be based on data 
or tables alone.


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