[PATCH 03/14] Add internal implementations for argp.h, err.h, and error.h functions

[Joseph Myers]

On Wed, 20 Jun 2018, Gabriel F. T. Gomes wrote:

> Since the introduction of explicit flags in the internal implementation
> of the printf family of functions, the 'mode' parameter can be used to
> select which format long double parameters have (with the mode flag:
> PRINTF_LDBL_IS_DBL).  This patch uses this feature in the implementation
> of some functions in argp.h, err.h, and error.h (only those that take a
> format string and positional parameters).  Future patches will add
> support for 'nldbl' and 'ieee128' versions of these functions.

It's probably best to work with Paul on review of this patch, in case 
there are any issues where doing things one way rather than another is 
helpful to keeping the glibc and gnulib sources of the argp and error 
interfaces in sync as much as possible.

-- 
Joseph S. Myers
joseph@codesourcery.com