On Sun, Mar 28, 2021 at 06:32:34PM +0200, tomas@tuxteam.de wrote:
> On Sun, Mar 28, 2021 at 11:24:28AM -0500, Peng Yu via Libc-help wrote:
> > Hi,
> > 
> > I don't find the manpage of register_printf_specifier (I checked on
> > Linux). Is it available anywhere?
> > 
> > I also checked a few other functions in printf.h. But I don't find
> > their manpages. Are the manpages of printf.h available?
> 
> Hah. A friend of mine is working on one, AFAIK for the Linux documentation
> project. I was trying to free some time to translate it to info.

OK. More details:

  - register_printf_function is, AFAIK an old interface and is
    deprecated, although I'd double-check with people here, who
    definitely know more than me.
    That said, it's documented in the libc Info file, or, if
    you prefer Web browsers, here:

    https://www.gnu.org/software/libc/manual/html_node/Registering-New-Conversions.html

  - these days one is supposed to use the pair register_printf_specifier,
    register_printf_type; man pages, as I said, coming soon.

Cheers
 - t