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Re: Request comments - printx

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supercat@casperkitty.com writes:

> On Friday, October 14, 2016 at 2:03:56 PM UTC-5, Tim Rentsch wrote:
>> I am soliciting comments and suggestions for a small family of
>> functions (and a few supporting macro and type definitions) which
>> I have taken to calling "printx", with printx() being the
>> representative function of the family.
>
> I would suggest that one start by defining a single unified vprintf
> variant which can be used to implement vsprintf, vfprintf, vprintf,
> etc.  by accepting a double-indirect pointer to an output function,
> and which passes that pointer to the output function itself.  This
> would allow e.g. vfprintf to be implemented as:  [code omitted]
>
> Such a function could then support additional formatting options by
> having it invoke the passed-in function with various negative
> lengths when unknown formatting characters were encountered [most
> likely, a negative length would indicate that "out_dat" will hold a
> pointer to a structure describing what needs to be done].
>
> Having one function combine the roles of the equivalents to fprintf,
> printf, sprintf, etc.  seems better than having different functions
> for the different purposes.

Unless I am misunderstanding you, these comments are either
orthogonal to what I'm asking about or purely about implementation.
Providing functions that are plug compatible with printf(), etc, is
a given in the problem statement and cannot be changed.  My question
is about what interface and/or functionality might be provided
beyond this minimal specification.  Taking the general outline of
printx() functions as fixed and not subject to change, do you have
any comments or suggestions about additional interface and/or
functionality?

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Thread

Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-14 12:03 -0700
  Re: Request comments - printx supercat@casperkitty.com - 2016-10-14 13:06 -0700
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-15 15:28 -0700
      Re: Request comments - printx supercat@casperkitty.com - 2016-10-17 10:26 -0700
        Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-18 08:42 -0700
          Re: Request comments - printx supercat@casperkitty.com - 2016-10-20 09:12 -0700
            Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-22 19:23 -0700
  Re: Request comments - printx Ian Collins <ian-news@hotmail.com> - 2016-10-16 17:30 +1300
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-16 00:22 -0700
      Re: Request comments - printx Ian Collins <ian-news@hotmail.com> - 2016-10-16 20:37 +1300
        Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-17 11:22 -0700
  Re: Request comments - printx BartC <bc@freeuk.com> - 2016-10-16 23:44 +0100
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-17 10:29 -0700
      Re: Request comments - printx BartC <bc@freeuk.com> - 2016-10-17 18:57 +0100
        Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-18 08:20 -0700
          Re: Request comments - printx Nick Bowler <nbowler@draconx.ca> - 2016-10-19 17:10 +0000
            Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-20 08:58 -0700
              Re: Request comments - printx raltbos@xs4all.nl (Richard Bos) - 2016-10-23 13:37 +0000
                Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-23 14:16 -0700
  Re: Request comments - printx Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-18 02:41 -0700
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-18 08:37 -0700
      Re: Request comments - printx Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-18 08:45 -0700
      Re: Request comments - printx Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-10-18 09:46 -0700
        Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-18 23:33 -0700
  Request comments - printx asetofsymbols@gmail.com - 2016-10-23 00:39 -0700
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-10-23 14:08 -0700
  Re: Request comments - printx Richard Heathfield <rjh@cpax.org.uk> - 2016-11-09 16:32 +0000
    Re: Request comments - printx "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2016-11-10 01:03 +0800
    Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-11-12 17:53 -0800
      Re: Request comments - printx Richard Heathfield <rjh@cpax.org.uk> - 2016-11-13 16:43 +0000
        Re: Request comments - printx Tim Rentsch <txr@alumni.caltech.edu> - 2016-11-15 10:37 -0800

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