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Groups > comp.lang.c > #94905

Re: Request comments - printx

From Tim Rentsch <txr@alumni.caltech.edu>
Newsgroups comp.lang.c
Subject Re: Request comments - printx
Date 2016-10-16 00:22 -0700
Organization A noiseless patient Spider
Message-ID <kfn60os69nb.fsf@x-alumni2.alumni.caltech.edu> (permalink)
References <kfnh98e7nxs.fsf@x-alumni2.alumni.caltech.edu> <e6ge41Fu8usU2@mid.individual.net>

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Ian Collins <ian-news@hotmail.com> writes:

> On 10/15/16 08:03 AM, 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.
>
> This looks really interesting and I like the way you have kept
> things well within the spirit of printf.

Thank you, that is nice to hear.

> Do you have a reference implementation written?

Yes, modulo some finishing touches near the edges.  The examples
I showed were all run through that implementation.  Also it
passes all the cases in my little test suite, which is currently
somewhere between 40 and 50 cases.  (I'm not going to say whether
the tests were written first. :)

> I assume you would also consider an equivalent "scanx"?

I would consider it, sure.  Having said that, *scanf() is a very
different kind of beast, and I'm not sure how the printx() ideas
would map onto scanx().  The first order of business is to get
printx() finalized and wrapped up;  after that's done we can
come back to what might work for scanx().

Do you have any other comments or suggestions for what additional
functionality to make available, or how?  One thing I know it
would be nice to be able to do but I'm not sure how is passing
flags along in a printx_send() call.  For example, in the complex
number formatters, it would be nice to be able to pick up the
flag characters in the original %! conversion, and use those
flags on the two components of the complex number.  There is an
obvious way to do that, by constructing a format string for the
call to printx_send(), but that's a bit heavy-handed - I am
hoping for some better idea(s) about how to arrange such things.

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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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