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Re: deprecate backslash-newline (line continuation) ?

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: deprecate backslash-newline (line continuation) ?
Date 2023-05-22 22:15 +0100
Organization A noiseless patient Spider
Message-ID <87ttw4ax09.fsf@bsb.me.uk> (permalink)
References <7ad3c6f6-e8f1-4482-8e06-4f4e85ba32f3n@googlegroups.com> <875y8kcrj8.fsf@bsb.me.uk> <cd983a47-bc8d-417d-84a6-2003ab1704den@googlegroups.com>

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Thiago Adams <thiago.adams@gmail.com> writes:

> On Monday, May 22, 2023 at 12:30:52 PM UTC-3, Ben Bacarisse wrote:
>> Thiago Adams <thiago...@gmail.com> writes: 
>> 
>> > In C, the line continuation works as if deleted in the first stages 
>> > of compilation. 
>> > So in C it can be in ANY position. 
>> > For instance 
>> > 
>> > #define M\ 
>> > ACRO 1 
>> > MACRO 1 
>> > 
>> > // a b \ 
>> > c 
>> > 
>> > I think this should be removed from C!
>> Why? What is the benefit? 
>
> It is a simplification.

Your suggestion is more complex.  The \ rule is trivial to describe and
implement.

> Similar of removal of trigraphs etc..

That's a removal.  It's bound to make C simpler.  You are suggesting
something quite different from a plain removal.

>>How much code will break if this changes?
>
> That depends how it is defined/implemented.

So you don't yet know how much existing code you expect will break?  OK.

> If backslash-new-line is considered a whitespace
>
> Then
> #define A \
> B\
> C
>
> A would expand to B C instead of BC
> But code that depends on spaces are already dangerous .
>
>> > The only reason to use line continuation is at end of macros.
>> You mean that's the only thing you want them for! Most low-level line 
>> continuation conventions date from the days when some systems had 
>> fixed-length record file formats. It makes lots of things easier if you 
>> can continue a logical line at any point with a mechanism that sits 
>> below the tokeniser.
> It is a modernization we don't need this anymore.

Any evidence?  Have you done any research?

-- 
Ben.

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Thread

deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 05:19 -0700
  Re: deprecate backslash-newline (line continuation) ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-05-22 16:30 +0100
    Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 11:14 -0700
      Re: deprecate backslash-newline (line continuation) ? David Brown <david.brown@hesbynett.no> - 2023-05-22 21:46 +0200
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 13:06 -0700
      Re: deprecate backslash-newline (line continuation) ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-05-22 22:15 +0100
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 15:10 -0700
          Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 15:56 -0700
            Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 17:45 -0700
              Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 17:47 -0700
                Re: deprecate backslash-newline (line continuation) ? Öö Tiib <ootiib@hot.ee> - 2023-05-23 01:24 -0700
                Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 03:59 -0700
                Re: deprecate backslash-newline (line continuation) ? Bart <bc@freeuk.com> - 2023-05-23 16:51 +0100
                Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 10:40 -0700
                Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 11:07 -0700
                Re: deprecate backslash-newline (line continuation) ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-05-23 13:31 -0700
    Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 11:29 -0700
      Re: deprecate backslash-newline (line continuation) ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-05-22 22:18 +0100
        Re: deprecate backslash-newline (line continuation) ? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-07-20 09:14 -0700
  Re: deprecate backslash-newline (line continuation) ? David Brown <david.brown@hesbynett.no> - 2023-05-22 17:31 +0200
    Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 11:17 -0700
      Re: deprecate backslash-newline (line continuation) ? David Brown <david.brown@hesbynett.no> - 2023-05-22 21:52 +0200
  Re: deprecate backslash-newline (line continuation) ? Öö Tiib <ootiib@hot.ee> - 2023-05-22 09:10 -0700
  Re: deprecate backslash-newline (line continuation) ? Kaz Kylheku <864-117-4973@kylheku.com> - 2023-05-22 19:10 +0000
    Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 12:25 -0700
      Re: deprecate backslash-newline (line continuation) ? David Brown <david.brown@hesbynett.no> - 2023-05-22 21:58 +0200
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-22 13:21 -0700
      Re: deprecate backslash-newline (line continuation) ? scott@slp53.sl.home (Scott Lurndal) - 2023-05-22 20:15 +0000
  Re: deprecate backslash-newline (line continuation) ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2023-05-22 15:12 -0700
    Re: deprecate backslash-newline (line continuation) ? Kaz Kylheku <864-117-4973@kylheku.com> - 2023-05-23 06:57 +0000
      Re: deprecate backslash-newline (line continuation) ? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-05-23 00:13 -0700
  Re: deprecate backslash-newline (line continuation) ? Blue-Maned_Hawk <bluemanedhawk@gmail.com> - 2023-05-23 20:40 -0400
    Re: deprecate backslash-newline (line continuation) ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-05-24 02:05 +0100
      Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 19:07 -0700
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 19:09 -0700
          Re: deprecate backslash-newline (line continuation) ? Richard Damon <Richard@Damon-Family.org> - 2023-05-24 12:07 -0400
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 19:34 -0700
      Re: deprecate backslash-newline (line continuation) ? Blue-Maned_Hawk <bluemanedhawk@gmail.com> - 2023-05-23 22:32 -0400
        Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 19:44 -0700
    Re: deprecate backslash-newline (line continuation) ? Thiago Adams <thiago.adams@gmail.com> - 2023-05-23 19:08 -0700

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