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Re: Adjacent string literals

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On 1/26/21 7:22 AM, Ben Bacarisse wrote:
> James Kuyper <jameskuyper@alumni.caltech.edu> writes:
> 
>> I learned a couple of decades ago that adjacent string literals get
>> concatenated into a single longer literal, even if separated by
>> arbitrarily large amounts of white-space.
>>
>> Yesterday I happened to notice that translation phase 6 says only that
>> "Adjacent string literal tokens are concatenated.", without saying
>> anything about white-space. White-space doesn't lose it's significance
>> until translation phase 7. Therefore, string literals that are separated
>> by white-space do not qualify as adjacent. There's also no mention of
>> white-space in the fuller discussion that occurs in 6.4.5p5.
>>
>> Am I missing something obvious here? I can imagine someone telling me
>> that "adjacent" should be understood as "adjacent, ignoring white-space"
>> - but that doesn't seem obvious to me.
> 
> Surely it just means "next to", and in the sequence of tokens "a" "b"
> the two are next to each other.  It happens that string literal tokens
> are such that they can be adjacent without having any white-space
> between then, but I suspect that's making you over-think the meaning.
> Would you say that 'long int x' has no tokens adjacent to any others?

No, I would not - and that's precisely because "long int x" is not
parsed as a declaration until translation phase 7, and the very first
sentence of the description of that phase says "White-space characters
separating tokens are no longer significant.". Phase 6 occurs before
that sentence applies, which is precisely my point.

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Thread

Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-25 10:15 -0500
  Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-26 12:22 +0000
    Re: Adjacent string literals Jakob Bohm <jb-usenet@wisemo.com.invalid> - 2021-01-26 13:48 +0100
      Re: Adjacent string literals Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-26 13:05 -0800
      Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-26 21:40 +0000
        Re: Adjacent string literals Jakob Bohm <jb-usenet@wisemo.com.invalid> - 2021-01-28 09:53 +0100
          Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 05:45 -0500
    Re: Adjacent string literals Richard Damon <Richard@Damon-Family.org> - 2021-01-26 07:52 -0500
    Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-26 09:29 -0500
      Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-26 21:46 +0000
        Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-26 18:28 -0500
          Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-27 01:16 +0000
            Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-26 22:48 -0500
              Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-27 15:46 +0000
                Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-27 11:20 -0500
                Re: Adjacent string literals Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-28 03:05 +0000
  Re: Adjacent string literals Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-07-10 08:49 -0700
    Re: Adjacent string literals Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-07-10 14:58 -0700
      Re: Adjacent string literals Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-07-22 10:29 -0700
    Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-07-11 11:41 -0700
      Re: Adjacent string literals Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-07-22 15:26 -0700
        Re: Adjacent string literals James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-07-22 17:29 -0700
          Re: Adjacent string literals Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-01-17 05:29 -0800

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