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Subject: Re: Wording for P2295 based on P2314
From: Corentin (corentin.jabot_at_[hidden])
Date: 2021-06-23 07:18:56


Do you want a note saying that an implementation strategy is to provide a
command line flag?

On Wed, Jun 23, 2021 at 10:33 AM Corentin <corentin.jabot_at_[hidden]> wrote:

> The compiler makes a determination.
> Maybe there is a command flag, maybe it reads the tea leaves, maybe
> there is a configuration.
> There is no mandate that it be a flag even if we hope it is.
>
> Whatever the determination is, it does not involved reading the file ( or,
> given multiple way to make a determination, at least one does not involve
> reading the file)
>
> Because an encoding has no content and a file is definitively never
> independent of its content, I think it would take a herculean effort to
> genuinely misconstrue
> this sentence.
>
> Now, do we believe this wording is good enough that this paper can
> progress to evolution?
>
>
> On Tue, Jun 22, 2021 at 11:58 PM Jens Maurer <Jens.Maurer_at_[hidden]> wrote:
>
>> On 22/06/2021 23.54, Charlie Barto via SG16 wrote:
>> >> The encoding scheme of a physical source file is determined in an
>> implementation-
>> >> defined manner. An implementation shall provide a mechanism to
>> determine the
>> >> encoding of a source file that is independent of its content.
>> >
>> > How does this work if the file is stored in an encoding where, for
>> example, all the characters in the basic source character set had
>> multi-byte representations, or were otherwise different from the "usual"
>> values? Would this be in the form of a new preprocessor mechanism that
>> asked the encoding of some other source file?
>>
>> "determine" wants to say "expressly specified by the user" (e.g. by
>> command-line flag), but we don't have words to say that in the
>> standard (because the standard has never heard about a command line).
>>
>> But I agree, we should find a better phrasing than "determine".
>> Maybe "assert"?
>>
>> Oh, and the quoted text also needs to fix the ambiguous antecedent
>> for "that is independent": As it stands, it refers to the source
>> file or the encoding, but we want it to apply to "mechanism".
>>
>> Jens
>>
>



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