<div dir="auto">It’s a bit odd: if you assume the default is ascii then you don’t need this. If you assume the default is utf8 then you don’t need this... so when do you need the BOM? It seems like making bad prior choices more acceptable... even though they were bad choices. I’m not sure it’s a good idea. </div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Oct 11, 2020 at 8:22 PM Tom Honermann via SG16 <<a href="mailto:sg16@lists.isocpp.org">sg16@lists.isocpp.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">
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<div>On 10/10/20 7:58 PM, Alisdair Meredith
via SG16 wrote:<br>
</div>
<blockquote type="cite">
One concern I have, that might lead into rationale for the current
discouragement,
<div>is that I would hate to see a best practice that
pushes a BOM into ASCII files.</div>
<div>One of the nice properties of UTF-8 is that a valid
ASCII file (still very common) is</div>
<div>also a valid UTF-8 file. Changing best practice
would encourage updating those</div>
<div>files to be no longer ASCII.</div>
</blockquote>
<p>Thanks, Alisdair. I think that concern is implicitly addressed
by the suggested resolutions, but perhaps that can be made more
clear. One possibility would be to modify the "protocol designer"
guidelines to address the case where a protocol's default encoding
is ASCII based and to specify that a BOM is only required for
UTF-8 text that contains non-ASCII characters. Would that be
helpful?</p></div><div><p><br>
</p>
<p>Tom.<br>
</p>
<blockquote type="cite">
<div><br>
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<div>AlisdairM<br>
<div><br>
<blockquote type="cite">
<div>On Oct 10, 2020, at 14:54, Tom Honermann via
SG16 <<a href="mailto:sg16@lists.isocpp.org" target="_blank">sg16@lists.isocpp.org</a>>
wrote:</div>
<br>
<div>
<div>
<p>Attached is a draft proposal for the Unicode
standard that intends to clarify the current
recommendation regarding use of a BOM in UTF-8 text.
This is follow up to <a href="https://corp.unicode.org/pipermail/unicode/2020-June/008713.html" target="_blank">discussion on the Unicode mailing list</a>
back in June.</p>
<p>Feedback is welcome. I plan to <a href="https://www.unicode.org/pending/docsubmit.html" target="_blank">submit</a> this to the UTC in a week or so
pending review feedback.<br>
</p>
<p>Tom.<br>
</p>
</div>
<span id="m_3223124279792112309cid:958C9297-66AC-4D88-8F0B-577B8BA2589E@nyc.rr.com"><Unicode-BOM-guidance.pdf></span>--
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</blockquote>
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