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Update HeaderId to clarify the difference between Autosubmitted and Auto-Submitted #1083

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merged 3 commits into from
Oct 2, 2024

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@rklec rklec commented Oct 2, 2024

This was totally confusing for me why there are two header IDs in MimeKit with the quite very same header. I even suspected a bug or that it is just a legacy API-compatibility thing (one being deprecated, though not stated?).

After some research it turns out, the header is actually defined. At least for the modern RFC3834 header the keywords are actually also defined by IANA: https://www.iana.org/assignments/auto-submitted-keywords/auto-submitted-keywords.xml (But you don't do mapping to an enum, so introducing this would change the API drastically and be a different/bigger task, so I thought for the code this may not be relevant.)

So to clarify this and ease searching around the web and decrease potential confusion for other developers, IMHO, it is a good idea to just directly point out the basic difference in the (code) doc, directly where you are using it.

For background, I am at #938 (comment) here detecting auto-reply mails for which this header is very important.

…uto-Submitted

This was totally confusing for me why there are two header IDs in MimeKit with the quite very same header. I even suspected a bug or that it is just a legacy API-compatibility thing (one being deprecated, though not stated?).

After some research it turns out, the header is actually defined.
At least for the modern RFC3834 header the keywords are actually also defined by IANA: https://www.iana.org/assignments/auto-submitted-keywords/auto-submitted-keywords.xml (But you don't do mapping to an enum, so introducing this would change the API drastically and be a different/bigger task, so I thought for the code this may not be relevant.)

So to clarify this and ease searching around the web and decrease potential confusion for other developers, IMHO, it is a good idea to just directly point out the basic difference in the (code) doc, directly where you are using it.

For background, I am at jstedfast#938 (comment) here detecting auto-reply mails for which this header is very important.
MimeKit/HeaderId.cs Outdated Show resolved Hide resolved
Improved wording
@jstedfast jstedfast merged commit 621db3a into jstedfast:master Oct 2, 2024
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@rklec rklec deleted the patch-2 branch October 2, 2024 15:20
AutoSubmitted,

/// <summary>
/// The Autosubmitted header field.
/// </summary>
/// <remarks>
/// <note type="warning">
/// <para>This is a legacy header as defined in <see href="https://datatracker.ietf.org/doc/html/rfc2156"/>RFC2156</see>.</para>
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@rklec rklec Oct 2, 2024

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-	/// <para>This is a legacy header as defined in <see href="https://datatracker.ietf.org/doc/html/rfc2156"/>RFC2156</see>.</para>
+	/// <para>This is a legacy header as defined in <see href="https://datatracker.ietf.org/doc/html/rfc2156">RFC2156</see>.</para>

You've got a typo there @jstedfast (introduced by my bad, sorry)

As GitHUb Actions points out.

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Thanks

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