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Clarify IPv6 serializer #268

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Mar 15, 2017
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Clarify IPv6 serializer #268

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28 changes: 18 additions & 10 deletions url.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ No Editor: true
Abstract: The URL Standard defines URLs, domains, IP addresses, the <code title>application/x-www-form-urlencoded</code> format, and their API.
Logo: https://resources.whatwg.org/logo-url.svg
Boilerplate: omit feedback-header, omit conformance
!Participate: <a href=https://github.com/whatwg/url>GitHub whatwg/url</a> (<a href=https://github.com/whatwg/url/issues/new>new issue</a>, <a href="https://github.com/whatwg/url/issues">open issues</a>, <a href="https://www.w3.org/Bugs/Public/buglist.cgi?product=WHATWG&amp;component=URL&amp;resolution=---">legacy open bugs</a>)
!Participate: <a href=https://github.com/whatwg/url>GitHub whatwg/url</a> (<a href=https://github.com/whatwg/url/issues/new>new issue</a>, <a href="https://github.com/whatwg/url/issues">open issues</a>)
!Participate: <a href="https://wiki.whatwg.org/wiki/IRC">IRC: #whatwg on Freenode</a>
!Commits: <a href="https://github.com/whatwg/url/commits">https://github.com/whatwg/url/commits</a>
!Commits: [SNAPSHOT-LINK]
Expand Down Expand Up @@ -813,20 +813,28 @@ The <dfn id=concept-ipv4-serializer>IPv4 serializer</dfn> takes an
<a lt='IPv6 piece'>16-bit pieces</a> that are 0 longer than
one, set <var>compress pointer</var> to null.

<li><p>Let <var>ignore0</var> be false.

<li>
<p>For each <var>piece</var> in <var>address</var>'s
<a lt='IPv6 piece'>pieces</a>, run these substeps:

<ol>
<li><p>If <var>compress pointer</var> points to
<var>piece</var>, append "<code>::</code>" to
<var>output</var> if <var>piece</var> is
<var>address</var>'s first <a lt='IPv6 piece'>piece</a> and append
"<code>:</code>" otherwise, and then run these substeps again with all
subsequent <a lt='IPv6 piece'>pieces</a> in
<var>address</var>'s <a lt='IPv6 piece'>pieces</a>
that are 0 skipped or go the next step in the overall set of steps if
that leaves no <a lt='IPv6 piece'>pieces</a>.
<li><p>If <var>ignore0</var> is true and <var>piece</var> is 0, then <a>continue</a>.

<li><p>Otherwise, if <var>ignore0</var> is true, set <var>ignore0</var> to false.

<li>
<p>If <var>compress pointer</var> points to <var>piece</var>, then:

<ol>
<li><p>Let <var>separator</var> be "<code>::</code>" if <var>piece</var> is
<var>address</var>'s first <a lt='IPv6 piece'>piece</a>, and "<code>:</code>" otherwise.

<li><p>Append <var>separator</var> to <var>output</var>.

<li><p>Set <var>ignore0</var> to true and <a>continue</a>.
</ol>

<li><p>Append <var>piece</var>, represented as the shortest
possible lowercase hexadecimal number, to <var>output</var>.
Expand Down