Clarify main fetch recursive invocation

Spec on main fetch should clarify recursive invocation with the
discussion of a "recursive flag". Fixes #217.

PR: #218

Overview.html

@@ -7,7 +7,7 @@
 
 <p><a class="logo" href="https://whatwg.org/"><img alt="WHATWG" height="100" src="https://resources.whatwg.org/logo-fetch.svg" width="100"></a>
 <h1 id="cors">Fetch</h1>
-<h2 class="no-num no-toc" id="living-standard-—-last-updated-17-february-2016">Living Standard — Last Updated 17 February 2016</h2>
+<h2 class="no-num no-toc" id="living-standard-—-last-updated-18-february-2016">Living Standard — Last Updated 18 February 2016</h2>
 
 <dl>
  <dt>Participate:
@@ -1830,11 +1830,12 @@ <h2 id="fetching"><span class="secno">5 </span>Fetching</h2>
 
 <h3 id="main-fetch"><span class="secno">5.1 </span>Main fetch</h3>
 
-<p>To perform a <dfn id="concept-main-fetch" title="concept-main-fetch">main fetch</dfn> using
-<var>request</var>, optionally with a <i title="">CORS flag</i>, run these steps:
+<p>To perform a <dfn id="concept-main-fetch" title="concept-main-fetch">main fetch</dfn> using <var>request</var>, optionally
+with a <i title="">CORS flag</i> and <i title="">recursive flag</i>, run these steps:
 
-<p class="note no-backref">The <i title="">CORS flag</i> is a bookkeeping detail for handling
-redirects.
+<p class="note">The <i title="">recursive flag</i> is set when
+<a href="#concept-main-fetch" title="concept-main-fetch">main fetch</a> is invoked recursively. The
+<i title="">CORS flag</i> is a bookkeeping detail for handling redirects.
 
 <ol>
  <li><p>Let <var>response</var> be null.
@@ -1879,8 +1880,8 @@ <h3 id="main-fetch"><span class="secno">5.1 </span>Main fetch</h3>
  <!-- Per Mike West HSTS happens "probably after" Referrer -->
 
  <li><p>If <var>request</var>'s <a href="#synchronous-flag">synchronous flag</a> is unset and
- <a href="#concept-main-fetch" title="concept-main-fetch">main fetch</a> is not invoked recursively, run the
- remaining steps <a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel">in parallel</a>.
+ <i title="">recursive flag</i> is unset, run the remaining steps
+ <a class="external" data-anolis-spec="html" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel">in parallel</a>.
 
  <li>
   <p>If <var>response</var> is null, set <var>response</var> to the value
@@ -1955,8 +1956,7 @@ <h3 id="main-fetch"><span class="secno">5.1 </span>Main fetch</h3>
     <var>request</var> with the <i title="">CORS flag</i> set.
   </dl>
 
- <li><p>If <a href="#concept-main-fetch" title="concept-main-fetch">main fetch</a> is invoked recursively, return
- <var>response</var>.
+ <li><p>If the <i>recursive flag</i> is set, return <var>response</var>.
 
  <li>
   <p>If <var>response</var> is not a
@@ -2514,7 +2514,7 @@ <h3 id="http-redirect-fetch"><span class="secno">5.4 </span>HTTP-redirect fetch<
 
  <li>
   <p>Return the result of performing a <a href="#concept-main-fetch" title="concept-main-fetch">main fetch</a> using
-  <var>request</var>, with the <i>CORS flag</i> set if set.
+  <var>request</var>, with the <i>CORS flag</i> set if set, and the <i>recursive flag</i> set.
 
   <p class="note no-backref">This has to invoke <a href="#concept-main-fetch" title="concept-main-fetch">main fetch</a> to
   get <a href="#concept-request-response-tainting" title="concept-request-response-tainting">response tainting</a> correct.
@@ -4783,6 +4783,7 @@ <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
 Cameron McCormack,
 Clement Pellerin,
 Collin Jackson,
+Daniel Robertson,
 David Håsäther,
 David Orchard,
 Domenic Denicola,
@@ -4824,6 +4825,7 @@ <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
 Lucas Gonze,
 呂康豪 (Kang-Hao Lu),
 Maciej Stachowiak,
+Manish Goregaokar,
 Marc Silbey,
 Marcos Caceres,
 Mark Nottingham,

Overview.src.html

@@ -1768,11 +1768,12 @@ <h2>Fetching</h2>
 
 <h3>Main fetch</h3>
 
-<p>To perform a <dfn title=concept-main-fetch>main fetch</dfn> using
-<var>request</var>, optionally with a <i title>CORS flag</i>, run these steps:
+<p>To perform a <dfn title=concept-main-fetch>main fetch</dfn> using <var>request</var>, optionally
+with a <i title>CORS flag</i> and <i title>recursive flag</i>, run these steps:
 
-<p class="note no-backref">The <i title>CORS flag</i> is a bookkeeping detail for handling
-redirects.
+<p class="note">The <i title>recursive flag</i> is set when
+<span title="concept-main-fetch">main fetch</span> is invoked recursively. The
+<i title>CORS flag</i> is a bookkeeping detail for handling redirects.
 
 <ol>
  <li><p>Let <var>response</var> be null.
@@ -1817,8 +1818,8 @@ <h3>Main fetch</h3>
  <!-- Per Mike West HSTS happens "probably after" Referrer -->
 
  <li><p>If <var>request</var>'s <span>synchronous flag</span> is unset and
- <span title=concept-main-fetch>main fetch</span> is not invoked recursively, run the
- remaining steps <span data-anolis-spec=html>in parallel</span>.
+ <i title>recursive flag</i> is unset, run the remaining steps
+ <span data-anolis-spec=html>in parallel</span>.
 
  <li>
   <p>If <var>response</var> is null, set <var>response</var> to the value
@@ -1893,8 +1894,7 @@ <h3>Main fetch</h3>
     <var>request</var> with the <i title>CORS flag</i> set.
   </dl>
 
- <li><p>If <span title=concept-main-fetch>main fetch</span> is invoked recursively, return
- <var>response</var>.
+ <li><p>If the <i>recursive flag</i> is set, return <var>response</var>.
 
  <li>
   <p>If <var>response</var> is not a
@@ -2452,7 +2452,7 @@ <h3>HTTP-redirect fetch</h3>
 
  <li>
   <p>Return the result of performing a <span title=concept-main-fetch>main fetch</span> using
-  <var>request</var>, with the <i>CORS flag</i> set if set.
+  <var>request</var>, with the <i>CORS flag</i> set if set, and the <i>recursive flag</i> set.
 
   <p class="note no-backref">This has to invoke <span title=concept-main-fetch>main fetch</span> to
   get <span title=concept-request-response-tainting>response tainting</span> correct.
@@ -4640,6 +4640,7 @@ <h2 class=no-num>Acknowledgments</h2>
 Cameron McCormack,
 Clement Pellerin,
 Collin Jackson,
+Daniel Robertson,
 David H&aring;s&auml;ther,
 David Orchard,
 Domenic Denicola,
@@ -4681,6 +4682,7 @@ <h2 class=no-num>Acknowledgments</h2>
 Lucas Gonze,
 呂康豪 (Kang-Hao Lu),
 Maciej Stachowiak,
+Manish Goregaokar,
 Marc Silbey,
 Marcos Caceres,
 Mark Nottingham,