Re: [whatwg/fetch] Be clearer about the underlying source of a constructed ReadableStream. (#781)

domfarolino commented on this pull request.



>  
- <li><p>Set <var>init</var>["cancel"] to a function that runs <var>cancel</var> if
- <var>cancel</var> is given.
+ <dl class=switch>
+ <dt>If <var>pull</var> is given
+ <dd>the result of [=promise-calling=] <var>pull</var>().

Very out-of-context question: What is the reasoning for objection to using the promises guide? Haven't read all of it, just curious (sorry this is not the best place).

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