whatwg

From time to time i see ppl using data instead of body which is wrong.
happened just recently in node-fetch/node-fetch#481 (comment)

how do you feel about adding a little warning message that can only appear once. (kinda like node reports that you are using experimental apis)

if ('data' in bodyInit && notWarned) {
  console.warn('use body i

https://html.spec.whatwg.org/multipage/media.html#dom-texttracklist-item

The line of code addFX(13.612, 15.091, 'kitten mew')) should rather be addFX(13.612, 15.091, 'kitten mew');

Relevant spec sections:

https://drafts.csswg.org/selectors-4/#the-dir-pseudo
https://html.spec.whatwg.org/multipage/semantics-other.html#selector-ltr

The interesting cases to test are from the definition of "directionality" in HTML:
https://html.spec.whatwg.org/multipage/dom.html#the-directionality

• element with dir="ltr" matches :dir(ltr) (#26159)
• root element without `

Presumably these should result in a network error. The current specification doesn't state anything and it's not tested either.

See the README for instructions on where to add tests. In the specification the "blob" case of https://fetch.spec.whatwg.org/#scheme-fetch needs updating to handle current URL’s blob URL entry being null.

Under point 6 of the list of steps to take to "ensure pre-insertion validity", as part of an attempt to implement a procedure involving the particular list of steps, I am having trouble unambiguously interpreting the following statement:

parent has an element child, child is a doctype, or child is non-null and a do

The term "forbidden host code point" is used exactly twice within this spec, and in one case it excludes U+0025 (%):

If asciiDomain contains a forbidden host code point, validation error, return failure.

If input contains a forbidden host code point excluding U+0025 (%), validation error, return failure.

I think it is easier for implementations to add to a definition rather than take

This doesn't make any sense to me: "The behavior when a string value that is not one a valid enumeration value is used when assigning to an attribute, or passed as an operation argument, whose type is the enumeration, is language binding specific."

I believe the word "one" should not have been there.

In https://infra.spec.whatwg.org/#code-points you suggest.

...Documents using the Infra Standard are encouraged to follow code points by their name...

but you fail to do so, when in https://infra.spec.whatwg.org/#strings you write

To convert a string into a scalar value string, replace any surrogates with U+FFFD.

It should be

To convert a string into a scalar value string, repla

In https://mimesniff.spec.whatwg.org/#parsing-a-mime-type the following step might be clearer if it explicitly said the trailing sequence after " was to be discarded. Might also be better if the example contains a ';' since the step mentions ';'

Current:

Collect a sequence of code points that are not U+003B (;) from input, given position.
Example: Given text/html;charset="shift_jis"iso-20

https://github.com/whatwg/whatwg.org/blob/master/resources.whatwg.org/standard.css#L168

A <dl class="switch"> in specs represents a switch statement in programming languages. For stylistic reasons we use an arrow character as generated content before each dt.

Example: https://dom.spec.whatwg.org/#dom-node-nodetype

This renders as "rightwards arrow with hook" in screen readers, accor