Bug 169747 – _blank / _self / _parent / _top browsing context names should be case-insensitive

• Status: RESOLVED
• Resolution: FIXED
• Component: DOM

[Lyza Gardner]

Per section 7.1.5 Named Browsing Contexts[1] of the WHATWG HTML specification:

> A valid browsing context name or keyword is any string that is either a valid browsing context name or that is an ASCII case-insensitive match for one of: _blank, _self, _parent, or _top.

However, the behavior observed is that case-mixed variants of `_blank` are treated as non-keyword browsing context names. To reproduce, e.g.:

1. `window.open` into `_bLAnk`
2. `window.open` into `_bLAnk`

Expected result:

Browser should create two new browsing contexts, treating `_bLAnk` as a case-insensitive match for the keyword `_blank`.

Actual result:

Browser only creates one new browsing context. The second invocation of `window.open` reuses the `_bLAnk` browsing context created by the first invocation.

Relevant web-platform-tests: https://github.com/w3c/web-platform-tests/pull/5145

[1] https://html.spec.whatwg.org/#browsing-context-names

[PhistucK]

Filed an HTML issue, so this might not be a bug -
https://github.com/whatwg/html/issues/2443

[Simon Pieters (:zcorpan)]

Concluded in https://github.com/whatwg/html/issues/2443#issuecomment-289043039 that case-insensitive is better.

[Chris Dumez]

Created attachment 306240 [details]
Patch

[Chris Dumez]

*** Bug 169748 has been marked as a duplicate of this bug. ***

[Chris Dumez]

*** Bug 170128 has been marked as a duplicate of this bug. ***

[WebKit Commit Bot]

Comment on attachment 306240 [details]
Patch

Clearing flags on attachment: 306240

Committed r214944: <http://trac.webkit.org/changeset/214944>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.