Improve code comments to save our efforts on re-evaluating the Browser supports. It helps to analysis Browser Hacks usages in CORE & Cleaning up in future releases.

This is how jQuery does also:
searching `// Support:`

For example,

the following patch I think OR condition is unnecessary but we don't have 100% confidence to remove it:

Another example:
@import hack in CORE is also outdated I think:

Proposed resolution

- (Inform our CORE developer with right channel)

Remaining tasks

- (Discuss: Not rush for current source and only used in new hacks?)


droplet created an issue. See original summary.

Version: 8.2.x-dev » 8.3.x-dev

Drupal 8.2.6 was released on February 1, 2017 and is the final full bugfix release for the Drupal 8.2.x series. Drupal 8.2.x will not receive any further development aside from critical and security fixes. Sites should prepare to update to 8.3.0 on April 5, 2017. (Drupal 8.3.0-alpha1 is available for testing.)

Bug reports should be targeted against the 8.3.x-dev branch from now on, and new development or disruptive changes should be targeted against the 8.4.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.