I don't think the bug is actually in filter.module itself. It's buried somewhere in the rendering process.

Steps to reproduce.
1) Call check_markup for a particular format (such as basic_html) with a null for $filter_types_to_skip
2) Examine the returned object and notice that the filters selected for that form have been applied
3) Change the call to now pass something in $filter_types_to_skip (such as array('filter_autop'))
4) Examine the returned object and notice that NONE of the filters selected for that format have been applied.

To look at it with code:
check_markup($text, $formatId, $langcode); applies all the filters for the format
check_markup($text, $formatId, $langcode, array('filter_autop')); doesn't apply any of the filters
check_markup($text, $formatId, $langcode, array('')); doesn't apply any of the filters

Comments

vegantriathlete created an issue. See original summary.

vegantriathlete’s picture

Issue summary: View changes
vegantriathlete’s picture

Issue summary: View changes

Version: 8.3.x-dev » 8.4.x-dev

Drupal 8.3.6 was released on August 2, 2017 and is the final full bugfix release for the Drupal 8.3.x series. Drupal 8.3.x will not receive any further development aside from critical and security fixes. Sites should prepare to update to 8.4.0 on October 4, 2017. (Drupal 8.4.0-alpha1 is available for testing.)

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Version: 8.4.x-dev » 8.5.x-dev

Drupal 8.4.4 was released on January 3, 2018 and is the final full bugfix release for the Drupal 8.4.x series. Drupal 8.4.x will not receive any further development aside from critical and security fixes. Sites should prepare to update to 8.5.0 on March 7, 2018. (Drupal 8.5.0-alpha1 is available for testing.)

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Version: 8.8.x-dev » 8.9.x-dev

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Bug reports should be targeted against the 8.9.x-dev branch from now on, and new development or disruptive changes should be targeted against the 9.1.x-dev branch. For more information see the Drupal 8 and 9 minor version schedule and the Allowed changes during the Drupal 8 and 9 release cycles.

Version: 8.9.x-dev » 9.2.x-dev

Drupal 8 is end-of-life as of November 17, 2021. There will not be further changes made to Drupal 8. Bugfixes are now made to the 9.3.x and higher branches only. For more information see the Drupal core minor version schedule and the Allowed changes during the Drupal core release cycle.

Version: 9.2.x-dev » 9.3.x-dev
quietone’s picture

Status: Active » Closed (cannot reproduce)
Issue tags: +Bug Smash Initiative

I played with this on 9.4.x, using FilterAPITest, and was not able to reproduce this problem with the filters.

Therefore, closing as cannot reproduce. If you are experiencing this problem on a supported version of Drupal reopen the issue, by setting the status to 'Active', and provide complete steps to reproduce the issue (starting from "Install Drupal core").

Thanks!