Deprecation: #63974 - Deprecate CSS compressor callback method¶
See Issue #63974
The callback method
compressCssPregCallback() as defined in
EXT:core/Classes/Resource/ResourceCompressor.php has been marked as deprecated due to the overhauled regular expressions.
Usage of the mentioned method is discouraged and will break as of CMS 8.
All installations or extensions using the
compressCssPregCallback() callback method.
No migration possible for the callback method.