Hi Ralph, On Thu, 18 Jan 2024 at 15:56, Ralph Goers <ralph.go...@dslextreme.com> wrote: > Spring uses PropertiesUtil. I suspect it isn’t alone. That would mean > anything impacted by the property changes would have to be in the spi or > abstracted to reference something in the spi. I am assuming a log4j-spi-2.x > would also be needed. There are many other utility classes that have never > been off limits for users to use. > > While your idea could work it definitely would impact some users.
Spring Boot contributors were probably aware that `PropertiesUtil` is not part of the public API. ;-) Besides we already broke their code, when 2.7 introduced breaking changes to ConfigurationFactory. I am more afraid about users calling `LogManager#getContext` and other magical snippets of code that I don't consider being part of the public API (that method should have probably been protected from the start). In 2022 we saw a lot of questions about users looking to replace `PropertyConfigurator` from 1.x. Unless I am mistaken, calling `PropertyConfigurator` was not required since Log4j 1.0. Piotr
