Mention that some settings can't be configured via the BE and not be found in Global Configuration settings and in $GLOBALS['TYPO3_CONF_VARS'] etc.

[sypets]

Update Oct 10 / 2022 - modfied description some more.

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Specifically, the setting fileDenyPattern can not be found in:

• typo3/sysext/core/Configuration/DefaultConfiguration.php
• typo3/sysext/core/Configuration/DefaultConfigurationDescription.yaml
• Global Configuration Settings in BE ( "Configure Installation-Wide Options"), which also means you can't change it via the BE
• LocalConfiguration.php
• BE: Configuration | TYPO3_CONF_VARS

If this setting does not exist, the default is just used, so this seems to be correct and desired behaviour. But this can make it confusing, because the setting does exist, is documented, but you can't see it where you expect it.

Also $GLOBALS['TYPO3_CONF_VARS']['SYS']['FileInfo']['fileExtensionToMimeType'] which is already handled in #3772

Suggestion

For now, it might be helpful to just add a note about that in the documentation: https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Configuration/Typo3ConfVars/BE.html#filedenypattern

further remarks

• in any case, since it is now a regex and this could easily be messed up, it is probably a good decision to not offer it in the Configuration dialog IMHO

Changelog

• https://docs.typo3.org/c/typo3/cms-core/main/en-us/Changelog/10.4/Deprecation-90147-UnifiedFileNameValidator.html
• see discussion about it no longer being able to edit it: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62843/10/typo3/sysext/core/Configuration/DefaultConfiguration.php
• patch: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62843/