Breaking: #73794 - renderCharset option removed 

See forge#73794

Description 

The TypoScript option config.renderCharset which was used as character set for internal conversion within a frontend request has been removed, as internal conversions are always set to UTF-8 now. The property $TSFE->renderCharset is now always set to utf-8, and is not used within the TYPO3 Core anymore.

Please note that it is still possible to define the character set of the returned content via config.metaCharset.

Impact 

Using TYPO3 with a different datasource which is not UTF-8 (e.g. a database with latin1) might return unexpected results. Non-UTF-8 databases work as expected if the connection charset is still UTF-8, as the DBMS takes care of converting the data to UTF-8.

Affected Installations 

Any installation that uses the config.renderCharset TypoScript option with a different value than utf-8.

Migration 

Remove the TypoScript option from any TypoScript settings. If data sources (files, database input) are used that are different than UTF-8, a manual conversion via the CharsetConverter PHP class is needed.