[TYPO3-german] localconf.php was set to 0 after trying to delete an extension or installing an extension

[Andreas Becker]

Hi

It seems that in 4.5.2 a localconf.php gets set to 0 - complete empty, when
you are deleting or installing an extension from extension manager and the
permissions of typo3conf are wrong. We were able to recreate this issue if
the permissions are i.e. user:root and 777 if they are user:user. The agency
who called us had a site were the localconf had no content at all and the
install tool was called after inserting ENABLE_INSTALL_TOOL.

It seems that typo3 is deleting the complete file and replacing it with a 0
file without making a copy of localconf.php.

IMHO it would actuially be good to have some routine which always produces
at least one copy of the localconf.php if a value in localconf.php gets
changed. This would help to switch back much easier.

Does someone else has experrienced also this behaviour?

Andi