TYPO3 Core

What do you expect us to do? Improve the template or provide more meaningful settings?

You may also propose a patch: http://wiki.typo3.org/CWT

No feedback within the last 90 days => closing this ticket.

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Did some research on since when this inconsistency exists:

TYPO3 4.5¶

TypoScript:

plugin.tx_indexedsearch.show.rules = 1

code correctly uses $this->conf['show.']['rules']

since TYPO3 6.2¶

TypoScript:
ext_typoscript_setup.txt:

plugin.tx_indexedsearch.show.rules = 1

Configuration/TypoScript/setup.txt:

plugin.tx_indexedsearch.settings.displayRules = 1

Pi1 (classic search plugin):

code correctly uses $this->conf['show.']['rules']

Pi2 (experimental extbase variant):
Fluid uses wrong variable <f:if condition="{settings.showRules}>

looks like we need to treat a fix as breaking change.

Patch set 1 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/46002

Applied in changeset 01ffb0c45ae4894f74d25a39e96bdd7b0dc683da.

Patch set 1 for branch TYPO3_7-6 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/46010

Applied in changeset 5b8609ff6f6cd0fb5b150f468a484f02e3da51c3.