TYPO3 Core

When submitting indexed search with only one character, a logic exception is thrown:

"You need to add at least one set of values before generating the SQL."

The Exception is caused by passing an empty array to QueryBuilder in

TYPO3\CMS\IndexedSearch\Controller\SearchController::writeSearchStat (line 876-881)

This method has an early return (line 862), however, in order to return early, the exit condition requires both the array passed in to be empty (which is the case when searching for one character since minimum length is 2 chars) and the property $sword to be empty, which is not the case when entering a single char.