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ISO 639-1: none 
ISO 639-2: kaa 
ISO/FDIS 639-3: kaa  

Native name: Qaraqalpaqsha 
(in Cyrrllyc script before 1992 - Қарақалпақша)

Family: Turkic (Noghay-Qypchaq brunch)

Official stat: in Autonomous Republic of Karakalpakstan (Uzbekistan)

Script: Latin 
(from 1992 English alphabet and '`' U+0060 GRAVE ACCENT for that most preferred typographic symbol 'ʻ' 
U+02BB MODIFIER LETTER TURNED COMMA like 'Gʻgʻ' 'Oʻoʻ' etc)

Speakers: ~500,000

Areal: nearest to Aral Sea, Uzbekistan

Wikipedia article: [[en:Karakalpak language]]

So item in Names.php should be

...

'kaa' => 'Qaraqalpaqsha',		# Karakalpak

...

$linkTrail = '/^([a-zʻ`]+)(.*)$/sD';