Thackish

Proto-Mallorcan Arabic is the variety of vernacular Arabic that eventually became Mallorcan Arabic, specifically the stage before it started absorbing Irish influence.

(does van Putten's book have any leads on Neo-Arabic?)

Ultrashort yers? ŭ ĭ, with latter only allowed after nonemphatics

Phonological history of vowels

Final vowels

-ah, -ā, -ē, -ā2 > -ə

Syntax

Proto-Majorcan Arabic had the emphatic "ADJ el-NOUN" construction (from earlier "STATIVE_VERB al-NOUN"), which got reinterpreted as 'an ADJ NOUN' under Irish influence: "In Classical Arabic syncopated forms do not usually occur, the only place where they occur is when the verbs naʕima ‘he is glad’ and baʔisa ‘he is miserable’ are employed as pseudo-verbs of emphatic qualification, such as niʕma r-raǧulu ‘what a wonderful man!’ and biʔsa n-nisāʔu ‘what evil women!’ (Fischer 2002, §259–263)." (van Putten)