Thackish

Proto-Majorcan Arabic is the variety of vernacular Arabic that eventually became Majorcan, 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

a i u ā ē ī ū

Final vowels

-ah, -ā, -ē, -ā2 > -ə

Phonological history of consonants

Emphasis spread

an emphatic consonant spreads rightward and to the first vowel leftward, but stress blocks it, as well as inherently non-emphatic consonants (š y g?) to the right

Morphology

Hollow root ʔimālah depends on whether it's 2-y or 2-w:

• *zēd 'he increased', *māt 'he died'

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)