PAL

Ptolemaeus Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.
%% (two percent signs) is the placeholder for no, one or more than one character, but not for blank space (so that a search ends at word boundaries).

At the beginning and at the end, these placeholders are superfluous.

al-Battānī, Sharḥ Kitāb al-Arbaʿ maqālāt fī aḥkām ʿilm al-nujūm

Escorial, RBMSL, ár. 969 · 20r

كتاب الأربع مقالات في أحكام على النجوم سیّد الحکماء بطلميوس

شرح أبي عبد الله محمّد بن جابر أبو sic سنان الحرّانيّ

المعروف بالبتّانيّ