Latin scrĭptus in the Senatus Consultum de Bacchanalibus (CIL 1².581)

The Senatus Consultum de Bacchanalibus of 186 BC has three instances of scriptus, the past participle of scrībō ‘I write’. In Classical Latin, this has a long vowel in the first syllable: scrīptus. However, the expected form is scrĭptus with a short vowel, and the long vowel is normally explained as analogical. The spelling rules of the SC de Bacchanalibus mean that the vowel must still have been short at the time it was written.