quĭ in comedy

Latin Learning Latin
1

What is the second quĭ in this sentence and why is it short?

qui potui melius quĭ hodie usque os praebui? (Ter. Ad. 215)

I understand that the first qui is a kind of ablative giving the general sence of ‘how’ or ‘in what way’ but the second one has stumped me.

2

It’s just the relative pronoun (masc.nom.sing.). Lit. “How could I better, (I) who today even offered my face?”
The shortening before a vowel (“correption”) is regular in Roman comedy, and “h” is metrically null.