Bach BWV 817: how do you realize this ornament, bars 10, 18 [duplicate]

Question

How do you realize this ornament with the big tailhook at the end? The editorial contains a cheat sheet but not this particular ornament.

Bach BWV 817 Sarabande (Henle): bars 10, 18

Answer 1

This ornament is to be played by filling up the interval, so an alternative notation would be

Answer 2

The way I've most often heard this performed is as a rolled chord in which some of the "in between" notes are included along the way. So, for example, the chord in measure 10 might be performed something like:

The rhythms are not intended to be accurate — just an illustration of the order in which the notes might be executed.

This interpretation is backed up by the fingering in measure 18, which suggests that the C# be played with the thumb, the E with finger 2, and then a run of 2-3-4 up to the G#.

Glenn Gould performs measure 18 in this way, although in measure 10 he puts the "run" at the beginning (i.e., bottom) of the chord.