Oh weird, even with `flush: true`, `content_for` will ignore an empty
block and *not* flush out the previous content. This could cause rows
whose subtitles *should* have been empty (e.g. no NC trade value) to
display the previous row's value instead.
Let's make this whole situation a bit more robust by having the
*template* clear out the subtitle right before calling the block. That
way, a previous row's value *can't* get in, no matter what.
Emi Matchu
be525d1d67