On Wed, 22 Apr 2020 at 19:24, Yuan Fu wrote: > Thanks, actually I was referring to the triangle icon in the customize > buffer: > > > You got it nice; it’s actually the right size, just jagged. For me on GTK+/GNU/Linux, it’s rendered at half size. I wonder if it’s even worthwhile having a bitmap for this. These days, it could as well be any of ▶/▼, ▷/▽, ▸/▾, or ▹/▿. It would even work on some text terminals.