in src/wit.rs [62:71]
fn glyph_path_string(&self, c: char) -> Option<String> {
use pathfinder_geometry::transform2d::Transform2F;
use pathfinder_geometry::vector::Vector2F;
let (_, mut outline) = self.outline(c)?;
let height = self.ascender() as f32 - self.descender() as f32;
outline.transform(&Transform2F::from_scale(Vector2F::new(1.0, -1.0)));
outline.transform(&Transform2F::from_translation(Vector2F::new(0.0, height)));
Some(format!("{:?}", outline))
}