y, font, Html::lit(show.text),
mins_pad, HtmlStr::from_html_str(&mins), Html::lit(show.sigil)
)?;
+ // We write this separately because, empirically, not all the
+ // sigil characters have the same width, even in a mono font.
hwrite!(f, r##"
<{} x="14" y="{}" {} fill="{}" >{:02}</text>"##,
HTML_TEXT_LABEL_ELEM_START,