fix a number parsing/formatting bug

Author: kaikalii

parser/src/parse.rs

@@ -1425,8 +1425,8 @@ impl Parser<'_> {
  Ok(n) => n.to_string(),
  Err(_) => s.into(),
  };
- if s.contains('`') {
- s = s.replace('`', "¯");
+ if s.contains(['`', '-']) {
+ s = s.replace(['`', '-'], "¯");
  }
  (r, s, Some(span))
  } else if let Some(((n, s), span)) = self.infinity().map(Into::into) {

src/format.rs

@@ -2044,12 +2044,14 @@ F,1
 \\\\25cb
 ⊗
 ˜⊗
+`5
 ";
  let output = "\
 F₁
 ○
 ˜⨂
 ⨂
+¯5
 ";
  let formatted = format_str(input, &FormatConfig::default()).unwrap().output;
  assert_eq!(formatted, output);