@@ -708,9 +708,8 @@ const splitAlternatives = (body) => {
 };
 
 /**
- * The part of a group body the match spells: the body itself for a capturing
- * group, what follows the `?:` or `?<name>` prefix for the others, and nothing
- * for a lookaround, which says what surrounds the match rather than spelling it.
+ * The part of a group body that the match spells — past a `?:` or `?<name>`
+ * prefix, and nothing at all for a lookaround, which spells nothing.
  * @param {string} body group body without the enclosing parentheses
  * @returns {string | undefined} the spelled part, or `undefined` for a lookaround
  */