The readline word-boundary cache used for cursor and word navigation (getWordBoundaries) no longer tracks whether a segment is word-like versus punctuation, only its start/end offsets. This simplifies the previous Intl.Segmenter-based boundary logic.
Word-boundary tracking drops isWordLike distinction
Word-boundary navigation logic was simplified, dropping a word-vs-punctuation distinction.
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.261,
Internal ChangesSection of the release