What probably matters to youSection of the release
What
The description for the prompt's word-editing key setting now spells out what Alt+F, Alt+D and Ctrl+Y do in readline mode, where a word is letters and digits only, versus the default classic mode, which uses Unicode word segmentation so foo_bar and 3.14 each count as one word.
Details
Classic remains the default.
New Unicode character-class patterns were added alongside for default-ignorable characters, emoji, Han, Indic and Arabic scripts, and line separators.
Evidence
the word keys use Unicode word segmentation, so foo_bar and 3.14 are one word
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
