I checked the book's TOC and was surprised to see that lexical scoping was introduced in the last chapter. https://github.com/alphapapa/emacs-package-dev-handb

I checked the book's TOC and was surprised to see that lexical scoping was introduced in the last chapter. https://github.com/alphapapa/emacs-package-dev-handbook#lexical-binding-1 https://github.com/alphapapa/emacs-package-dev-handbook#lexi... says using lexical scoping is a best practice.