As demonstrated bellow brace expansion: character sequence does work in zsh similarly to bash
$ /usr/local/bin/zsh --version; /usr/local/bin/zsh -c 'echo {a..z}'
zsh 5.9 (x86_64-apple-darwin21.3.0)
a b c d e f g h i j k l m n o p q r s t u v w x y z
I created a pull request:
#128