Are these two vi-related `.inputrc` lines redundant?

bash vi

The file /etc/inputrc or ~/.inputrc controls the library readline. Readline is used by many many programs (including bash).

The second one, set -o vi controls only bash. vimrc has no effect on bash.

bash vi

Only the first line is necessary:

set editing-mode vi

The second line defines how future manual key mappings will be applied:

set keymap vi

CodeHunter