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

Question

I have seen people recommend putting both of the following lines in one .inputrc to enable vi mappings of vi:

 set editing-mode vi set keymap vi 

Sometimes recommended separately ; sometimes recommended. G! Both are needed on any systems?

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As a greedy side, if any of them are included in one .inputrc , you still need to include:

 set -o vi 

... in one .bash_profile ?

Answer 1

Only the first line is required:

 set editing-mode vi 

The second line determines how future keyboard shortcuts will be applied manually:

 set keymap vi 

Answer 2

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

Second, set -o vi only controls bash. vimrc does not affect bash.