> .inputrc should be universal Absolutely not. Using readline means completion and keybinding customization would be limited to what bash can do, or even worse

> .inputrc should be universal Absolutely not. Using readline means completion and keybinding customization would be limited to what bash can do, or even worse as is typical with other readline based REPLs. What you're asking for is to gut a definitive feature of zsh only so that it can be bash. That provides zero value to zsh users.