Save input history per mode

[sayanarijit]

Use up/down arrow keys to navigate input history where applicable.

Any mode can have enable_input_history = true to enable input history.

Messages:

• PreviousInput (up)
• NextInput (down)
• ReverseSearchInput (ctrl-r)

[Narayanbhat166]

Hi @sayanarijit. I would like to work on this issue. Can you please provide more information on this?

[sayanarijit]

Hi, thanks for showing interest, however, I created this issue mainly to remind myself to brainstorm an implementation that would enable modal input history based operations in the input buffer (like bash/zsh). I don't yet know what will work and how, so can't provide an in-depth action plan as yet.

But if you'd like, you can browse through the codebase, understand how things work, and suggest ideas on how to tackle this. Feel free to ask for clarification.

[sayanarijit]

There's also this one a bit easier: #643