Feature Request: Minimal Line Editor Commands

What feature would you like to see?

I’d like to propose adding a minimal set of line editor commands to the codec CLI, similar to what Claude Code provides. I realize that some of these, but not all of them, are implemented already.

In my view, a basic but usable editing experience should include movement, deletion, undo, and a handful of history and yank commands. Below is the minimal set I’d suggest (though this is open to debate).

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Movement

• C-b → move back one character
• C-f → move forward one character
• M-b → move back one word
• M-f → move forward one word
• C-a → move to beginning of line
• C-e → move to end of line

Killing / Deleting

• C-d → delete character under cursor
• DEL → delete character before cursor
• M-d → kill word forward
• M-DEL → kill word backward
• C-k → kill to end of line
• C-u → kill to beginning of line

Yanking

• C-y → yank (paste last killed text)
• M-y → cycle kill ring (after C-y)

History

• C-p → previous command
• C-n → next command
• C-r → reverse incremental search
• C-s → forward incremental search

Editing / Misc

• C-t → transpose characters
• M-t → transpose words
• M-u → uppercase word
• M-l → lowercase word
• M-c → capitalize word
• C-_ → undo
• C-l → clear screen

Are you interested in implementing this feature?

_No response_

Additional information

_No response_