[RFC]: add support for shift-selection in the REPL

[Snehil-Shah]

Description

This RFC proposes adding support for selecting regions of the input using SHIFT+ARROW in the REPL. Julia supports this (attached below).

selection.mp4

Related Issues

Related issues #2647.

Checklist

• I have read and understood the Code of Conduct.
• Searched for existing issues and pull requests.
• The issue name begins with RFC:.

[kgryte]

@Snehil-Shah To clarify, this would allow deleting multiple characters at once? What is the use case?

Hmmm...I am not sure about this key-binding. E.g., SHIFT+ARROW in tmux allows for navigating panes. Are there other possible key combinations?

[Snehil-Shah]

Julia also has keybindings around selections for copy/paste/cut operations.

And I am not affixed to any key combination for now, but I believe VSCode also has shift+arrow for selection as a keyboard shortcut.