feature: turn select output of command into an action and assign it a keybinding

[Jiehong]

Context

I stumbled upon #4385 when trying to see if I could copy the output of a command with a keyboard shortcut.

Alas, I could not find out how to make this happen.

What is already present

In https://ghostty.org/docs/features/shell-integration#features, we have:

Triple-click while holding control (Linux) or command (macOS) to select the output of a command.

But this requires to click with the mouse.

Furthermore, ghostty +list-actions does not list any action to select the output of the current command.

ghostty +list-keybinds does not show any keybinding related either.

Wished workflow

I would like to be able to move to a command with the keyboard, and copy its output with a keyboard shortcut.

For example, by doing this:

1. super + up -- move to previous pompt (aka jump_to_prompt:-1)
2. (optional) super + up -- move to yet another prompt, if it's not the right one
3. super + shift + c -- copy to the clipboard the output of the current command linked to this prompt

Currently, step 3 is not possible.

Possible implementation

Perhaps a new action could be created, such as copy_command_output, and a new keybinding assigned to it.

[mitchellh]

Noting I read this and I'm in agreement this should become an action. I want to think about what the action name would be (or maybe multiple).

[miekg]

Why not reuse control+shift+c (if there is no selection), by default copy the output of the last command, if jumped to a previous prompt copy the output from that command?