Is there any way to execute a fish shell command to get the command line text?

[Dima-369]

My idea is to have a kitty keybinding cmd + e which gets the current command line text, opens it in my EDITOR and then on confirming, replaces the current command line text with it and executes it.

But fish shell functions like the one below can not be executed like this: map cmd+e launch --type=tab --cwd=current edit_command_buffer (or just executing commandline which is from https://fishshell.com/docs/current/cmds/commandline.html). It just fails with Failed to launch child: ... since it is not a real process.

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Using this fish shell function from fish-shell/fish-shell#1215 (comment) (I added the commandline -f execute) can help, but I can not bind it to any keyboard function.

Is here an obvious solution I am missing? Thanks, a lot!

function edit_command_buffer --description 'Edit the command buffer in an external editor'
    set -l f (mktemp)
    if set -q f[1]
        mv $f $f.fish
        set f $f.fish
    else
        # We should never execute this block but better to be paranoid.
        set f /tmp/fish.(echo %self).fish
        touch $f
    end

    set -l p (commandline -C)
    commandline -b > $f
    if set -q EDITOR
        eval $EDITOR $f
    else
        vim $f
    end

    commandline -r (cat $f)
    commandline -C $p
    command rm $f

    # Simulate hitting Enter to execute the command
    commandline -f execute
end

[kovidgoyal]

You need to set this up in fish not kitty. And IIRC this is available out of the box in fish with alt+e

[Dima-369]

Ah yes, thanks. I also needed to use macos_option_as_alt yesmacos_option_as_alt yes. Now, it finally works! This is now invocable via option e.

Just as additional info, I wanted it to be triggered on cmd e, so I used fish_key_reader, entered in cmd e and got this sequence: bind \e\[101\;9u edit_command_buffer which also works :)