Ghostty vs preview

[og900aero]

Does anyone use Ghostty terminal? The image preview doesn't work for me. I've already tried a very simple preview script (with sixel support), but nothing (it works perfectly under foot and alacritty).

#!/bin/sh

case "$(file -Lb --mime-type -- "$1")" in
  image/*)
    chafa -f sixel -s "$2x$3" --animate off --polite on -t 1 --bg black "$1"
    ;;
  text/*)
    cat "$1"
    ;;
esac

I tried -f kitty too, but doesnt work under lf. When I tried under terminal, then show picture.

[CatsDeservePets]

Ghostty does not support sixel as it seems. Changing -f sixel to -f kitty however does not work inside lf, as lf does not support the kitty image protocol.

I have the following in my previewer script:

if [ "$TERM" = "xterm-kitty" ] || [ "$TERM" = "xterm-ghostty"  ]; then
    kitty +kitten icat --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" "$file" < /dev/null > /dev/tty
else
    Chafa "$file" --format sixel --size "${w}x${h}" --animate off --polite on
fi

You also have to update your cleaner accordingly.

You can find more information and examples here.

[og900aero]

Ghostty does not support sixel as it seems. Changing -f sixel to -f kitty however does not work inside lf, as lf does not support the kitty image protocol.

I have the following in my previewer script:

if [ "$TERM" = "xterm-kitty" ] || [ "$TERM" = "xterm-ghostty"  ]; then
    kitty +kitten icat --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" "$file" < /dev/null > /dev/tty
else
    Chafa "$file" --format sixel --size "${w}x${h}" --animate off --polite on
fi

You also have to update your cleaner accordingly.

You can find more information and examples here.

I have already read the Wiki on this subject, but I absolutely do not understand what you have written now. your script fragment examines the TERM variable, and if it is kitty, it uses kitten internal command, if it is ghostty, it uses chafa. But as I wrote, there is no preview with either chafa -s sixel or chafa -s kitty.
Furthermore, in the case of sixel, I don't think a cleaner script is necessary. At least so far, when using sixel, I haven't needed foot, alacritty, or st with sixel.

[CatsDeservePets]

No, this executes the kitty +kitten command for both Ghostty and kitty and chafa for every other terminal. The cleaner is needed, as we bypass lf and write to the terminal directly.

[og900aero]

I tried the following code:

previewer:

#!/bin/bash
file="$1"
w="$2"
h="$3"
x="$4"
y="$5"

case "$(file -Lb --mime-type -- "$file")" in
    image/*)
        if [ "$TERM" = "xterm-kitty" ] || [ "$TERM" = "xterm-ghostty"  ]; then
            kitty +kitten icat --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" "$file" < /dev/null > /dev/tty
        else
            chafa "$file" --format sixel --size "${w}x${h}" --animate off --polite on
        fi

        exit 1
        ;;
    *)
        cat "$file"
        ;;
esac

and the cleaner:

#!/bin/sh

exec kitten icat --clear --stdin no --transfer-mode memory </dev/null >/dev/tty

But the preview doesnt work. Nothing show.
But I don't really understand why it should work, because when I install ghostty, there is no kitty kitten command. I guess it's only there when I install kitty.

[CatsDeservePets]

But the preview doesnt work. Nothing show.
But I don't really understand why it should work, because when I install ghostty, there is no kitty kitten command. I guess it's only there when I install kitty.

You are right. I never really thought about that. I tried redirecting chafa -f kitty output in many ways to write directly to the terminal. I did kinda work but also really messed up lfs UI and image placement was also off. I tried moving the cursor using ANSI escape sequences but had no luck with that. I am out of ideas at this point.

[og900aero]

Thx for your help.

[og900aero]

I downloaded kitten binary file, then tried the following preview and cleaner script:

Preview:

#!/bin/sh

file="$1"
w="$2"
h="$3"
x="$4"
y="$5"

case "$(file -Lb --mime-type -- "$file")" in
    image/*)
            kitten icat --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" "$file" < /dev/null > /dev/tty
        exit 1
    ;;
esac
exit 1

Cleaner:

#!/bin/sh

exec kitten icat --clear --stdin no --transfer-mode memory </dev/null >/dev/tty

But displaying the preview image is very slow. Viewing a 3-5MB image takes 1.5-2 seconds, while Sixel is almost instantaneous.