wip/ueberzugpp 2.9.6 NetBSD

Ueberzug++ is a command line utility written in C++ which allows to draw images on terminals by using X11/wayland child windows, sixels, kitty and iterm2..

This project intends to be a drop-in replacement for the now defunct ueberzug project.

Advantages over w3mimgdisplay and ueberzug:

• support for wayland: sway, hyprland and wayfire
• support for MacOS
• no race conditions as a new window is created to display images
• expose events will be processed, so images will be redrawn on switch workspaces
• tmux support on X11, sway and hyprland
• terminals without the WINDOWID environment variable are supported
• chars are used as position - and size unit
• No memory leak (usage of smart pointers)
• A lot of image formats supported (through opencv and libvips).