This patch adds keybinding s in thumbnail mode to toggle between usual thumbnails and squared ones.
Only in thumbnail mode; displays the images in squares of the same size, in a more consitent and uniform way. It will scale into ('zoom') the image if it happens to be too small (horizontally or vertically) in a case that will leave a spaces around, which is the normal behaviour.
Additionally adds a keybinding to change this at runtime and a configuration option in config.def.h to change this at compile time.
- explosion-mental