Emacs: scan this QR/bar code

from blog lmno.lol @alvaro, | ↗ original
Another day, another tool brought to my Emacs fingertips. A while ago, I wrote about easily copying text from desktop to mobile via QR codes. Later on, I brought it under dwim-shell-command as dwim-shell-commands-clipboard-to-qr. This time around, I needed the opposite: to scan a code from an image file. This is where zbar's zbarimg comes in....