@yvan Hi! The font is a patched version of a commercial font known as Operator Mono. The project to patch it is called Operator Mono Lig and it adds the programming ligatures: https://github.com/kiliman/operator-mono-lig You need to obtain Operator Mono (officially available from https://www.typography.com/fonts/operator/styles) in order to run the patcher to produce the ligatured version of the font. I love this particular font and its been my daily driver for years now.