I'm confused by the criteria for what's included and what's not. Not included: Zig, Elm, Odin, Hare Included: GCC (not a language), Jekyll (not a language), B

I'm confused by the criteria for what's included and what's not. Not included: Zig, Elm, Odin, Hare Included: GCC (not a language), Jekyll (not a language), Bel (not even sure there's a complete implementation, definitely not widely used)