Fennel

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Fennel is a programming language created in 2016 by Calvin Rose.

Source code:

git clone https://github.com/bakpakin/fennel

#409on PLDB

8Years Old

207Repos

Lua Lisp Language

Fennel website
Fennel is developed on GitHub and has 1,699 stars
There are at least 207 Fennel repos on GitHub
Fennel first developed in https://lists.sr.ht/%7Etechnomancy/fennel
file extensions for Fennel include fnl
The Google BigQuery Public Dataset GitHub snapshot shows 12 users using Fennel in 12 repos on GitHub
Pygments supports syntax highlighting for Fennel
fennel-lang.org was registered in 2018

Example from the web:

;; Sample: read the state of the keyboard and move the player accordingly
(local dirs {:up [0 -1] :down [0 1] :left [-1 0] :right [1 0]})
(each [key delta (pairs dirs)]
  (when (love.keyboard.isDown key)
    (let [[dx dy] delta
          [px py] player
          x (+ px (* dx player.speed dt))
          y (+ py (* dy player.speed dt))]
      (: world :move player x y))))

Example from hello-world:

(print "Hello World")

Feature	Supported	Token	Example
Integers	✓		; -?\d+
Floats	✓		; -?\d+\.\d+
Strings	✓	"	"Hello world"
Print() Debugging	✓	print
Comments	✓		; A comment
Line Comments	✓	;	; A comment
Semantic Indentation	X

Fennel - Programming language

Language features