Implementing Dynamic Scoping in Fennel: A Clever Approach

The author tackles the challenge of implementing dynamic scoping in Fennel, a Lua dialect where it's not natively supported. The article explores several approaches, including manipulating function environments using Lua's debug library and cleverly cloning functions to set their environments. While the author ultimately decides against integrating this feature into the fennel-cljlib library for now, the in-depth exploration of Lua function environments and dynamic scoping, along with the comparison of different implementation strategies, provides valuable insights into functional and metaprogramming concepts.