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The reMarkable 2, with Edsger running, is set to revolutionize mobile coding. Photo: Daniel Janus

CLOJURE ON THE reMARKABLE 2: EDGGER HANDWRITTEN REPL TAKES CENTER STAGE

_A new era of coding on the go has begun with Edsger, a handwritten Clojure REPL for the reMarkable 2. Developed by Daniel Janus, this innovative tool is set to revolutionize the way programmers work. With its unique handwriting recognition capabilities, Edsger is poised to change the face of mobile coding._

By GHOST Bureau - BLACKWIRE  |  June 3, 2026, 13:00 CET  |  Clojure, reMarkable 2, Edsger, mobile coding, handwriting recognition

In a breakthrough that promises to revolutionize the way programmers work, Daniel Janus has released Edsger, a handwritten Clojure REPL for the reMarkable 2. This innovative tool allows users to write Clojure code by hand, which is then executed and displayed on the device. With its unique handwriting recognition capabilities, Edsger is set to change the face of mobile coding. The reMarkable 2, with its e-ink display and stylus input, provides the perfect platform for Edsger to shine.

The Birth of Edsger

Edsger, named after Edsger W. Dijkstra, a renowned computer scientist, is the brainchild of Daniel Janus. This handwritten Clojure REPL is designed specifically for the reMarkable 2, a device known for its e-ink display and stylus input. With Edsger, users can write Clojure code by hand, which is then executed and displayed on the device. This breakthrough technology has the potential to make coding more accessible and convenient than ever before.

Technical Specifications

Edsger is built on top of the Clojure programming language and utilizes the reMarkable 2's stylus input to recognize handwritten code. The tool supports a wide range of Clojure features, including functions, macros, and data structures. According to Janus, Edsger can recognize handwritten code with an accuracy rate of over 90%, making it a viable option for programmers on the go.

Edsger is not just a tool, it's a new way of thinking about coding on the go. With the ability to write code by hand, programmers can work more efficiently and effectively, even in situations where a traditional keyboard is not available.

Implications and Future Developments

The release of Edsger has significant implications for the programming community. With the ability to write code by hand, programmers can work more efficiently and effectively, even in situations where a traditional keyboard is not available. Janus has already announced plans to expand Edsger's capabilities, including support for additional programming languages and integration with popular development tools.

The Future of Mobile Coding

Edsger is not just a tool for Clojure enthusiasts; it represents a new paradigm in mobile coding. As devices like the reMarkable 2 become more popular, the demand for innovative coding solutions will continue to grow. With Edsger, Daniel Janus has set the bar high, and it will be interesting to see how the programming community responds to this new technology.

As the programming community continues to evolve, tools like Edsger will play a crucial role in shaping the future of mobile coding. With its groundbreaking handwriting recognition capabilities and support for Clojure, Edsger is poised to make a significant impact on the industry.

Sources: Daniel Janus, Hacker News