The Developer's Ultimate Taboo: Rejecting the Ecosystem
In an era dominated by Visual Studio Code's sprawling extension marketplace, JetBrains' intelligent IDEs, and the timeless,近乎religious efficiency of Vim, a quiet but profound rebellion is taking shape. A growing cohort of senior developers, systems programmers, and digital artisans are performing the ultimate act of technological self-determination: they are writing their own text editors from scratch and, more radically, daily-driving them for their professional work. This isn't merely a hobbyist project; it's a deep dive into the philosophy of tools, a confrontation with decades of computing history, and a personal optimization journey taken to its logical extreme.
The original article by João Barretto serves as a compelling case study in this movement. He details the multi-year journey of creating "Kibi," a minimal, modal editor written in Rust, and his commitment to using it as his primary tool. His narrative is not one of seamless victory but of iterative struggle—a cycle of identifying workflow friction, implementing a fix in his editor, and gradually molding the tool to the exact contours of his mind. This process reveals a fundamental truth: the most powerful editor is not the one with the most features, but the one whose behavior you completely understand and control.
Key Takeaways
- Control Over Friction: Building your editor lets you surgically remove the tiny, cumulative annoyances (slow startup, distracting UI, unwanted features) that plague modern, general-purpose tools.
- The Learning Multiplier: The deep systems knowledge gained from building core editor components (syntax highlighting, buffer management, input handling) pays dividends across a developer's entire career.
- Philosophical Reclamation: This trend represents a pushback against bloated, surveillant software and a return to the Unix philosophy of small, composable, transparent tools.
- The Productivity Paradox: While initially a massive time sink, a custom editor can lead to unparalleled long-term efficiency by creating a perfectly tailored cognitive environment.
- A New Era of Personal Computing: The movement signals a shift towards highly personalized, modular toolchains, challenging the one-size-fits-all approach of major tech companies.
Top Questions & Answers Regarding Building a Custom Text Editor
Isn't this just a massive waste of time when perfect editors already exist?
This is the most common objection. The counter-argument is two-fold. First, "perfect" is subjective. An editor like VSCode is optimized for broad appeal, not for your specific neural pathways. The time "wasted" building is recuperated a thousandfold by the elimination of daily micro-frustrations over years. Second, the educational value is incalculable. Understanding how an editor works at the level of keystrokes, buffers, and rendering is a masterclass in systems programming that makes you a better developer in all other domains.
What are the biggest technical hurdles to overcome?
Developers consistently point to three core challenges: 1. Input & Modality: Creating a responsive, bug-free input system that handles complex keybindings and modal editing (like Vim) is deceptively difficult. 2. Text Rendering & Performance: Efficiently rendering large files, handling complex Unicode, and implementing smooth scrolling requires deep knowledge of graphics and data structures. 3. Ecosystem Integration: Replicating even 10% of the Language Server Protocol (LSP) or debugger integration found in mainstream IDEs is a multi-year project in itself.
Do you have to be a Rust or C++ systems wizard to attempt this?
Absolutely not. While performance-critical editors like Kibi (Rust) or Helix (also Rust) benefit from low-level control, the philosophy is accessible in any language. The seminal editor Acme was written in Alef. Many modern attempts use Go, Zig, or even high-level languages like Python with performant GUI toolkits. The primary goal is understanding and control; raw performance is a secondary, albeit important, concern. Starting with a simple editor in a language you know is more valuable than getting stuck in a complex systems language.
What's the first feature you should implement?
Veterans of the process advise a strict MVP (Minimum Viable Product) approach. Step 1: Open, edit, and save a plain text file. Step 2: Implement cursor movement and basic editing (insert, delete). Step 3: Add file persistence. Everything else—syntax highlighting, multiple buffers, plugins, LSP—is a luxury built on this rock-solid foundation. The key is to use this barebones editor for a small, real task immediately, which will instantly reveal your first critical pain points to solve.
Historical Context: From ed to VSCode and Back Again
The history of text editors is a cycle of complexity and simplification. It began with line editors like ed in the 1970s—tools so minimal they are now considered arcane. The 1980s and 1990s saw the rise of screen-based editors: Emacs (1976), offering unparalleled extensibility at the cost of complexity, and Vi (1976), with its modal efficiency that created a cult following. These tools were ecosystems unto themselves.
The 2000s introduced integrated development environments (IDEs) like Eclipse and IntelliJ, which bundled everything a developer might need. The 2010s brought a reaction with Sublime Text's speed and VSCode's web-tech-based, extensible middle ground. Now, in the 2020s, we see a new reaction: a return to first principles. Developers building their own editors are, in a sense, rejecting 50 years of accrued features to ask: "What do *I* actually need to manipulate text and code effectively?" They are combining the raw, transparent power of early Unix tools with modern language ergonomics and hardware.
Three Analytical Angles on the DIY Editor Movement
1. The Cognitive Ergonomics Angle
A text editor is not just a tool; it's the primary interface between a developer's intent and the machine. Every unnecessary dialog, slow autocomplete, or unfamiliar keybinding creates cognitive load. A self-built editor eliminates this. It becomes a seamless extension of thought. The developer programs their own reflexes directly into the tool, creating a feedback loop where improving the editor feels like upgrading their own brain. This is the ultimate in Human-Computer Interaction (HCI) personalization—a tool that adapts to the user so completely that the interface disappears.
2. The Software Sustainability and Ethics Angle
Modern mainstream editors are marvels of engineering, but they are also complex, often closed-source or telemetry-heavy, and subject to the business priorities of their parent companies. Building your own editor is a declaration of independence. It results in a tool that is understandable, auditable, and permanent. It will not change on a product manager's whim, will not phone home, and will not break because a remote extension server is down. In an age of software bloat and vendor lock-in, this represents a pure form of digital self-reliance.
3. The Mastery and Craftsmanship Angle
There is a profound difference between using a tool and understanding it. Building an editor forces mastery over concepts like rope data structures for text buffers, finite state machines for parsing, efficient screen redraw algorithms, and asynchronous I/O. This journey transforms the developer from a consumer of abstractions to a creator of foundations. It's the software equivalent of a woodworker forging their own chisels before crafting furniture. The resulting product is not just the editor itself, but the deepened expertise of its creator.
The Future: Niche Tools and Composable Architectures
The "build your own editor" movement is not a call for everyone to abandon VSCode. Rather, it's a leading indicator of a broader trend: the end of monolithic, generic software and the rise of highly personalized, composable toolchains. We see this in the success of Neovim, which is essentially a framework for building your own IDE, and in tools like Zed, which are betting on performance and collaboration from the ground up.
The future may lie in editor "libraries" or "frameworks"—well-designed, modular components for syntax trees, LSP clients, and UI toolkits that make building a personal editor less about reinventing the wheel and more about assembling a bespoke vehicle. The goal is a world where a developer's primary tool is as unique as their fingerprint, yet still capable of seamless collaboration, because it speaks the standard protocols of the wider ecosystem. The journey João Barretto and others have embarked upon is not an anachronism; it is a pioneering expedition into the next era of personal computing.