This post provides a brief introduction to fundamental Emacs Lisp concepts. It covers basic data types like numbers, strings, and booleans, explaining how to manipulate them with built-in functions. The post also introduces lists, a crucial data structure in Lisp, showcasing their use in function definitions and data representation. It delves into defining functions with defun, demonstrating argument handling and return values. Finally, the post touches upon special forms like if and let for control flow and variable scoping, ultimately aiming to equip readers with the foundational knowledge needed to understand and write simple Emacs Lisp code.
Emacs 31 introduces native frame transposition, a significant improvement for multi-monitor setups. This new feature allows users to quickly and smoothly move frames between different monitors, preserving their relative size and position. Previously, moving frames across monitors often resulted in distorted sizing or placement. With native frame transposition, Emacs now understands monitor geometries, enabling a seamless transition and a more consistent user experience across displays. This enhancement provides a more intuitive and efficient workflow for users working with multiple monitors.
Hacker News users generally expressed excitement about native frame transposition in Emacs 31. Several commenters highlighted the performance improvements this change brings, particularly for complex window configurations or remote sessions. Some discussed existing workarounds they'd used, like ace-window, while others anticipated how this would simplify their Emacs configurations. A few users also pointed out potential benefits for tiling window managers and speculated about possible future enhancements, such as transposing frames across different monitors. The overall sentiment was positive, viewing the change as a welcome quality-of-life improvement for Emacs users.
This blog post details how to implement custom syntax highlighting in Emacs using tree-sitter. The author demonstrates creating a minor mode for highlighting TODO items and FIXMEs in comments within C++ code. This involves defining specific queries that target the comment nodes in the tree-sitter parse tree and then associating faces (colors and styles) with the captured nodes. The example provides a practical illustration of leveraging tree-sitter's structured code understanding to achieve more precise and context-aware highlighting than traditional regular expression-based approaches. The post also briefly covers how to incorporate these queries into a theme for broader application and includes a troubleshooting tip for ensuring tree-sitter highlighting is active.
HN commenters largely praised the integration of tree-sitter into Emacs, highlighting the significant improvements in syntax highlighting accuracy and performance. Some expressed excitement over the potential for more advanced features like semantic highlighting and code navigation enabled by tree-sitter's deeper understanding of code structure. A few users shared their personal experiences with setting up and using tree-sitter in Emacs, offering tips and workarounds for common issues. One commenter noted the wider adoption of tree-sitter across various editors and its positive impact on the developer experience. Others discussed the technical details of tree-sitter's implementation, comparing it to traditional regular expression-based highlighting. A couple of comments touched on the potential for future improvements, such as asynchronous parsing and better support for more obscure languages.
The author explains their extensive use of Org Mode, an Emacs extension, as a powerful, all-encompassing tool beyond simple note-taking. They highlight its flexibility for managing writing projects, from initial brainstorming and outlining to drafting, editing, and publishing. Org Mode's structured format, using plain text and simple markup, facilitates easy reorganization, version control with Git, and export to various formats like HTML and PDF. The author demonstrates how features like tags, links, and the ability to embed code and results directly into documents make it ideal for technical writing, literate programming, and project management, ultimately creating a unified system for knowledge creation and organization.
Hacker News users generally praised the article for its clear explanation of Org Mode's benefits and the author's workflow. Several commenters shared their own experiences and tips for using Org Mode, highlighting its versatility for tasks beyond writing, such as project management and note-taking. Some discussed the learning curve associated with Org Mode, acknowledging its initial complexity but emphasizing the long-term payoff. A few users mentioned alternative tools, but the overall sentiment leaned towards appreciating Org Mode's powerful features and extensibility. The discussion also touched upon the advantages of plain text and the philosophical appeal of owning your data.
This blog post details how to create and manage recurring checklists within Emacs' Org Mode. It leverages the SCHEDULED and STYLE properties of list items to automate the reappearance of tasks at specified intervals. The author demonstrates how to define a daily checklist template, schedule its repetition daily, and configure it to reset each morning, ready for a new day's checking. Furthermore, it explores more complex scenarios, including using timestamps to track completion history and adding specific scheduling keywords for more nuanced control over recurrence, like excluding weekends. The post also briefly covers handling checklist items that don't need daily resetting.
Hacker News users generally praised the article for its clear explanation of using Org Mode for recurring tasks. Several commenters shared their own workflows and modifications, including using the org-super-agenda package, scripting with elisp for more complex recurring tasks, and integrating with mobile apps like Orgzly. Some pointed out potential limitations of the author's approach, suggesting alternatives like dynamic blocks for greater flexibility. The discussion also touched on broader Org Mode features, such as capturing tasks and agenda views. A few users highlighted the steep learning curve of Emacs and Org Mode but affirmed their power once mastered.
Parinfer simplifies Lisp code editing by automatically managing parentheses, brackets, and indentation. It offers two modes: "Paren Mode," where indentation dictates structure and Parinfer adjusts parentheses accordingly, and "Indent Mode," where parentheses define the structure and Parinfer corrects indentation. This frees the user from manually tracking matching delimiters, allowing them to focus on the code's logic. Parinfer analyzes the code as you type, instantly propagating changes and offering immediate feedback about structural errors, leading to a more fluid and less error-prone coding experience. It's adaptable to different indentation styles and supports various Lisp dialects.
HN users generally praised Parinfer for making Lisp editing easier, especially for beginners. Several commenters shared positive experiences using it with Clojure, noting improvements in code readability and reduced parenthesis-related errors. Some highlighted its ability to infer parentheses placement based on indentation, simplifying structural editing. A few users discussed its potential applicability to other languages, and at least one pointed out its integration with popular editors. However, some expressed skepticism about its long-term benefits or preference for traditional Lisp editing approaches. A minor point of discussion revolved around the tool's name and how it relates to its functionality.
Summary of Comments ( 43 )
https://news.ycombinator.com/item?id=43665046
HN users largely praised the article for its clarity and accessibility in explaining Emacs Lisp fundamentals. Several commenters highlighted its usefulness for beginners, with one calling it the best introduction they'd seen. Some appreciated the focus on practical examples and the author's clear writing style. A few pointed out minor typos or suggested additional topics, like dynamic scoping. One user mentioned using the article as a basis for an Emacs Lisp presentation, further demonstrating its perceived value within the community. The overall sentiment was overwhelmingly positive, indicating the article successfully fills a need for a concise and understandable guide to Emacs Lisp.
The Hacker News post titled "Emacs Lisp Elements" has generated a modest number of comments, primarily focusing on the accessibility and usefulness of the linked article as an introductory resource to Emacs Lisp.
Several commenters praise the article for its clear and concise explanations, particularly appreciating its focus on fundamental concepts and avoidance of overly complex examples. One user specifically highlights the value of the article for beginners, stating that it provides a solid foundation for understanding Emacs Lisp without overwhelming the reader. Another commenter echoes this sentiment, emphasizing the article's helpfulness in grasping the basic building blocks of the language.
The discussion also touches upon the broader context of learning Emacs and its customization capabilities. One commenter suggests that the article serves as a good starting point for users who want to delve deeper into Emacs Lisp and personalize their Emacs experience. Another points out the potential of Emacs Lisp for extending Emacs functionality and creating custom tools, further emphasizing the practical applications of the knowledge gained from the article.
One user questions the necessity of learning Emacs Lisp for basic Emacs usage, suggesting that many users can effectively utilize Emacs without in-depth knowledge of the language. This prompts a counter-argument from another commenter who highlights the benefits of understanding Emacs Lisp, even at a basic level, for tasks such as customizing keybindings and minor configurations. This exchange reflects a common debate within the Emacs community regarding the balance between ease of use and the power of customization offered by Emacs Lisp.
While several commenters appreciate the article's focus on simplicity, one user expresses a desire for more advanced topics and examples. This suggests that while the article caters well to beginners, it may not fully satisfy users seeking more in-depth exploration of Emacs Lisp capabilities.
Overall, the comments generally portray the linked article as a valuable resource for individuals new to Emacs Lisp, offering a clear and accessible introduction to the language's fundamental concepts. While some users desire more advanced content, the majority of the comments focus on the article's effectiveness in providing a solid foundation for beginners.