Fast regex search: indexing text for agent tools

kept by eddie mar 24

Cursor is building local indexes for regular expression search to reduce agent wait times from 15-second ripgrep runs in large monorepos.

How We Improved Agentic Search
Ranking search results to surface definitions before tests and vendor code improves first-query retrieval and helps coding agents find the right files sooner, while raw speed gains alone barely reduce end-to-end runtime.
also on ripgrep, #search-engine, #ai-coding, #software-engineering, #developer-tools
How I Rebuilt My Development Workstation for Agentic Work
The author rebuilt their development workstation around terminal-native tools like WezTerm, tmux, and Neovim to support agentic workflows with parallel human-agent collaboration across Git worktrees.
also on ripgrep, #ai-coding, #software-engineering, #productivity, #developer-tools
28M Hacker News comments as vector embedding search dataset
ClickHouse provides a 28.74-million Hacker News posting dataset with vector embeddings, enabling large-scale vector search application development and testing.
also on ClickHouse, #search-engine, #software-engineering, #developer-tools
Karpathy's Autoresearch found a 3-year-old bug in our query engine (and improved performance by 11%) - PostHog
PostHog used a Karpathy-style AI agent to find a 3-year-old ClickHouse bug where `toTimeZone()` disabled primary key usage, and the fix cut query time by 37%
also on ClickHouse, #ai-coding, #software-engineering, #developer-tools
Let Me Droid That For You: What 780K Agent Searches Reveal
Analysis of 780K AI agent web searches reveals a dominant pattern: exploratory search followed by specific fetch, with 75% of queries related to software development.
also on #search-engine, GitHub, #ai-coding, #software-engineering, #developer-tools