# collab-staging: markdown: Fix crashes on tab-indented code blocks (#65398)

**Published:** 2026-10-09T15:56:46+00:00  
**Source:** Zed High-Performance Code Editor  
**Category:** foss-apps  
**Canonical URL:** https://fosswire.org/news/collab-staging-markdown-fix-crashes-on-tab-indented-code-blo.html  

## Executive Summary
Fixes #65320 Key cached highlights by typed event indices instead of source offsets, which can collide during tab expansion. Add a layout regression test covering the crash and related edge cases. Release Notes: Fixed crashes on tab-indented code blocks

## Architectural & Systems Analysis
From a desktop application, client performance, and user-space engineering perspective:

- **Local-First Computation:** Workloads prioritize client-side execution, eliminating mandatory surveillance telemetry.
- **Cross-Platform Toolchains:** Modern GUI frameworks (Qt, GTK) ensure optimal resource utilization without memory bloat.
- **Format Interoperability:** Implements open, non-proprietary file formats, protecting user data from vendor entrapment.

## Impact on the Open Ecosystem
Safeguards everyday workflow productivity within a trustworthy, zero-telemetry free software ecosystem.