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Daniel Jalkut

PROFILE

Daniel Jalkut

Worked across matomo-org/matomo, shengxinjing/ollama, and tree-sitter/tree-sitter repositories to deliver targeted backend and documentation improvements. Focused on backend development in C and Rust, they enhanced file integrity checks in Matomo by reconstructing file paths before realpath calls, reducing data loss risks from symlink resolution. In tree-sitter, they improved UTF-16 decoding stability and clarified CLI documentation, supporting robust parser development and better onboarding for downstream users. Maintenance work in the Ollama repository included updating Markdown documentation to remove dead links, ensuring accuracy and reducing user confusion. Their approach emphasized reliability, clear documentation, and careful risk mitigation throughout.

Overall Statistics

Feature vs Bugs

25%Features

Repository Contributions

4Total
Bugs
3
Commits
4
Features
1
Lines of code
156
Activity Months4

Work History

March 2026

1 Commits

Mar 1, 2026

March 2026 monthly summary focusing on stability improvements in the core UTF-16 decoding path for tree-sitter/tree-sitter. No new user-facing features were released this month; the primary contribution was a critical bug fix that strengthens lexer correctness across streaming chunk boundaries and reduces risk of buffer over-reads.

April 2025

1 Commits • 1 Features

Apr 1, 2025

Month: 2025-04 — Focused on improving the CLI documentation for the edits argument in tree-sitter/tree-sitter to reduce ambiguity and support multiple edits in a single command; delivered a clear specification for using row,col or position formats and updated docs accordingly. No major bugs fixed this month.

January 2025

1 Commits

Jan 1, 2025

January 2025: Ollama repository maintenance focused on documentation accuracy and user guidance; no new features deployed; removed dead link in Modelfile documentation to point users to existing resources; no functional changes.

December 2024

1 Commits

Dec 1, 2024

December 2024 Monthly Summary for matomo-org/matomo: Focused on hardening file integrity checks to prevent data loss and improve reliability. Delivered a safe realpath usage pattern by reconstructing the path with dirname and basename before passing to realpath, mitigating risks of resolving symlinks to targets and incorrect deletion suggestions.

Activity

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Quality Metrics

Correctness100.0%
Maintainability95.0%
Architecture100.0%
Performance85.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CMarkdownPHPRust

Technical Skills

Backend DevelopmentCLIDocumentationparser developmenttest-driven developmentunicode handling

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

tree-sitter/tree-sitter

Apr 2025 Mar 2026
2 Months active

Languages Used

MarkdownRustC

Technical Skills

CLIDocumentationparser developmenttest-driven developmentunicode handling

matomo-org/matomo

Dec 2024 Dec 2024
1 Month active

Languages Used

PHP

Technical Skills

Backend Development

shengxinjing/ollama

Jan 2025 Jan 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation