thunderbird/thunderbird-l10n
Oct 2025 – Jun 2026
4 Months active
Languages Used
FTLHTMLJavaScript
Technical Skills
LocalizationFluentJavaScriptfront end developmentinternationalizationlocalization
Matjaz Horvat
PROFILE
Matjaz Horvat
Worked on the thunderbird/thunderbird-l10n repository over four months, focusing on modernizing localization and enhancing UI usability for Thunderbird. Delivered five features that migrated legacy DTD strings and UI text to the Fluent localization format, improving consistency and maintainability across multilingual releases. Used JavaScript, Fluent, and HTML to update core UI components, including the Mail UI, Filter Editor, and Saved Search Dialogs, while introducing new localized strings and validation feedback. Removed outdated pluralization logic and consolidated localization pipelines, reducing technical debt. The work established a robust foundation for internationalization, supporting smoother updates and broader language coverage in future releases.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
9Total
Bugs
0
Commits
9
Features
5
Lines of code
86
Activity Months4
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360 peopleShared Repositories
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Work History
June 2026
2 Commits • 1 Features
Jun 1, 2026Month 2026-06 — Delivered Fluent UI localization migrations for Thunderbird L10n, focusing on the Mail UI and Saved Search Dialogs. This work migrated UI text to Fluent, including mailnews tags and UI labels, and added a Fluent-localized title for editing properties of saved search folders in the virtual folder properties dialog. The changes establish a solid localization foundation, reduce translation drift, and enable broader internationalization coverage in upcoming releases.
2 Commits • 1 Features
Jun 1, 2026Month 2026-06 — Delivered Fluent UI localization migrations for Thunderbird L10n, focusing on the Mail UI and Saved Search Dialogs. This work migrated UI text to Fluent, including mailnews tags and UI labels, and added a Fluent-localized title for editing properties of saved search folders in the virtual folder properties dialog. The changes establish a solid localization foundation, reduce translation drift, and enable broader internationalization coverage in upcoming releases.
June 2026
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: Focused on localization and validation enhancements for the Filter Editor in thunderbird/thunderbird-l10n, aligned UI with Fluent, and strengthened user feedback around invalid search rules and action ordering. This work improves internationalization coverage, UI consistency, and lays the groundwork for broader Fluent migration.
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026: Focused on localization and validation enhancements for the Filter Editor in thunderbird/thunderbird-l10n, aligned UI with Fluent, and strengthened user feedback around invalid search rules and action ordering. This work improves internationalization coverage, UI consistency, and lays the groundwork for broader Fluent migration.
February 2026
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly work summary for thunderbird/thunderbird-l10n focusing on localization modernization and UI usability improvements. Key achievements include migrating localization to Fluent across core UI components, removing Legacy PluralForm.sys.mjs usage, and enhancing the filter editor with a visible/total item count. These efforts reduced technical debt, improved localization coverage, and strengthened user experience for multilingual users, supporting smoother international releases.
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly work summary for thunderbird/thunderbird-l10n focusing on localization modernization and UI usability improvements. Key achievements include migrating localization to Fluent across core UI components, removing Legacy PluralForm.sys.mjs usage, and enhancing the filter editor with a visible/total item count. These efforts reduced technical debt, improved localization coverage, and strengthened user experience for multilingual users, supporting smoother international releases.
February 2026
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for thunderbird-thunderbird-l10n: Delivered Spam Filtering Localization Modernization by migrating junk mail/spam filtering strings from DTD to Fluent and adding the new 'spam-actions-legend' to define target and preservation actions for spam. This work reduces localization debt, improves consistency across locales, and enables faster updates to spam UI strings. The change was implemented in the Thunderbird Localizations repo under Bug 1823084 with commit a19038e277f83d3ff5540048c355b019db1d4e1e.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for thunderbird-thunderbird-l10n: Delivered Spam Filtering Localization Modernization by migrating junk mail/spam filtering strings from DTD to Fluent and adding the new 'spam-actions-legend' to define target and preservation actions for spam. This work reduces localization debt, improves consistency across locales, and enables faster updates to spam UI strings. The change was implemented in the Thunderbird Localizations repo under Bug 1823084 with commit a19038e277f83d3ff5540048c355b019db1d4e1e.
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
FTLHTMLJavaScript
Technical Skills
FluentJavaScriptLocalizationUI/UX designfront end developmentinternationalizationlocalizationuser interface design
Repositories Contributed To
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