Source Sans 3: add source block to METADATA.pb

Assisted by an AI agent (Claude Opus 4.6)

diff --git a/ofl/sourcesans3/METADATA.pb b/ofl/sourcesans3/METADATA.pb
index f7ebe599d3f991ee7b0859334caaace1363cd923..9d8d06d028559f18a184188558ca52e067c267b1 100644 (file)
--- a/ofl/sourcesans3/METADATA.pb
+++ b/ofl/sourcesans3/METADATA.pb
@@ -34,3 +34,7 @@ axes {
   min_value: 200.0
   max_value: 900.0
 }
+source {
+  repository_url: "https://github.com/adobe-fonts/source-sans"
+  commit: "272b22b02e097e8eff1372111f88b5ab6063499f"
+}

diff --git a/ofl/sourcesans3/upstream_info.md b/ofl/sourcesans3/upstream_info.md
new file mode 100644 (file)
index 0000000..61aa74f
--- /dev/null
+++ b/ofl/sourcesans3/upstream_info.md
@@ -0,0 +1,38 @@
+# Source Sans 3 — Upstream Investigation
+
+**Model**: Claude Opus 4.6
+**Date**: 2026-03-12
+**Investigator**: AI agent (Claude) under guidance of @felipesanches
+
+## Summary
+
+The canonical upstream repository for Source Sans 3 was identified as
+`adobe-fonts/source-sans` on GitHub. The repository contains UFO source files
+on the `main` branch and is actively maintained by Adobe.
+
+## Repository
+
+- **URL**: https://github.com/adobe-fonts/source-sans
+- **Branch**: `main`
+- **Commit**: `272b22b02e097e8eff1372111f88b5ab6063499f`
+- **Commit message**: "Update index.html"
+
+## Source Format
+
+The `main` branch contained UFO sources in the `Upright/Poles/` and
+`Italic/Poles/` directories. The upright UFOs were located at paths such as
+`Upright/Poles/pole_0/SourceSans3-ExtraLight.ufo`. Designspace files were also
+present (`Upright/SourceSans3-Upright.designspace`). The `release` branch
+contained only compiled font binaries.
+
+## Decision
+
+The `source` block was added to `METADATA.pb` pointing to `adobe-fonts/source-sans`
+at commit `272b22b02e097e8eff1372111f88b5ab6063499f` on the `main` branch.
+
+## Notes
+
+The designer listed in METADATA.pb is Paul D. Hunt. Source Sans 3 (formerly
+Source Sans Pro) is an open-source sans-serif typeface family created by Adobe.
+It was the first open-source typeface family published by Adobe and is licensed
+under the SIL Open Font License.