Concert One: add source block to METADATA.pb

- Repo: librefonts/concertone
- Commit: c2160f49 (only commit in repo)
- Config: none (SFD-only sources)
- Status: missing_config
- Confidence: HIGH

diff --git a/ofl/concertone/METADATA.pb b/ofl/concertone/METADATA.pb
index 6db443b32c5e5ee479b1fefdbe6afb074039c75a..581dd3c193a9c18614d4b8e44498cd697669ba3b 100644 (file)
--- a/ofl/concertone/METADATA.pb
+++ b/ofl/concertone/METADATA.pb
@@ -3,6 +3,11 @@ designer: "Johan Kallas, Mihkel Virkus"
 license: "OFL"
 category: "DISPLAY"
 date_added: "2011-11-23"
+source {
+  repository_url: "https://github.com/librefonts/concertone"
+  commit: "c2160f498dbb0ebf8394fbd117c21d2160cdef01"
+}
+
 fonts {
   name: "Concert One"
   style: "normal"

diff --git a/ofl/concertone/upstream_info.md b/ofl/concertone/upstream_info.md
new file mode 100644 (file)
index 0000000..f956c18
--- /dev/null
+++ b/ofl/concertone/upstream_info.md
@@ -0,0 +1,49 @@
+# Concert One - Investigation Report
+
+## Source Data
+
+| Field | Value |
+|-------|-------|
+| Family Name | Concert One |
+| Designer | Johan Kallas, Mihkel Virkus |
+| Repository URL | https://github.com/librefonts/concertone |
+| Commit | c2160f498dbb0ebf8394fbd117c21d2160cdef01 |
+| Branch | master |
+| Config YAML | N/A (SFD-only sources) |
+| Status | missing_config |
+
+## How URL Found
+
+The repository URL `https://github.com/librefonts/concertone` was identified from the librefonts organization, which hosts mirrored source repositories for many early Google Fonts families. The source block was added in commit `9a14639f3` ("Add source blocks to 602 more METADATA.pb files") on the pending PR branch `sources_info_2026-02-25` (PR #10270). This PR has not yet been merged into main.
+
+The current METADATA.pb on main does not have a source block.
+
+## How Commit Determined
+
+The commit `c2160f498dbb0ebf8394fbd117c21d2160cdef01` is the HEAD (and only commit in the shallow clone) of the `librefonts/concertone` repository. The commit message is "update .travis.yml". This is a standard librefonts repo pattern where the single visible commit represents the latest state of the source archive.
+
+## Config YAML Status
+
+No config.yaml exists in the upstream repository. The source files are:
+- `src/ConcertOne-Regular-TTF.sfd` (FontForge SFD format)
+- `src/ConcertOne-Regular-OTF.vfb` (FontLab VFB format)
+
+These formats are not compatible with gftools-builder, which requires `.glyphs`, `.ufo`, or `.designspace` sources. No override config.yaml exists in the google/fonts family directory either.
+
+## Verification
+
+- Repository URL returns HTTP 200
+- Commit hash matches the HEAD of the cached repo
+- The font binary in google/fonts was last modified by a v-metrics hotfix (commit `dc96bd2ff`, May 2024, by Emma Marichal) applied directly to the binary - no upstream source changes
+- No source block exists in the main branch METADATA.pb (pending PR #10270)
+
+## Confidence Level
+
+**High** for repository URL and commit hash. The librefonts repo is the canonical source archive.
+
+**N/A** for config.yaml - the sources are in legacy formats (SFD/VFB) not supported by gftools-builder.
+
+## Open Questions
+
+1. The v-metrics hotfix was applied directly to the binary in google/fonts without corresponding upstream changes. Should this be documented more formally?
+2. Would it be worthwhile to convert the SFD sources to a gftools-builder compatible format?