karlatamilupright: add source metadata from googlefontdirectory-hg

Repo: https://github.com/googlefonts/googlefontdirectory-hg
Commit: 52f780bc9d197280a9f430574e179a5f233c56b6
source block added to METADATA.pb

Assisted by an AI agent (Claude Opus 4.6)

diff --git a/ofl/karlatamilupright/METADATA.pb b/ofl/karlatamilupright/METADATA.pb
index f4511e8def06105b7eb0d0862c5b180bbc40de57..ae78893ebd9e6fa627b5fae4211ca2deeeb77752 100644 (file)
--- a/ofl/karlatamilupright/METADATA.pb
+++ b/ofl/karlatamilupright/METADATA.pb
@@ -23,3 +23,7 @@ fonts {
 }
 subsets: "tamil"
 primary_script: "Taml"
+source {
+  repository_url: "https://github.com/googlefonts/googlefontdirectory-hg"
+  commit: "52f780bc9d197280a9f430574e179a5f233c56b6"
+}

diff --git a/ofl/karlatamilupright/upstream_info.md b/ofl/karlatamilupright/upstream_info.md
index f6e4d600aa19eca9b56c7eeb399c3067de27695f..38ceb421218d80898860997287db7e523234dedf 100644 (file)
--- a/ofl/karlatamilupright/upstream_info.md
+++ b/ofl/karlatamilupright/upstream_info.md
@@ -1,36 +1,43 @@
 # Investigation: Karla Tamil Upright
 
-## Summary
+**Model**: Claude Opus 4.6
+
+## Source Repository
 
 | Field | Value |
 |-------|-------|
-| Family Name | Karla Tamil Upright |
-| Slug | karla-tamil-upright |
-| License Dir | ofl |
-| Repository URL | unknown |
-| Commit Hash | unknown |
-| Config YAML | none |
-| Status | missing_url |
-| Confidence | LOW |
+| **Repository** | [https://github.com/googlefonts/googlefontdirectory-hg](https://github.com/googlefonts/googlefontdirectory-hg) |
+| **Commit** | `52f780bc9d197280a9f430574e179a5f233c56b6` |
+| **Source path** | `karlatamilupright/src/` |
+| **Buildable** | No — legacy formats only (.vfb) with VOLT pipeline |
+
+The font sources are in the **googlefontdirectory-hg** monorepo, a git mirror of the original Google Code Mercurial repository (`code.google.com/p/googlefontdirectory`) that was the canonical host for Google Fonts from 2010 to 2013.
+
+### Source files (6)
 
-## Source Data (METADATA.pb)
+| File | Format | Notes |
+|------|--------|-------|
+| `KarlaUpright-MM.vfb` | FontLab VFB (Multiple Master) | Proprietary format, not buildable with gftools |
+| `InVOLT_ImportProject_1to272.vtp` | VOLT project | Microsoft VOLT table data |
+| `KarlaUpright-Bold-InVOLT.ttf` | TrueType binary | Post-VOLT processing, not a design source |
+| `KarlaUpright-Bold-PreVOLT.ttf` | TrueType binary | Pre-VOLT processing, not a design source |
+| `KarlaUpright-Regular-InVOLT.ttf` | TrueType binary | Post-VOLT processing, not a design source |
+| `KarlaUpright-Regular-PreVOLT.ttf` | TrueType binary | Pre-VOLT processing, not a design source |
 
-```
-No source block
-```
+The source directory contains a VFB Multiple Master file (the original design source) alongside TTF binaries at various stages of the Microsoft VOLT processing pipeline. The VFB file is proprietary FontLab format, not compatible with gftools-builder.
+
+Both Karla Tamil families (Inclined and Upright) were created by Jonathan Pinhorn in 2011-2012 for Tamil script support and share a similar source structure.
 
 ## Investigation
 
-The METADATA.pb for Karla Tamil Upright has no `source` block at all. The font was added in the "Initial commit" (`90abd17b4`) of the google/fonts repository, which predates the source metadata tracking system.
+The METADATA.pb has no `source` block. The font was added in the initial commit (`90abd17b4`) of the google/fonts repository, which predates the source metadata tracking system.
 
 The copyright notice reads: "Copyright (c) 2011-2012, Jonathan Pinhorn (jonpinhorn.typedesign@gmail.com), with Reserved Font Names 'Karla'"
 
-The cached repository at `upstream_repos/fontc_crater_cache/librefonts/karlatamilupright` contains only TTX/VFB source files (not gftools-builder compatible). The sources are legacy font engineer tools similar to its sister family Karla Tamil Inclined.
-
-There is no `config.yaml` in the upstream repo, and the sources are not in a gftools-builder compatible format. Both Karla Tamil families were created by Jonathan Pinhorn in 2011-2012 for Tamil script support.
+A cached repository exists at `upstream_repos/fontc_crater_cache/librefonts/karlatamilupright` containing similar TTX/VFB source files. This librefonts repository is an archival mirror, not the original design source repository.
 
-The upstream source repository is not publicly known and has not been found in available caches.
+The upstream source repository for Jonathan Pinhorn's Karla Tamil fonts is not publicly known.
 
 ## Conclusion
 
-The font is an old font from 2012 with no tracked upstream repository. The librefonts cache contains only a mirror of the binary TTFs with TTX dumps, not the original source files. No `config.yaml` is possible with these sources. This family shares the same situation as Karla Tamil Inclined and needs further investigation to find the original upstream repository if one exists.
+The googlefontdirectory-hg monorepo contains original design sources in legacy VFB Multiple Master format with a VOLT-based OpenType layout pipeline. These are not buildable with gftools-builder. No upstream GitHub repository is known for this family.