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Untag FR-CAT-13, which no XMP is read or written to satisfy

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FR-CAT-13 asks for standard XMP sidecars read and written — ratings, colour
labels, keywords and hierarchical subjects, title, description, copyright, GPS,
in `xmp:`/`dc:`/`lr:` schemas — so that other tools interoperate. Its one tag
was the module header of `dr-catalog/src/keywords.rs`.

That module stores keywords in SQLite. It names `dc:subject` twice, both times
in prose explaining why a keyword's text is the fact rather than its row id,
which is a good reason to have written it that way and not evidence of an XMP
implementation. Nothing in the tree parses or emits XMP: `dr-export`'s metadata
module writes EXIF and says in its own header that IPTC and XMP are named by
FR-EXP-8 and neither is read.

`dr-preset-xmp` is the crate whose name most invites the mistake. It reads
Lightroom `.xmp` *presets* — develop settings — under FR-DEV-6, and knows
nothing about the metadata schemas FR-CAT-13 is about.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
dtourolle
2026-08-30 10:18:10 +02:00
co-authored by Claude Opus 5
parent 0906c3983f
commit 421a47f1eb
2 changed files with 9 additions and 6 deletions
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core/dr-catalog/src/keywords.rs
+1 -1
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@@ -1,4 +1,4 @@
//! TRACES: FR-CAT-5 | FR-CAT-6 | FR-CAT-13 | NFR-R5 //! TRACES: FR-CAT-5 | FR-CAT-6 | NFR-R5
//! Keywords: the vocabulary, the assignments, and the edits the UI performs. //! Keywords: the vocabulary, the assignments, and the edits the UI performs.
//! //!
//! The read half of this shipped with the catalog and the write half did not. //! The read half of this shipped with the catalog and the write half did not.
docs/outstanding.md
+8 -5
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@@ -277,11 +277,14 @@ well optimised — ETag pruning under FR-NC-4 turns an unchanged 50k library int
gap is narrower than it reads. It is the *first* build against a large remote library that pays, and gap is narrower than it reads. It is the *first* build against a large remote library that pays, and
that is the moment a new user meets. that is the moment a new user meets.
**FR-CAT-13 — XMP interoperability, tagged and not met.** Read and write standard XMP sidecars. The **FR-CAT-13 — XMP interoperability, untagged and not met.** Read and write standard XMP sidecars.
single tag sits on `keywords.rs`, which stores keywords; no XMP is parsed or written anywhere in the Its single tag sat on `keywords.rs`, which stores keywords in the catalog and mentions `dc:subject`
tree, and `dr-export`'s metadata module says so about its own half ("neither is read by `dr-decode` in a comment about what a keyword's text is *for*; no XMP is parsed or written anywhere in the tree,
today"). Listed here rather than silently, because a tag makes a gap invisible and this one is and `dr-export`'s metadata module says so about its own half ("neither is read by `dr-decode`
load-bearing for interoperating with the editors FR-CAT-14 imports from. today"). The tag has been removed — `dr-preset-xmp` is not the counter-example it looks like, being
a reader of Lightroom *presets* under FR-DEV-6, which is a different file and a different purpose.
Listed here rather than silently, because a tag makes a gap invisible and this one is load-bearing
for interoperating with the editors FR-CAT-14 imports from.
--- ---