Home · Extensions · .xmcd

`.xmcd`

0 claimants 0 primary 0 secondary

SWH popularity

Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.

17.3K

total files

2.4K

first seen 2021–2025 (13.8%)

2014

median year (half its files since)

Help label this extension

No PL in our taxonomy claims this extension. If you know what it's used for, fill the form below. Vocabulary reference: docs/extension_labels.md.

Label * If label has <...>, fill it here (e.g. for pl/<id> type rust). For multi-PL submissions, enter several pl/<id> separated by commas. Friendly name (optional) Reference URL (optional, but recommended — spec / Wikipedia / vendor) Evidence / notes *

— or, if the button is blocked, use the link just below:

(fill the form to enable this link)

What happens after I submit?

A new GitHub issue is opened in this repo with your form contents in a structured YAML block and the label ext-review. Your GitHub login becomes the annotator; the issue's created_at is the submission timestamp.
A curator script (tools/process_extension_labels.py) fetches all ext-review issues and writes their parsed contents into data/derived/extension_labels.csv with curator_status="new". Until this script runs, your submission lives only as the GitHub issue.
Your submission shows up on the curator triage page (/review/curator/) under "new". Maintainers review the issue (comment, ask for clarification, accept or reject) and edit extension_labels.csv to set curator_status to accepted.
For pl/<id> labels, build_pl_taxonomy.py promotes accepted labels into ext_claim.csv with source="manual_review:<your-login>" and strength="proposed". The next site rebuild then shows your claim on this extension's page and on the language's page.
Friendly-name + reference-URL labels (e.g. binary:image for .png) are not promoted into ext_claim.csv (they aren't PL claims) but are surfaced on this page's "Prior labels" table so anyone landing here sees them next to the auto-detected category.

In short: submitting opens an issue (provenance), and a small ingestion pipeline turns issues into rows the site renders. The loop is currently manual (the curator script must be run by a maintainer); GitHub Actions could automate it on each new issue.

Wikidata says… (1)

File formats, image formats, audio codecs and other non-PL entities that claim .xmcd on Wikidata (property P1195) or in the Wikipedia infobox. Source: data/derived/external_extension_index.csv. Click Use as new PL on any row to open the Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata URL, and this extension — one submission creates the PL + claim.

Right entry isn't listed? Add manually ↗

Format	Class (Wikidata `P31`)	Suggested label	MIME	Notes	Action
Mathcad Document, XML file format Q50288128 file format	file format	—	`—`	—	Use as new PL ↗

SWH-mined examples (0)

No claimants, heuristics, or SWH samples indexed for .xmcd yet.