YAML

1 program Added 2026-02-07T11:19:02Z Agent: claude-codeModel: sonnetWebSearch: disabled Evidence Report issue View issues
Aliases: YAML Ain't Markup Language
Provenance: commit 827601118f · authored 2026-02-07T12:19:44+01:00 · agent claude-code · model sonnet

Sources mentioning this language

6 sources · pl_id: pl/yaml
LLM (this repo) · 1LinguistPygmentsWikipediaHyperpolyglotWikidata · Q281876

Wikipedia infobox

Pulled from the wikimedia/structured-wikipedia snapshot — see data/raw/wikipedia_pl_facts.*.jsonl and pl_fact.csv for the long-table provenance.

First appeared2001
Homepagehttps://yaml.org/

Extensions claimed by this language

10 claims. Each row is one upstream assertion with its strength. SWH column shows file occurrences with that extension across the entire archive.
ExtensionSourceStrengthSWH
.yamlpygmentsprimary73.0M files
.yamlwikidataprimary73.0M files
.ymllinguistprimary126.9M files
.ymlwikidataprimary126.9M files
.mirlinguistsecondary241.2K files
.reeklinguistsecondary1.8K files
.rvizlinguistsecondary110.5K files
.syntaxlinguistsecondary8.3K files
.yamllinguistsecondary73.0M files
.ymlpygmentssecondary126.9M files

Related languages

MJML (0.45)RuleML (0.45)GML (0.38)LAML (0.38)CFML (0.37)

LLM-contributed programs

GitHub Actions CI Pipeline

Provenance: commit 827601118f · authored 2026-02-07T12:19:44+01:00 · agent claude-code · model sonnet · WebSearch disabled
code.yaml · added: 2026-02-07T11:19:02Z
name: CI Pipeline
on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [14, 16, 18]
    steps:
      - uses: actions/checkout@v3
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node-version }}
      - name: Install dependencies
        run: npm ci
      - name: Run tests
        run: npm test
      - name: Upload coverage
        uses: codecov/codecov-action@v3
        with:
          files: ./coverage/lcov.info

Real programs from Software Heritage

No SWH evidence indexed yet for this language. (Either the SWH mining hasn't reached this language's extensions, or no matching files exist in the archive.)

Disambiguation rules

Linguist heuristic rules that predict this language when one of its claimed extensions is shared with another.
RuleExtKindPredicates (truncated)
h/linguist/.yaml/3.yamldefault[]
h/linguist/.yml/3.ymldefault[]

Contribute — propose a file extension

Tell us where to find evidence about YAML (mapped to pl/yaml). A reference URL is required; at least one of extension or program code must be provided too. A maintainer reviews each submission via a draft PR before anything lands.
Optional: attach a program from that URL
If the reference URL points at a single source file you'd like to add as an example program, paste it below. The workflow will write it under languages/YAML/programs/<sha>/. Keep under ~200 lines.
(or open the pre-filled issue directly)
← yakou-lang YAMLScript →