.cairo

2 claimants 2 primary 0 secondary shared primary (2)

SWH popularity

From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.

63.6K
total occurrences
23.6K
since 2019 (37.2%)
2003–2023
years active

Case variants in archive: .cairo (63.6K), .Cairo (13), .CAIRO (1) — aggregated above.

Attribution status

This extension is attributed to Cairo; Cairo Zero as primary by 2 authoritative claims.

Authoritative sources: ✓ Linguist ✗ Pygments · no claim ✗ Wikidata · no claim ✗ Wikipedia · no claim

Disagree or have a correction? Open a labelling issue.

Claimants (2)

Languages that list .cairo among their extensions. Strength reflects whether the upstream source treated it as their primary extension.
LanguageSourceStrength
Cairolinguistprimary
Cairo Zerolinguistprimary

Disambiguation rules (2)

Linguist heuristics that decide, by content, which language a .cairo file actually is.
RulePredictsKindPredicates (truncated)
h/linguist/.cairo/0Cairo Zeropredicates[{"kind": "any", "regexes": ["(^(\\s*)%lang(\\s+)([A-Za-z0-9_]+))|(^(\\s*)%builtins(\\s+)([A-Za-z0-9_]+\\s*)*$)|(^(\\s*)from(\\s+)starkware\\.(cairo|starknet)\\.([A-Za-z0-9_.\\s]+?)import)|(,\\s*ap\\+
h/linguist/.cairo/1Cairodefault[]

SWH-mined examples (0)

No archived examples for .cairo in our local mirror yet.

Need an archived example for this extension?
No verbatim file with extension .cairo in our local SWH mirror yet. Submit a sample-mining request and a maintainer will run swh_extension_mining.py against the live archive for this extension; samples land here once the run completes.
(or open the pre-filled issue directly)