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`.nr`

2 claimants 1 primary 1 secondary unambiguous primary

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.

57.1K

total files

52.2K

first seen 2021–2025 (91.3%)

2024

median year (half its files since)

Case variants in archive: .nr (56.4K), .NR (718), .Nr (2) — aggregated above.

Attribution status

This extension is attributed to Noir as primary by 1 authoritative claim.

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 .nr among their extensions. Strength reflects whether the upstream source treated it as their primary extension.

Language	Source	Strength
Noir	linguist	primary
Roff	linguist	secondary

Disambiguation rules (2)

Linguist heuristics that decide, by content, which language a .nr file actually is.

Rule	Predicts	Kind	Predicates (truncated)	Measured on SWH
`h/linguist/.nr/0`	Roff	predicates	`[{"kind": "any", "regexes": ["^\\."]}]`
`h/linguist/.nr/1`	Noir	default	`[]`

SWH-mined examples (1)

Real archived programs with this extension, byte-verified against the SWH archive, grouped by predicted language and by how the prediction was made. Useful for deciding what this extension actually is when the attribution is uncertain.

Roff (1) — 1 via Linguist heuristic

rubin.nr · 9167 B · seen 2× in SWH

predicted: Roff via heuristic

swh:1:cnt:63ea142127ce9d0414832369040e4c47599a3b9f;origin=https://github.com/bpr97050/DEMOS;anchor=swh:1:rev:13f10340e432b98cbeacdcc24d0254c1f7393e55;path=/rubin/doc/demos/rubin.nr

Open in SWH · Raw bytes