.nclDistinct 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.
Case variants in archive: .ncl (128.2K), .NCL (49) — aggregated above.
This extension is attributed to NCL; Nickel as primary by 4 authoritative claims.
.ncl among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| NCL | linguist | primary |
| NCL | pygments | primary |
| Nickel | linguist | primary |
| Nickel | pygments | primary |
| gerber-image | linguist | secondary |
| Text | linguist | secondary |
| xml | linguist | secondary |
.ncl 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.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| NCL file Q130363500 file format | file format | — | text/ncl | — | Use as new PL ↗ |
.ncl file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.ncl/0 | xml | predicates | [{"kind": "any", "regexes": ["^\\s*<\\?xml\\s+version"]}] | |
h/linguist/.ncl/1 | gerber-image | predicates | [{"kind": "any", "regexes": ["^[DGMT][0-9]{2}\\*(?:\\r?\\n|\\r)"]}] | |
h/linguist/.ncl/2 | Nickel | predicates | [{"kind": "any", "regexes": ["^let(?:\\srec)?(?:\\s[a-zA-Z_][a-zA-Z0-9_]*)?", "^import\\s\"[^\"]+\"\\s+as\\s", "std\\.[a-zA-Z_][a-zA-Z0-9_]*\\."]}] | |
h/linguist/.ncl/3 | Text | predicates | [{"kind": "any", "regexes": ["THE_TITLE"]}] | |
h/linguist/.ncl/4 | NCL | predicates | [{"kind": "any", "regexes": ["^load \"", "^begin$", "[0-9]\\.$", "^;"]}] |