.fDistinct 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: .f (2.4M), .F (1.2M) — aggregated above.
This extension is attributed to filebench-wml; Forth; fortran as primary by 4 authoritative claims.
.f among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| filebench-wml | linguist | primary |
| Forth | wikidata | primary |
| fortran | linguist | primary |
| fortran | wikidata | primary |
| Forth | linguist | secondary |
.f 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 |
|---|---|---|---|---|---|
| Fixed-format Fortran source Q111721131 file format | file format | — | — | — | Use as new PL ↗ |
| Freeze compressed data (v1.x) Q105855227 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| Freeze compressed data (v2.x) Q105855520 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
.f file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.f/0 | Forth | predicates | [{"kind": "any", "regexes": ["^: "]}] | |
h/linguist/.f/1 | filebench-wml | predicates | [{"kind": "any", "regexes": ["flowop"]}] | |
h/linguist/.f/2 | fortran | predicates | [{"kind": "any", "regexes": ["^(?i:[c*][^abd-z]| (subroutine|program|end|data)\\s|\\s*!)"]}] |