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`.uc`

2 claimants 2 primary 0 secondary shared primary (2)

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.

643.8K

total files

247.3K

first seen 2021–2025 (38.4%)

2019

median year (half its files since)

Case variants in archive: .uc (642.6K), .UC (622), .Uc (487), .uC (102) — aggregated above.

Attribution status

This extension is attributed to ucode; UnrealScript 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 .uc among their extensions. Strength reflects whether the upstream source treated it as their primary extension.

Language	Source	Strength
ucode	linguist	primary
UnrealScript	linguist	primary

Disambiguation rules (2)

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

Rule	Predicts	Kind	Predicates (truncated)	Measured on SWH
`h/linguist/.uc/0`	ucode	predicates	`[{"kind": "any", "regexes": ["^#!.\\bucode\\b", "^\\s['\"]use strict['\"];", "^[ \\t](?:export\|import)\\b", "\\b(?:require\|include)\\s\\(\\s['\"]", "^\\slet\\s+\\w+", "\\b(?:printf\|sprintf)\\s*\`
`h/linguist/.uc/1`	UnrealScript	default	`[]`

SWH-mined examples (2)

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.

UnrealScript (2) — 2 via unique-primary

DruidLinkTurretSwivel.uc · 173 B · seen 306× in SWH

predicted: UnrealScript via unique-primary

swh:1:cnt:58406181e8da7f8750e4c8c65dab2515ea138f1a;origin=https://github.com/DCUT2004/DEKRPG;anchor=swh:1:rev:4dacb95706f964bc367cbdd79480976aaa17157b;path=/Classes/DruidLinkTurretSwivel.uc

Open in SWH · Raw bytes

DEKPROJ_Sentinel_Laser.uc · 103 B · seen 304× in SWH

predicted: UnrealScript via unique-primary

swh:1:cnt:3c64668946fd76068aa1015055feaa1f4635eea8;origin=https://github.com/DCUT2004/DEKRPG;anchor=swh:1:rev:4dacb95706f964bc367cbdd79480976aaa17157b;path=/Classes/DEKPROJ_Sentinel_Laser.uc

Open in SWH · Raw bytes