.ls
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.
304.5K
total files
48.7K
first seen 2021–2025 (16.0%)
2016
median year (half its files since)
Case variants in archive: .ls (300.6K), .LS (3.9K), .Ls (7) — aggregated above.
Attribution status
This extension is attributed to LiveScript; loomscript as primary by 4 authoritative claims.
Claimants (5)
Languages that list
.ls among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| LiveScript | linguist | primary |
| LiveScript | pygments | primary |
| loomscript | linguist | primary |
| loomscript | pygments | primary |
| LiveScript | wikipedia | proposed |
Wikidata says… (4)
File formats, image formats, audio codecs and other non-PL
entities that claim
.ls 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 |
|---|---|---|---|---|---|
| Lightscape Solution file Q112661274 file format | file format | — | — | — | Use as new PL ↗ |
| LightWave LScript File Q112661259 file format | file format | — | — | — | Use as new PL ↗ |
| Links LS game data archive Q105861678 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
Disambiguation rules (2)
Linguist heuristics that decide, by content, which language a
.ls file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.ls/0 | loomscript | predicates | [{"kind": "any", "regexes": ["^\\s*package\\s*[\\w\\.\\/\\*\\s]*\\s*\\{"]}] | |
h/linguist/.ls/1 | LiveScript | default | [] |
SWH-mined examples (0)
No archived examples for .ls in our local mirror yet.