.lsp
4 claimants
3 primary
1 secondary
shared primary (3)
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
199.1K
total occurrences
63.7K
since 2019 (32.0%)
1980–2023
years active
Case variants in archive: .lsp (192.2K), .LSP (6.9K), .Lsp (2), .LSp (2) — aggregated above.
Attribution status
This extension is attributed to newLISP; nl; Nyquist as primary by 3 authoritative claims.
Authoritative sources: △ Linguist · secondary ✓ Pygments ✓ Wikidata · Q1788197 △ Wikipedia · secondary
Claimants (6)
Languages that list
.lsp among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| newLISP | pygments | primary |
| nl | pygments | primary |
| Nyquist | wikidata | primary |
| CL | linguist | secondary |
| newLISP | linguist | secondary |
| CL | wikipedia | proposed |
Wikidata says… (4)
File formats, image formats, audio codecs and other non-PL
entities that claim
.lsp 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 |
|---|---|---|---|---|---|
| AutoCAD Protected LISP code Q105861081 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| AutoLISP File Q47922320 file format | file format | — | — | — | Use as new PL ↗ |
| Lisp Program Source Code File Q111432414 file format | file format | — | — | — | Use as new PL ↗ |
Disambiguation rules (2)
Linguist heuristics that decide, by content, which language a
.lsp file actually is.| Rule | Predicts | Kind | Predicates (truncated) |
|---|---|---|---|
h/linguist/.lsp/0 | CL | predicates | [{"kind": "any", "regexes": ["^\\s*\\((?i:defun|in-package|defpackage) "]}] |
h/linguist/.lsp/1 | newLISP | predicates | [{"kind": "any", "regexes": ["^\\s*\\(define "]}] |
SWH-mined examples (0)
No archived examples for .lsp in our local mirror yet.