.lisp
4 claimants
1 primary
2 secondary
unambiguous primary
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.
3.0M
total files
801.5K
first seen 2021–2025 (26.8%)
2018
median year (half its files since)
Case variants in archive: .lisp (3.0M), .LISP (1.6K), .Lisp (105) — aggregated above.
Attribution status
This extension is attributed to Lisp as primary by 1 authoritative claim.
Authoritative sources: ✓ Linguist △ Pygments · secondary ✗ Wikidata · no claim △ Wikipedia · secondary
Claimants (6)
Languages that list
.lisp among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Lisp | linguist | primary |
| Lisp | pygments | secondary |
| lisp | pygments | secondary |
| newLISP | linguist | secondary |
| Lisp | wikipedia | proposed |
| MACLISP | wikipedia | proposed |
Disambiguation rules (2)
Linguist heuristics that decide, by content, which language a
.lisp file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.lisp/0 | Lisp | predicates | [{"kind": "any", "regexes": ["^\\s*\\((?i:defun|in-package|defpackage) "]}] | |
h/linguist/.lisp/1 | newLISP | predicates | [{"kind": "any", "regexes": ["^\\s*\\(define "]}] |
SWH-mined examples (0)
No archived examples for .lisp in our local mirror yet.