.e
3 claimants
3 primary
0 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.
979.7K
total occurrences
107.3K
since 2019 (11.0%)
1970–2023
years active
Case variants in archive: .e (967.9K), .E (11.8K) — aggregated above.
Attribution status
This extension is attributed to E; Eiffel; Eiffel; Euphoria as primary by 4 authoritative claims.
Claimants (6)
Languages that list
.e among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| E | linguist | primary |
| Eiffel | linguist | primary |
| Eiffel | pygments | primary |
| Euphoria | linguist | primary |
| Eiffel | wikipedia | proposed |
| Euphoria | wikipedia | proposed |
Wikidata says… (4)
File formats, image formats, audio codecs and other non-PL
entities that claim
.e 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 |
|---|---|---|---|---|---|
| e Q5324777 hardware verification language | hardware verification language | — | — | — | Use as new PL ↗ |
| Eiffel Source Code File Q126817617 file format | file format | — | text/x-eiffel | — | Use as new PL ↗ |
| Exodus-II mesh file Q135527264 file format | file format | — | — | — | Use as new PL ↗ |
Disambiguation rules (3)
Linguist heuristics that decide, by content, which language a
.e file actually is.| Rule | Predicts | Kind | Predicates (truncated) |
|---|---|---|---|
h/linguist/.e/0 | E | predicates | [{"kind": "any", "regexes": ["^\\s*(def|var)\\s+(.+):=", "^\\s*(def|to)\\s+(\\w+)(\\(.+\\))?\\s+\\{", "^\\s*(when)\\s+(\\(.+\\))\\s+->\\s+\\{"]}] |
h/linguist/.e/1 | Eiffel | predicates | [{"kind": "any", "regexes": ["^\\s*\\w+\\s*(?:,\\s*\\w+)*[:]\\s*\\w+\\s", "^\\s*\\w+\\s*(?:\\(\\s*\\w+[:][^)]+\\))?(?:[:]\\s*\\w+)?(?:--.+\\s+)*\\s+(?:do|local)\\s", "^\\s*(?:across|deferred|elseif|en |
h/linguist/.e/2 | Euphoria | predicates | [{"kind": "any", "regexes": ["^\\s*namespace\\s", "^\\s*(?:public\\s+)?include\\s", "^\\s*(?:(?:public|export|global)\\s+)?(?:atom|constant|enum|function|integer|object|procedure|sequence|type)\\s"]}] |
SWH-mined examples (0)
No archived examples for .e in our local mirror yet.