.peg
1 claimant
1 primary
0 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.
32.6K
total files
9.0K
first seen 2021–2025 (27.7%)
2017
median year (half its files since)
Case variants in archive: .peg (32.5K), .PEG (29), .Peg (5), .PeG (1) — aggregated above.
Attribution status
This extension is attributed to peg as primary by 1 authoritative claim.
Authoritative sources: ✗ Linguist · no claim ✓ Pygments ✗ Wikidata · no claim ✗ Wikipedia · no claim
Claimants (1)
Languages that list
.peg among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| peg | pygments | primary |
Wikidata says… (2)
File formats, image formats, audio codecs and other non-PL
entities that claim
.peg 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 |
|---|---|---|---|---|---|
| Parsing Expression Grammar file format Q130466597 file format | file format | — | text/x-peg | — | Use as new PL ↗ |
| Red Faction 2 game data Q105865167 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .peg in our local mirror yet.