mapstructure

Recorded histories: mitchellh/mapstructure and its fork go-viper/mapstructure

A small Go library (decoding generic maps into structs, MIT license) and the community fork that continued it after the original was archived. They are the second demo language of make demo and its cross-repository dedupe case: the fork's history contains every commit of the original, plus its own.

File	Repository	Head	Commits	File entries
mitchellh.jsonl.gz	https://github.com/mitchellh/mapstructure (archived)	8508981c8b6c964e6986dd8aa85490e70ce3c2e2 (2023-12-16)	236	364
go-viper.jsonl.gz	https://github.com/go-viper/mapstructure	52aa5c6dc1d27226460807054ca2107b2d54fb2d (2026-01-27)	374	589

Both are non-merge histories recorded with:

git clone https://github.com/mitchellh/mapstructure mitchellh
commitminer record mitchellh --rev 8508981c8b6c964e6986dd8aa85490e70ce3c2e2 \
  --repo-name mitchellh/mapstructure --url https://github.com/mitchellh/mapstructure \
  --out examples/mapstructure/mitchellh.jsonl.gz
git clone https://github.com/go-viper/mapstructure go-viper
commitminer record go-viper --rev 52aa5c6dc1d27226460807054ca2107b2d54fb2d \
  --repo-name go-viper/mapstructure --url https://github.com/go-viper/mapstructure \
  --out examples/mapstructure/go-viper.jsonl.gz

make verify-recording repeats those steps from GitHub and checks that both results match these files byte for byte. What a recording holds is described in ../tomli/README.md: per commit the sha, parents, author date and message, and per changed file its path, line counts, content signals and patch measurements, with one 64-bit hash per hunk. No file contents, patch text, author or committer fields.

mapstructure is Copyright (c) 2013 Mitchell Hashimoto and distributed under the MIT license; the license text (the same in both repositories) is in LICENSE next to this file. The commit messages in the recordings are the two projects'.