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Structured git log output

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git-lg

git-lg is like git log but with structured output.

Linux build status

If the binary is in your path you can run simply run git lg as git will automatically pick it up as a subcommand. Use the GIT_DIR=/path/to/.git env to control which repo to use.

While one could use git log pretty formatting like git log --pretty=format='%an,aI,%s', parsing the output can be cumbersome, possibly having to deal with illegal sequences. This tool aims to be a thin layer to allow easy parsing with other tools like jq: https://stedolan.github.io/jq/.

Currently the only output format is an array of commit objects, with only the following fields:

[
  {
    "author_name": "kennytm",
    "author_date": "2019-02-05T15:29:17",
    "committer_name": "GitHub",
    "committer_date": "2019-02-05T15:29:17",
    "subject": "Rollup merge of #58169 - boringcactus:patch-1, r=alexcrichton",
    "body": "\nUpdate contributor name in .mailmap\n\nfollowing up on email correspondence with @steveklabnik\n"
  }
]

Example:

$ git clone https://github.com/rust-lang/rust /tmp/rust
$ export GIT_DIR=/tmp/rust/.git
$ git lg | jq -r '.[].author_name' | sort | uniq -c | sort -nrk1 | head
  14399 bors
   5503 Brian Anderson
   4791 Alex Crichton
   3834 Niko Matsakis
   2828 Patrick Walton
   2228 Graydon Hoare
   1980 Manish Goregaokar
   1757 Guillaume Gomez
   1689 kennytm
   1671 Steve Klabnik

Dual-licensed under MIT or the UNLICENSE.

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