Small, easy to use, easy to install tool to lint your git mailmap

• Mailmap file (.mailmap) must exist
• Mailmap must be sorted
• All authors in git history must be mapped
• All authors must conform to: Name FamilyName <[email protected]>
• Exclude file (.mailmap-exclude). Optional. .mailmap-exclude can contain a list of regular expressions (or be empty) to exclude from the .mailmap file
• --exclude or -e argument. Optional. mailmap-linter --exclude 'regex' If the excludes aren't too many then use --exclude instead of the exclude file, ex: mailmap-linter --exclude '^.* <.*[email protected]>$'

Given you've installed Nix (https://nixos.org/nix/download.html)

Run the following command:

$ nix-env -i -f https://github.com/kamadorueda/mailmap-linter/archive/master.tar.gz

Run from the root of the repository that you want to lint:

$ mailmap-linter

Exclude with regex:

$ mailmap-linter --exclude '...'

Use Nixos/nix as the base image for your Job: https://hub.docker.com/r/nixos/nix

Then install and use the same commands for the local build

$ mailmap-linter
[INFO] Verifying if .mailmap exists
[INFO] Verifying if .mailmap-exclude exists
[INFO] Computing contributors
[INFO] Reading current .mailmap
[INFO] Reading current .mailmap-exclude
[INFO] Verifying .mailmap format
[INFO] Verifying that every author is in the .mailmap
  [INFO] Verifying: GitHub <[email protected]>
  [INFO] Excluded: GitHub <[email protected]>
  [INFO] Verifying: Kevin Amado <[email protected]>
  [INFO] Verifying: Robin Quintero <[email protected]>
  [INFO] Verifying: Timothy DeHerrera <[email protected]>
[INFO] Verifying that .mailmap is sorted
  [INFO] OK