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https://github.com/manicmaniac/danger-mailmap
A Danger plugin to check if .mailmap has a canonical name of author and committer.
https://github.com/manicmaniac/danger-mailmap
danger-plugin git mailmap ruby
Last synced: 4 months ago
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A Danger plugin to check if .mailmap has a canonical name of author and committer.
- Host: GitHub
- URL: https://github.com/manicmaniac/danger-mailmap
- Owner: manicmaniac
- License: mit
- Created: 2022-09-07T18:44:51.000Z (almost 2 years ago)
- Default Branch: master
- Last Pushed: 2024-02-28T23:18:45.000Z (4 months ago)
- Last Synced: 2024-02-29T00:27:55.125Z (4 months ago)
- Topics: danger-plugin, git, mailmap, ruby
- Language: Ruby
- Homepage: https://www.rubydoc.info/gems/danger-mailmap/0.1.0
- Size: 169 KB
- Stars: 0
- Watchers: 3
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Lists
- awesome-danger - danger-mailmap - A Danger plugin to check if .mailmap has a canonical name of author and committer. (Plugins / Ruby (danger))
README
# danger-mailmap
[](https://github.com/manicmaniac/danger-mailmap/actions/workflows/test.yml)
[](https://codeclimate.com/github/manicmaniac/danger-mailmap/maintainability)
[](https://codeclimate.com/github/manicmaniac/danger-mailmap/test_coverage)
[](https://rubygems.org/gems/danger-mailmap)
A Danger plugin to check if .mailmap has a canonical name of author and committer.
## Installation
```sh
gem install danger-mailmap
```
Or write the following code in your Gemfile.
```ruby
gem 'danger-mailmap'
```
## Usage
The easiest way to use is just add this to your Dangerfile:
```ruby
mailmap.check
```
If your repository has a mailmap file located in the place other than `.mailmap`, you can pass the path as argument.
```ruby
mailmap.check '/path/to/mailmap'
```
If you want `danger-mailmap` to ignore a particular user regardless of mailmap, set `allowed_patterns`.
```ruby
mailmap.allowed_patterns = [
/.+@(users\.noreply\.)?github\.com/,
'[email protected]'
]
mailimap.check
```
## What is mailmap?
`mailmap` is a file that maps Git author and committer names and/or email addresses.
See `man 5 gitmailmap` or https://git-scm.com/docs/gitmailmap for the detail.
If you encountered warnings like *[email protected] is not included in .mailmap*, basically you have 4 options.
1. Rewrite author and/or committer of each commit in the pull request.
2. Add new entry to mailmap.
3. Add new allow-list entry to Dangerfile.
4. Do nothing and remain everything as-is.
If you don't want to continue using `[email protected]`, `1.` is the most preferable option.
See [How to rewrite author and/or committers](#how-to-rewrite-author-andor-committers) section.
If it is the first time for you to contribute to the repository, you may want to choose the option `2.`.
Just add `Your Name ` to the mailmap file and commit it.
If `[email protected]` is an email address of a bot user and it can vary, you can add it to allow-list.
For example, [renovate](https://github.com/renovatebot/renovate) bot has variable email like `29139614+renovate[bot]@users.noreply.github.com`.
See [Usage](#usage) section to know how to use `mailmap.allowed_patterns`.
Lastly, when you clearly know what you are doing or you have your teammates' permission, the option `4.` is obviously the most easiest way.
## How to avoid making commits with unintended author/committer email
You need to tell Git to use the correct name and email like the following:
```sh
git config --global user.email '[email protected]'
git config --global user.name 'Correct Name'
```
If you have multiple names or emails and changes them by repository, you may want to set name and email to the specific repository.
Use `--global` option instead of `--local` in this case.
```sh
git config --local user.email '[email protected]'
git config --local user.name 'Correct Name'
```
## How to rewrite author and/or committers
You can rewrite existing commits' author and/or committer in a pull request with `git filter-branch` command.
Let's say that you made a pull request with `wip` branch based on `master` branch and `danger-mailmap` complains *`[email protected]` is not included in mailmap*. You want to change `[email protected]` to `[email protected]` with the proper name `New One`.
In this case, the following script works well.
```sh
git filter-branch --env-filter '
if [ "$GIT_AUTHOR_EMAIL" = "[email protected]" ]; then
GIT_AUTHOR_EMAIL="[email protected]"
GIT_AUTHOR_NAME="New One"
fi
if [ "$GIT_COMMITTER_EMAIL" = "[email protected]" ]; then
GIT_COMMITTER_EMAIL="[email protected]"
GIT_COMMITTER_NAME="New One"
fi
' --tag-name-filter cat master...wip
```
Perhaps you may want to undo the changes.
Don't worry, `git filter-branch` automatically backups the original history.
The following command rollbacks the previous changes.
```sh
git reset --hard original/refs/heads/wip
```
By default, `git filter-branch` does not run when a backup for the current branch exists.
You can delete it by running:
```sh
git update-ref -d refs/original/refs/heads/wip
```
Or just pass `--force` option to the next `git filter-branch` command to overwrite existing backups.
See [the official document](https://git-scm.com/docs/git-filter-branch) for other examples of `git filter-branch`.
## Development
1. Clone this repo
2. Run `bundle install` to setup dependencies.
3. Run `bundle exec rake spec` to run the tests.
4. Use `bundle exec guard` to automatically have tests run as you make changes.
5. Make your changes.