The two ways to contribute to MIMWAL Code are: Fork the Repository or Submit an Issue.
Fork a copy of the MIM Repo, make the changes in your fork and send a pull request. Forking a repository allows you to freely experiment with changes without affecting the original project. See Fork A Repo help article for more information.
When developing the code, make sure that you instrument your code adequately. And what's better way to know whether it's adequate or not than not using the debugger in the first place!! Not installing Visual Studio on your MIM server in a great way to avoid temptation to use debugger.
As for the coding style, it's simple. Download and install StyleCop and let it guide you. Note: At the time of writing, StyleCop does not support Visual Studio 2015 so you'll need to use Visual Studio 2013.
While code acceptance for a bug fix or a minor enhancement like adding a new function is likely to be very straightforward, the code for a major new feature such as a new activity will be accepted only if there is consensus among ALL project admins. Any proposal for a new feature that requires extension of MIM schema will be rejected. Any proposal that has serious backward compatibility considerations is unlikely to get accepted. A classic example of this is that in contrast to specification of FIM string functions such as Mid, all WAL string functions expect a zero-based index. For any features that you need for your project, but will not make it to the MIMWAL code base in time (or ever), the immediate best way forward is to keep your extension in a separate DLL. See Custom Activity Development Wiki for more information.
To summarise, the MIMWAL is intended to be a set of building block activities that are generic not specific. Any extension considered to be added to the core library should be applicable in multiple customer scenarios and not limited to a very specific or narrow use case or a specific customer environment.
You can also submit an issue. Use the Issues tab to create a new issue.
To contribute to the MIMWAL wiki, please submit an Issue. Use the Issues tab to create a new issue.
Your edits will be reviewed and accepted if they align with the recommended practices / product architecture and are not in conflict with prior lessons learnt by the community. Any other edits may still be accepted with proper caveats or special considerations called out appropriately.