Please add me to the co-maintainer(s) module.

The project page says they are looking for co-maintainer. This does not mean that the owner (Dave Reid) is going to hand out co-maintainership to anyone. The person taking over need to show that he/she has some interest in maintaining this project (as opposed to someone trying to bag a Drupal project co-maintainer just to have it on their CV in order to impress clients).

To show that you have a genuine interest in contributing to this project, you should start out by posting patches to the project's issue queue, and you should demonstrate that you have an ability to get those patches reviewed tested and approved by the community (RTBC).

In some cases, you will be added as a co-maintainer after demonstrating: 1) That you have a genuine interest in maintaining the project; 2) are capable of creating code that is secure, good, and follow community guidelines – but that is up to the owner.

But I don't think any responsible project owner will add someone as co-maintainer without seeing some code.

pifagor wrote:

Check out my profile and your questions will be out of date.

Of course I already did. Quantity is not the same as quality.

pifagor wrote:

The programmer wastes his own time for which he does not receive funds. It should bring respect, not a negative reaction.

I agree that we must to respect each other. However, you cannot request that I check out your profile, and then claim that it is a sign of disrespect that I honour such a request.

pifagor wrote:

Yes, I agree that I have to contribute to the module. I will do it.

Great! I think that is the procedure: Contribute first, then request to be added as co-maintainer (and not the other way around).