About once a week a newcomer finds my GitHub project, asks "Is there an issue that nobody works on and that I could fix?", fixes it, then disappears forever. Yesterday two newcomers fixed the same issue independently, which resulted in wasted time and frustration. I want to prevent that from happening again. I have set up a Wiki page explaining how to see the issues that are currently NOT assigned:
Go to https://github.com/commons-app/apps-android-commons/issues?utf8=%E2%9C%93&q=is%3Aopen%20is%3Aissue%20no%3Aassignee and choose an issue that does NOT have the "assigned" label.
How to make this instruction shorter by including in the URL the fact that issues with the "assigned" label should be ignored?
Note: Apparently I can only assign issues to people who belong to my organization. That's why I had to create the "assigned" tag.