Thank you Mark and Gavin for your efforts. What prompted my inquiry was the Extended Choice Parameter plugin.
The plugin help actually points to:
Which would actually redirect to:
Looking at the plugin in the Plugins Center, it points to:
Documentation for this plugin is here: https://wiki.jenkins.io/display/JENKINS/Extended+Choice+Parameter+plugin
And there’s no usage documentation on the GitHub README, which leaves the user with nowhere to reference.
I’m sure there are also other plugins whose documentation is lost in the ether.
I totally get it’s up to the community supporting the plugin to maintain, document and keep it up to date with the Jenkins infrastructure and standards. But at the same time, the average user will just click on the help, get a “page not found” and be stumped.
Some sort of redirect from wiki.jenkins-ci.org and wiki.jenkins.io to would be of tremendous help I think.
As the source content is no longer accessible to the average user (or the plugin maintainers ?) , users are also unable to contribute to the Wiki to GitHub migration.