Add tag comparison

[TheTechRobo]

Description

When I click on "x commits to master since this release" in a Gitea release, it isn't a link. When I compare two branches but replace a branch name with the tag, it says everything is up-to-date even though 22 commits have been pushed since. I don't think this is a bug, so could you add it? Thanks! :)

(I was using the web version of Gitea (gitea.com) on a tested migration repo.)

Screenshots

[TheTechRobo]

The first image shows that I just get a text cursor when I hover over the "x commits to master" text, the second shows how there is "no need to create a PR".

[jolheiser]

The first is a feature request, however the second is because you have base/head mixed up.

https://gitea.com/TheTechRobo/palc-attempt2/compare/v.0.8.4-stable...master

[a1012112796]

Suggest add compare link in release page like github.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. I am here to help clear issues left open even if solved or waiting for more insight. This issue will be closed if no further activity occurs during the next 2 weeks. If the issue is still valid just add a comment to keep it alive. Thank you for your contributions.

[jtran]

Hi, I'm going to start working on a pull request for this.

[jtran]

See PR #15695.