Compare feature with frontend and single-file diff

• Gitea version (or commit ref): release/v1.1

Description

I cannot find a page or a button where I am able to choose two commits/tags/branches for comparsion. GitLab and GitHub provide such a feature. It is really helpful to undestand what is going on in your repo.

[gsantner]

Having an additonal "Compare" button (or/and a "changes since this commit") while viewing a commit would also be great

[mxmehl]

To give a bit more ideas of what I think would be helpful for a better compare feature:

At the FSFE we switched from trac/SVN to Gitea to maintain our website. With trac, our voluntary translators were able to see the diff of a file between two freely choosable commits.

For example, with the file work.en.xhtml we would like to see the difference between the current version/latest change (4e89fd20cc) and a freely choosable other date/commit (e.g. d25c06af1e).

In trac, this diff is quite helpful for translators to know which bits have changed in a file over a certain span of time to update an outdated translated version.

[mxmehl]

Can we please rename this issue, e.g. to "Compare feature with frontend and single-file diff" or so? The current title doesn't seem to catch what we discussed here.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 weeks. Thank you for your contributions.

[mxmehl]

I would still find this highly interesting and relevant in order to make Gitea more professionally usable.

[nunoperalta]

I would love to see this implemented.