- If you attempted to get a branch feed on a empty repository, it would
result in a panic as the code expects that the branch exists.
- `context.RepoRefByType` would normally already 404 if the branch
doesn't exist, however if a repository is empty, it would not do this
check.
- Fix bug where `/atom/branch/*` would return a RSS feed.
(cherry picked from commit d27bcd98a4)
(cherry picked from commit c58566403d)
(cherry picked from commit b8b3f6ab8b)
(cherry picked from commit 195520100b)
(cherry picked from commit 6e417087dd)
(cherry picked from commit ff91e5957a)
(cherry picked from commit 6626d5cc75)
Follow #22719
### Major changes
1. `ServerError` doesn't do format, so remove the `%s`
2. Simplify `RenderBranchFeed` (slightly)
3. Remove unused `BranchFeedRSS`
4. Make `feed.RenderBranchFeed` respect `EnableFeed` config
5. Make `RepoBranchTagSelector.vue` respect `EnableFeed` setting,
otherwise there is always RSS icon
6. The `(branchURLPrefix + item.url).replace('src', 'rss')` doesn't seem
right for all cases, for example, the string `src` could appear in
`branchURLPrefix`, so we need a separate `rssURLPrefix`
7. The `<a>` in Vue menu needs `@click.stop`, otherwise the menu itself
would be triggered at the same time
8. Change `<a><button></button></a>` to `<a role=button>`
9. Use `{{PathEscapeSegments .TreePath}}` instead of `{{range $i, $v :=
.TreeNames}}/{{$v}}{{end}}`
Screenshot of changed parts:
<details>
![image](https://user-images.githubusercontent.com/2114189/234315538-66603694-9093-48a8-af33-83575fd7a018.png)
![image](https://user-images.githubusercontent.com/2114189/234315786-f1efa60b-012e-490b-8ce2-d448dc6fe5c9.png)
![image](https://user-images.githubusercontent.com/2114189/234334941-446941bc-1baa-4256-8850-ccc439476cda.png)
</details>
### Other thoughts
Should we remove the RSS icon from the branch dropdown list? It seems
too complex for a list UI, and users already have the chance to get the
RSS feed URL from "branches" page.
---------
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: silverwind <me@silverwind.io>
Fix#22228 adding RSS feeds for branches and files.
RSS feeds are accessed through:
* [gitea]/src/branch/{branch}.rss
* [gitea]/src/branch/{branch}/{file_name}.rss
No changes have been made to the UI to expose the feed urls for branches
and files.