- 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 07916c8723)
(cherry picked from commit 2eedbe0c55)
(cherry picked from commit 3810d905c6)
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.