Commit, compare and SHA links render the SHA in code with the rest of
the URL after it, and links to other repositories get an `owner/repo@`
prefix like references do.
- Abbreviated SHAs, branch compares and `<url>` autolinks now render as
commit links
- Pull request commit URLs no longer break into an issue reference plus
stray text
- Only routes that take a SHA are shortened, so file and API URLs stay
plain
Replaces https://github.com/go-gitea/gitea/pull/36725
<img width="620" alt="Commit links before and after"
src="https://github.com/user-attachments/assets/5919c8a0-94e3-4148-ad11-6944bf790572"
/>
The logic of "URLJoin" is unclear and it is often abused.
Also:
* Correct the `resolveLinkRelative` behavior
* Fix missing "PathEscape" in `ToTag`
* Fix more FIXMEs, and add new FIXMEs for newly found problems
* Refactor "auth page common template data"
* Fix#33972
* Use consistent path resolving for links and medias.
* No need to make the markup renders to resolve the paths, instead, the
paths are all correctly resolved in the "post process" step.
* Fix#33274
* Since 1.23, all paths starting with "/" are relative to current render
context (for example: the current repo branch)
* Introduce `/:root/path-relative-to-root`, then the path will be
rendered as relative to "ROOT_URL"
This PR removes (almost) all path tricks, and introduces "renderhelper"
package.
Now we can clearly see the rendering behaviors for comment/file/wiki,
more details are in "renderhelper" tests.
Fix#31411 , fix#18592, fix#25632 and maybe more problems. (ps: fix
#32608 by the way)
To make the markup package easier to maintain:
1. Split some go files into small files
2. Use a shared util.NopCloser, remove duplicate code
3. Remove unused functions