* Fix Syntax highlight for token change in added/deleted code
For diffs we first syntax highlight the before and after line then use a 3rd party diff library to find the difference in them and create a substring based on that, which we then highlight a 2nd time to show the specific difference within a line that has changed. In a specific case if the diffrence also changes the chroma class it will split in the middle of the attr and cause broken HTML:
```
<span class="nx">oldtext<span>
<span class="k">var newtext<span>
```
Will then split on
```
<span class="
```
Where the difference starts, and produce something broken like:
```
<span class="<span class="removed-code">nx"oldtext</span></span
```
Fix that by detecting when it happens and putting the HTML back together properly before highlighting the added/deleted code.
Fixes#12235
* fix lint
* apply fix to all diff sections. Also handle case where insert/remove starts with a closing span
* Add a test for this new code
* remove comment
Co-authored-by: Lauris BH <lauris@nix.lv>
* Server-side syntax hilighting for all code
This PR does a few things:
* Remove all traces of highlight.js
* Use chroma library to provide fast syntax hilighting directly on the server
* Provide syntax hilighting for diffs
* Re-style both unified and split diffs views
* Add custom syntax hilighting styling for both regular and arc-green
Fixes#7729Fixes#10157Fixes#11825Fixes#7728Fixes#3872Fixes#3682
And perhaps gets closer to #9553
* fix line marker
* fix repo search
* Fix single line select
* properly load settings
* npm uninstall highlight.js
* review suggestion
* code review
* forgot to call function
* fix test
* Apply suggestions from code review
suggestions from @silverwind thanks
Co-authored-by: silverwind <me@silverwind.io>
* code review
* copy/paste error
* Use const for highlight size limit
* Update web_src/less/_repository.less
Co-authored-by: Lauris BH <lauris@nix.lv>
* update size limit to 1MB and other styling tweaks
* fix highlighting for certain diff sections
* fix test
* add worker back as suggested
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
* Some refactor on git diff and ignore getting commit information failed on migrating pull request review comments
* fix test
* fix lint
* Change error log to warn
* fix typo
* Migrate reviews when migrating repository from github
* fix lint
* Added test and migration when external user login
* fix test
* fix commented state
* Some improvements
* fix bug when get pull request and ref original author on code comments
* Fix migrated line; Added comment for review
* Don't load all pull requests attributes
* Fix typo
* wrong change copy head
* fix tests
* fix reactions
* Fix test
* fix fmt
* fix review comment reactions
