The code for detection of lines in highlight.go is somewhat too complex
and doesn't take account of how Chroma is actually splitting things into
lines for us.
Remove both the .line and .cl classes from Chroma's HTML which made
the old conditional work again. This fixed Copy of YAML files while also
reducing the amount of rendered HTML nodes.
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
* Fix copy/paste of empty newlines again
Fixes: https://github.com/go-gitea/gitea/issues/19331
Regressed by: https://github.com/go-gitea/gitea/pull/18270
Needed to do another newline addition to the Chroma output HTML to get
copy/paste work again. The previous replacement conditions are probably
obsolete, but as I'm not 100% sure, I opted to keep them.
Specifically, the Chroma HTML change mentioned in
https://github.com/go-gitea/gitea/pull/18270#issuecomment-1013350246
broke our previous newline replacement for such empty lines.
Also included are a few changes to make the test more pleasant to work
with.
* run go mod tidy
* add util.Dedent
* copy in the code
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
Use check attribute code to check the assigned language of a file and send that in to
chroma as a hint for the language of the file.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Ensure empty lines are copiable and final new line too
When files are highlighted the newline character needs to be added in a whitespace
compliant mode. Also ensure the final empty newline is rendered.
Fix #16434
* Add test and ensure spans closed
Signed-off-by: Andrew Thornton <art27@cantab.net>
