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b272224918
Backport #28935 by @silverwind
The `ToUTF8*` functions were stripping BOM, while BOM is actually valid
in UTF8, so the stripping must be optional depending on use case. This
does:
- Add a options struct to all `ToUTF8*` functions, that by default will
strip BOM to preserve existing behaviour
- Remove `ToUTF8` function, it was dead code
- Rename `ToUTF8WithErr` to `ToUTF8`
- Preserve BOM in Monaco Editor
- Remove a unnecessary newline in the textarea value. Browsers did
ignore it, it seems but it's better not to rely on this behaviour.
Fixes: https://github.com/go-gitea/gitea/issues/28743
Related: https://github.com/go-gitea/gitea/issues/6716 which seems to
have once introduced a mechanism that strips and re-adds the BOM, but
from what I can tell, this mechanism was removed at some point after
that PR.
Co-authored-by: silverwind <me@silverwind.io>
(cherry picked from commit
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| .. | ||
| ambiguous | ||
| invisible | ||
| ambiguous.go | ||
| ambiguous_gen.go | ||
| ambiguous_gen_test.go | ||
| breakwriter.go | ||
| breakwriter_test.go | ||
| charset.go | ||
| charset_test.go | ||
| escape.go | ||
| escape_status.go | ||
| escape_stream.go | ||
| escape_test.go | ||
| htmlstream.go | ||
| invisible_gen.go | ||