Editor removes BOM

[dsteinbe11]

Description

If a file is edited with the built-in editor, the BOM is removed after the commit.

The file is UTF-8-BOM, after the commit it´s UTF-8.

I have reproduced this issue with your demo site, see:
https://try.gitea.io/dsteinbe/editor-bom-issue

Gitea Version

1.21.3

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

No response

Screenshots

No response

Git Version

2.40.0, Wire Protocol Version 2 Enabled

Operating System

windows

How are you running Gitea?

service

Database

SQLite

[crackedmind]

yeh, it's annoying

[silverwind]

Maybe it's because we don't set the perserveBOM option on Monaco's getValue:

https://microsoft.github.io/monaco-editor/typedoc/interfaces/editor.ITextModel.html#getValue

[github-actions]

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