Fix copyright symbol encoding; force UTF-8-BOM encoding for C# files

[n-ski]

Issue

When opening some files in IDEs like Visual Studio or Rider, the developer gets notified that file was opened with UTF-8 encoding. In case of Visual Studio, it tells you that some characters were replaced with substitution character (�) and saving the file will not preserve the original contents; Rider also performs character replacement but preserves the original contents when file is saved.

Visual Studio 2022

 Shows up as modal window, forces you to interact with it.

Rider

 Shows up as notification in the notification bar above the code editor, can be ignored.

The reason why it's happening is that some files are encoded in ISO-8859-1 where the copyright symbol is a single byte (0xA9), which is incompatible with UTF-8 and forces an IDE or a text editor to perform the character substitution.

Changes

• The copyright symbol is encoded as proper UTF-8 code point.
• Replaced weird apostrophes in HtmlWeb.cs file with ASCII apostrophes ('). Those were either not rendered or rendered as �, depending on IDE/text editor.
• Re-encoded all C# files in UTF-8-BOM encoding.
• UTF-8-BOM encoding for C# files is now enforced in IDEs/text editors that support .editorconfig. I chose UTF-8-BOM because it's the default one Visual Studio uses for C#-related files and almost every file in the solution is already encoded in UTF-8-BOM.

Result

The developer doesn't get annoyed with notifications/popups and in case of Visual Studio one doesn't need to be careful not to accidentally commit the substitution character.

[JonathanMagnan]

Hello @n-ski ,

Thank a lot for your contribution.

We will review and merge it this week.

Best Regards,

Jon

[JonathanMagnan]

Hello @n-ski ,

Thank you again for your contribution. Your fix is now merged.

The BOM issue might come back on a few files later today, as the current source is not actually on GitHub. I will move all our latest updates to GitHub and keep only our personal projects in our private repository instead, which makes a lot more sense.

Best Regards,

Jon