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Unity 2020で出てくるError detecting Visual Studio installations~への対処法

Last updated at Posted at 2020-07-30

エラー文

Error detecting Visual Studio installations: System.ArgumentException: JSON parse error: Invalid escape character in string.

原因

Visual Studio Editorパッケージが使用しているvswhere.exeから出力されるJsonに
一部Shift_JIS文字列が含まれるためパースでエラーが起きてるらしい

対処法

Packages/com.unity.ide.visualstudio/Editor/Discovery.csのProcessインスタンス生成部分を修正して強制的にUTF-8にする

Discovery.cs

var process = new Process
{
	StartInfo = new ProcessStartInfo
	{
		FileName = progpath,
		//-utf8オプションで強制的にUTF-8として出力
		//Arguments = "-prerelease -format json",
		Arguments = "-prerelease -format json -utf8",
		UseShellExecute = false,
		CreateNoWindow = true,
		RedirectStandardOutput = true,
		RedirectStandardError = true,
	}
};

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