Issue Description

On Japanese Windows systems, running msbuild directly in the console displays output correctly.

However, when piping the output (e.g., msbuild | more), the result becomes garbled. It seems that MSBuild outputs UTF-8, but when the output is piped, the Windows console expects text in the active code page (usually CP932 / Shift-JIS), leading to misinterpretation of multibyte characters.

This causes serious usability issues in environments where UTF-8 output cannot be correctly handled by standard console tools, and switching to UTF-8 (chcp 65001) is not an option due to system policy or tool incompatibility.

Steps to Reproduce

1. Open Developer Command Prompt for VS 2022 on a Japanese Windows machine (default code page: 932).
2. Run msbuild → Output is readable.

C:\Program Files\Microsoft Visual Studio\2022\Professional>msbuild
MSBuild のバージョン 17.14.8+a7a4d5af0 (.NET Framework)
MSBUILD : error MSB1003: プロジェクト ファイルまたはソリューション ファイルを指定してください。現在の作業ディレクトリはプロジェクト ファイルまたはソリューション ファイルを含んでいません。

4. Run msbuild | more → Output is garbled (UTF-8 interpreted as Shift-JIS).

C:\Program Files\Microsoft Visual Studio\2022\Professional>msbuild | more
MSBuild 縺ｮ繝舌・繧ｸ繝ｧ繝ｳ 17.14.8+a7a4d5af0 (.NET Framework)
MSBUILD : error MSB1003: 繝励Ο繧ｸ繧ｧ繧ｯ繝・繝輔ぃ繧､繝ｫ縺ｾ縺溘・繧ｽ繝ｪ繝･繝ｼ繧ｷ繝ｧ繝ｳ 繝輔ぃ繧､繝ｫ繧呈欠螳壹＠縺ｦ縺上□ 縺輔＞縲ら樟蝨ｨ縺ｮ菴懈･ｭ繝・ぅ繝ｬ繧ｯ繝医Μ縺ｯ繝励Ο繧ｸ繧ｧ繧ｯ繝・繝輔ぃ繧､繝ｫ縺ｾ縺溘・繧ｽ繝ｪ繝･繝ｼ繧ｷ繝ｧ繝ｳ 繝輔ぃ繧､繝ｫ繧貞性繧薙〒縺・∪縺帙ｓ縲・

Expected Behavior

MSBuild should provide a way to emit text in the console's active code page when writing to a pipe or redirected output, or detect the output target and adjust accordingly.

• Redirecting output to a file (e.g., msbuild > log.txt) and then viewing it with encoding conversion does not solve the problem, as we require real-time output.
• Using chcp 65001 is not feasible due to system policy and compatibility issues with other tools.

Actual Behavior

See "Steps to Reproduce"

Analysis

No response

Versions & Configurations

• MSBuild version: 17.14.8+a7a4d5af0 (.NET Framework)
• OS: Windows 10/11 Japanese edition
• Locale: Japanese
• Console code page: 932