run() shows garbled text in Windows 10

[yfakariya]

run() and runAsync() of run.dart module shows garbled text for flutter doctor as following

[竏咯 Flutter (Channel

instead of

[√] Flutter (Channel...

I can generate this garbled text with encoding "[√]" with utf8 and then decoding it with systemEncoding.

How to reproduce

Run following in Windows which code point settings is not UTF-8 (chcp shows a number other than 65001):

run('flutter', arguments: ['doctor'])

Note that I found that normal texts are shown with explicitly specifying utf8 for RunOptions.stdoutEncoding and RunOptions.stderrEncoding, and systemEncoding is properly set to ANSI encoding of my environment.

Workaround

We can avoid this issue with passing RunOptions(stdoutEncoding: utf8, stderrEncoding: utf8, ...) for run() and runAsync().

Environments

• grinder: 0.9.0
• Windows: Windows10 21H1 (build 19043.1237)
• Result of chcp: 932