Sbt server displays weird characters around dates on Windows

[segundovolante]

steps

Run sbt, for example

• sbt compile

problem

Output display weird characters on the timestamps.

Total time: 1 s, completed May 12, 2024, 2:35:31 PM

This does not happen on WSL (ubuntu), same terminal same font.

expectation

Display date times without the extra characters:

Total time: 1 s, completed May 12, 2024, 2:35:31 PM

notes

[eed3si9n]

Thanks for the report. Could you tell us what the environment that you are seeing this issue, for example the shell and the console program? Also could you check if this is specific to sbt 1.10.0 or it happens with previous versions?

[segundovolante]

Both images are using Windows terminal. (Version: 1.20.11271.0)

• Black background: Powershell 7.4.2 (Windows 11) . I can also reproduce this on regular CMD from windows.
• Blue background: WSL - Ubuntu on windows terminal

Yes, I also see this happening on 1.9.9

[eed3si9n]

So I'm guessing that "ΓÇ»" is either an ASCII control sequence or some string in encoding A, misinterpreted by your shell as another encoding B, also known as mojibakeh. If you have some override of JVM parameters, could you try adding -Dfile.encoding=UTF-8?

[segundovolante]

I ran it in verbose mode, I can see the encoding being UTF-8. I still see the issue.

❯ sbt -v
# Executing command line:
"C:\Program Files\Amazon Corretto\jdk21.0.3_9\bin\java.exe"
-Dfile.encoding=UTF-8
-Dscala.ext.dirs="C:\Users\username\.sbt\1.0\java9-rt-ext-amazon_com_inc__21_0_3"
-Xms1024m
-Xmx1024m
-Xss4M
-XX:ReservedCodeCacheSize=128m
-cp
"C:\Users\username\AppData\Local\Coursier\cache\arc\https\github.com\sbt\sbt\releases\download\v1.10.0\sbt-1.10.0.zip\sbt\bin\sbt-launch.jar"
xsbt.boot.Boot

[segundovolante]

unrelated, but I noticed that this does not work on powershell (it works on regular cmd)

sbt -Dfile.encoding=UTF-8

It throws this error:

[error] Not a valid command: UTF-8
[error] Not a valid project ID: UTF-8
[error] Expected ':'
[error] Not a valid key: UTF-8
[error] UTF-8
[error]  

It seems that on windows/powershell I am not able to override properties that contain a period.

This works:

sbt  -Dkey=value

[segundovolante]

Hey I think i found the issue.

It uses this character NNBS, this can also be reproduced in scala-cli, or other java tool I think. This might be an issue on how java handles this in windows,.

val c: Char = 8239

I don't think it is specific to SBT, so you can probably close it, unless you want to display different format in windows compared to linux.