mvnd modifies original output when using quiet flag

[peteruhnak]

I am not sure whether this is intentional or not, but the output is augmented when using the quiet tag.

plain maven:

PS D:\tmp> mvn help:evaluate '-Dexpression=settings.localRepository' -DforceStdout -q
C:\Users\uhnak\.m2\repository

mvnd adds prefix [INFO] [stdout]

PS D:\tmp> C:\Applications\mvnd\bin\mvnd.exe help:evaluate '-Dexpression=settings.localRepository' '-DforceStdout' -q
[INFO] [stdout] C:\Users\uhnak\.m2\repository

Also when the command is invoked from a non-terminal (e.g. launched via Java's Process), then this additional warning is printed to stderr

Nov 03, 2021 4:33:53 PM org.jline.utils.Log logr
WARNING: Unable to create a system terminal, creating a dumb terminal (enable debug logging for more information)

Though I am not sure whether running mvnd through terminal is a supported use, or whether I should only ever use mvn for that, in which case this issue is moot and can be closed.

As a side-note, if I don't run it in quiet mode (no -q), then the output is the same for maven and mvnd (both without [INFO] [stdout])

plain maven:

PS D:\tmp> mvn help:evaluate '-Dexpression=settings.localRepository' -DforceStdout
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-help-plugin:3.2.0:evaluate (default-cli) @ standalone-pom ---
[INFO] No artifact parameter specified, using 'org.apache.maven:standalone-pom:pom:1' as project.
[INFO]
C:\Users\uhnak\.m2\repository
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.069 s
[INFO] Finished at: 2021-11-03T16:29:34+01:00
[INFO] ------------------------------------------------------------------------

mvnd:

> C:\Applications\mvnd\bin\mvnd.exe help:evaluate '-Dexpression=settings.localRepository' '-DforceStdout'
[INFO] Processing build on daemon 7f40520a
[INFO] Scanning for projects...
[INFO] BuildTimeEventSpy is registered.
[INFO]
[INFO] Using the SmartBuilder implementation with a thread count of 3
[INFO] Task segments : [help:evaluate]
[INFO] Build maximum degree of concurrency is 3
[INFO] Total number of projects is 1
[INFO]
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-help-plugin:3.2.0:evaluate (default-cli) @ standalone-pom ---
[INFO] No artifact parameter specified, using 'org.apache.maven:standalone-pom:pom:1' as project.
[INFO]
C:\Users\uhnak\.m2\repository
[INFO] Segment walltime 0 s, segment projects service time 0 s, effective/maximum degree of concurrency 0.93/3
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.021 s (Wall Clock)
[INFO] Finished at: 2021-11-03T16:29:48+01:00
[INFO] ------------------------------------------------------------------------

[gnodet]

You can add --raw-streams to the command line to avoid the decorated output.

[gnodet]

You should be able to get rid of the warning by using -Dorg.jline.terminal.dumb=true

[peteruhnak]

This solves my issue. Thanks for the quick response!