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https://issues.apache.org/jira/browse/MCOMPILER-425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17201501#comment-17201501
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Michael Boyles commented on MCOMPILER-425:
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Shouldn't you be doing this? They're on different lines, which is what you
wanted.
<compilerArgs><arg>-XDcompilePolicy=simple</arg><arg>-Xplugin:ErrorProne</arg>
<arg>-Xep:ObjectToString:ERROR</arg></compilerArgs>
You say that it works when not forking, but these parameters are only used when
forking. As per [the
docs|https://maven.apache.org/plugins/maven-compiler-plugin/compile-mojo.html#compilerArgs]
"Sets the arguments to be passed to the compiler if {{fork}} is set to
{{true"}}
So if you think that these params are being applied to non-forked version, you
are mistaken. (I doubled-checked with latest build to see whether the docs were
accurate, by passing a spurious compiler parameter, and it was indeed not
applied)
> Compiler argument with newline treated as multiple arguments in fork mode
> -------------------------------------------------------------------------
>
> Key: MCOMPILER-425
> URL: https://issues.apache.org/jira/browse/MCOMPILER-425
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.8.1
> Reporter: David Phillips
> Priority: Major
>
> In the below example, we want to pass the second argument as a single
> argument to the compiler, but we add newlines in the XML for readability.
> This works correctly when not forking, but when forking, the argument is
> treated as multiple arguments.
> {code:xml}
> <configuration>
> <fork>true</fork>
> <compilerArgs>
> <arg>-XDcompilePolicy=simple</arg>
> <arg>
> -Xplugin:ErrorProne
> -Xep:ObjectToString:ERROR
> </arg>
> </compilerArgs>
> <annotationProcessorPaths>
> <path>
> <groupId>com.google.errorprone</groupId>
> <artifactId>error_prone_core</artifactId>
> <version>2.4.0</version>
> </path>
> </annotationProcessorPaths>
> </configuration>
> {code}
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