mvn.bat does not properly return the exit code of the java process
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Key: MNG-1632
URL: http://jira.codehaus.org/browse/MNG-1632
Project: Maven 2
Type: Bug
Components: maven-release-plugin, maven-core
Reporter: David Hawkins
This manifests itself when running release:perform and an error occurs in the
child process. The stdout shows a build error for the child process, but a
shows build success for the outer process. This is pretty confusing if you
only happen to look at the last message.
This patch also makes mvn.bat return the error code properly to when running
within cygwin.
Detailed explanation: The problem is that running mvn.bat within cygwin, you
are actually running cmd.exe which then executes mvn.bat. The exit code
returned to the calling application is actually the exit code from the
execution of cmd.exe, not the .bat script executed within it. In order to get
the exit code all the way out to the calling application, you have to omit the
/b when calling exit. ("exit 0" vs. "exit /b 0"). When calling exit without
the /b, the cmd prompt window (if any) will actually exit, so mvn.bat makes
sure it is a batch script whose execution originated in a cygwin shell. If it
originated in cygwin, it uses "exit" else it uses "exit /b".
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