Revert "[apachegh-11363] Remove debug output, ready for merge"

This reverts commit 199b457.

Author: gnodet

apache-maven/src/assembly/maven/bin/mvn.cmd

@@ -186,15 +186,23 @@ rem Use Java to parse jvm.config to avoid batch script parsing issues with speci
 rem This handles pipes, quotes, and other special characters correctly
 rem Use random temp directory to avoid conflicts between different Maven versions
 set "JVM_CONFIG_PARSER_DIR=%TEMP%\mvn-jvm-parser-%RANDOM%-%RANDOM%"
-mkdir "%JVM_CONFIG_PARSER_DIR%" 2>nul
+mkdir "%JVM_CONFIG_PARSER_DIR%"
 set "JVM_CONFIG_TEMP=%TEMP%\mvn-jvm-config-%RANDOM%.txt"
+set "JVM_CONFIG_ERR=%TEMP%\mvn-jvm-config-err-%RANDOM%.txt"
 "%JAVACMD:java.exe=javac.exe%" -d "%JVM_CONFIG_PARSER_DIR%" "%MAVEN_HOME%\bin\JvmConfigParser.java" >nul 2>&1
-"%JAVACMD%" -cp "%JVM_CONFIG_PARSER_DIR%" JvmConfigParser "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" "%MAVEN_PROJECTBASEDIR%" > "%JVM_CONFIG_TEMP%" 2>nul
+"%JAVACMD%" -cp "%JVM_CONFIG_PARSER_DIR%" JvmConfigParser "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" "%MAVEN_PROJECTBASEDIR%" > "%JVM_CONFIG_TEMP%" 2> "%JVM_CONFIG_ERR%"
 rem Read the single line from temp file
 set /p JVM_CONFIG_MAVEN_OPTS=<"%JVM_CONFIG_TEMP%"
 
+rem Debug output to file for IT verification
+echo JVM_CONFIG_MAVEN_OPTS=%JVM_CONFIG_MAVEN_OPTS% > "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
+echo MAVEN_OPTS=%MAVEN_OPTS% >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
+echo PARSER_STDERR: >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
+type "%JVM_CONFIG_ERR%" >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt" 2>nul
+
 rem Cleanup temp files and directory
 del "%JVM_CONFIG_TEMP%" 2>nul
+del "%JVM_CONFIG_ERR%" 2>nul
 rmdir /s /q "%JVM_CONFIG_PARSER_DIR%" 2>nul
 
 :endReadJvmConfig