Fix #12464: Skip MAVEN_ARGS for non-default main classes (--up, --enc, --shell) (#12465) (#12466)

When MAVEN_MAIN_CLASS is not the default MavenCling (i.e., when using
--up, --enc, or --shell), skip prepending $MAVEN_ARGS to the command
line. MAVEN_ARGS may contain build-specific flags like -ntp, -T4, -U
that are not recognized by MavenUpCling, MavenEncCling, or
MavenShellCling.

The handle_args function already sets MAVEN_MAIN_CLASS for these
sub-commands — use that to gate MAVEN_ARGS inclusion.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: gnodet

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

@@ -290,10 +290,20 @@ cmd="\"$JAVACMD\" \
 
 if [ -n "$MAVEN_DEBUG_SCRIPT" ]; then
   echo "[DEBUG] Launching JVM with command:" >&2
-  printf '[DEBUG]   %s' "$cmd" >&2; printf ' %s' "$MAVEN_ARGS" >&2; printf ' "%s"' "$@" >&2; echo >&2
+  printf '[DEBUG]   %s' "$cmd" >&2
+  if [ "$MAVEN_MAIN_CLASS" = "org.apache.maven.cling.MavenCling" ]; then
+    printf ' %s' "$MAVEN_ARGS" >&2
+  fi
+  printf ' "%s"' "$@" >&2; echo >&2
 fi
 
 # User arguments ("$@") and MAVEN_ARGS are passed outside the eval'd string
 # to preserve literal values (backslashes, ${...} placeholders) without
 # shell re-parsing. Only the base command uses eval for MAVEN_OPTS word splitting.
-eval exec "$cmd" '$MAVEN_ARGS' '"$@"'
+# MAVEN_ARGS is only passed for the default Maven build command (MavenCling),
+# not for sub-commands like --up, --enc, or --shell which have their own options.
+if [ "$MAVEN_MAIN_CLASS" = "org.apache.maven.cling.MavenCling" ]; then
+  eval exec "$cmd" '$MAVEN_ARGS' '"$@"'
+else
+  eval exec "$cmd" '"$@"'
+fi

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

@@ -291,6 +291,10 @@ for %%i in ("%MAVEN_HOME%"\boot\plexus-classworlds-*) do set LAUNCHER_JAR="%%i"
 set LAUNCHER_CLASS=org.codehaus.plexus.classworlds.launcher.Launcher
 if "%MAVEN_MAIN_CLASS%"=="" @set MAVEN_MAIN_CLASS=org.apache.maven.cling.MavenCling
 
+@REM Only pass MAVEN_ARGS for the default Maven build command (MavenCling),
+@REM not for sub-commands like --up, --enc, or --shell which have their own options.
+if not "%MAVEN_MAIN_CLASS%"=="org.apache.maven.cling.MavenCling" set "MAVEN_ARGS="
+
 if defined MAVEN_DEBUG_SCRIPT (
   echo [DEBUG] Launching JVM with command:
   echo [DEBUG]   "%JAVACMD%" %INTERNAL_MAVEN_OPTS% %MAVEN_OPTS% %JVM_CONFIG_MAVEN_OPTS% %MAVEN_DEBUG_OPTS% --enable-native-access=ALL-UNNAMED -classpath %LAUNCHER_JAR% "-Dclassworlds.conf=%CLASSWORLDS_CONF%" "-Dmaven.home=%MAVEN_HOME%" "-Dmaven.mainClass=%MAVEN_MAIN_CLASS%" "-Dlibrary.jline.path=%MAVEN_HOME%\lib\jline-native" "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %LAUNCHER_CLASS% %MAVEN_ARGS% %*