modify return code handling from the Command script (#1798)

app/src/processing/mode/java/Compiler.java

@@ -149,8 +149,12 @@ public class Compiler {
       writer.flush();
       writer.close();
 
+      String errorString = errorBuffer.toString();
+      if (errorString.trim().length() != 0) {
+        success = false;
+      }
       BufferedReader reader =
-        new BufferedReader(new StringReader(errorBuffer.toString()));
+        new BufferedReader(new StringReader(errorString));
       //System.err.println(errorBuffer.toString());
 
       String line = null;

build/linux/processing

@@ -104,6 +104,7 @@ cmd_name='processing-java'
 if [ $current_name = $cmd_name ]
 then
     java processing.mode.java.Commander "$@"
+    exit $?
 else
   # Start Processing in the same directory as this script
   if [ "$1" ]; then