prevent "illegal line" message when loading library with FEFF chars in properties file

app/src/processing/app/Util.java

@@ -103,14 +103,14 @@ public class Util {
       if (commentMarker != -1) {
         line = line.substring(0, commentMarker);
       }
-      // Remove extra whitespace
-      line = line.trim();
+      // Remove extra whitespace (including the x00A0 and xFEFF)
+      line = PApplet.trim(line);
 
       if (line.length() != 0) {
         int equals = line.indexOf('=');
         if (equals == -1) {
           if (filename != null) {
-            System.err.println("Ignoring illegal line in " + filename);
+            System.err.println("Ignoring illegal line in " + filename + ":");
             System.err.println("  " + line);
           }
         } else {

core/todo.txt

@@ -2,6 +2,7 @@
 X loadJSONObject/Array() now return null if the given file was not found
 X   https://github.com/processing/processing/pull/6081
 X remove zero width no-break space (U+FEFF) character with trim()
+X fix "illegal line" message when loading library with FEFF chars in properties file
 
 
 fixed in 4.x (close/lock these with final 4.0 release)

todo.txt

@@ -6,6 +6,7 @@ X   also for exported applications
 X audio and video broken on macOS b/c can't access mic/camera
 X   https://github.com/processing/processing-sound/issues/51
 X 'ant source-jar' target added to core
+X   https://github.com/processing/processing4/issues/118
 
 
 contribs