fixed changing CWD for Windows

src/main/java/simulizer/Simulizer.java

@@ -5,18 +5,19 @@
 import simulizer.utils.UIUtils;
 
 import java.nio.file.Path;
+import java.nio.file.Paths;
 
 public class Simulizer {
 	private static Image icon = null;
 	public static CommandLineArguments.Mode mode; // CMD_MODE || GUI_MODE
 
     public static void main(String[] args) {
-		Path jarPath = FileUtils.getJarPath();
-		if(jarPath.toString().contains(".jar")) { // false if running from gradle or IDE
+		String jarPath = FileUtils.getJarPath();
+		if(jarPath != null && jarPath.contains(".jar")) { // false if running from gradle or IDE
 			// should be /some/path/Simulizer/lib/Simulizer-VER.jar
 			//
 			// first parent() to get lib/, second to get Simulizer/
-			String simulizerRoot = jarPath.getParent().getParent().toString();
+			String simulizerRoot = Paths.get(jarPath).getParent().getParent().toString();
 			System.out.println("moving current working directory to " + simulizerRoot);
 			FileUtils.setCWD(simulizerRoot);
 		}

src/main/java/simulizer/settings/Settings.java

@@ -113,7 +113,7 @@ private Settings(File json, JsonObject jsonObject) {
 
 		settings.add(new ObjectSetting("editor", "Editor")
 					.add(new StringSetting("font-family", "Font family", "Font family (optional). Supports all installed monospace fonts, use single quotes for names with spaces. Separate multiple choices with commas", "monospace"))
-					.add(new IntegerSetting("font-size", "Font size", "Font size in px", 20, 0, Integer.MAX_VALUE))
+					.add(new IntegerSetting("font-size", "Font size", "Font size in px", 18, 0, Integer.MAX_VALUE))
 					.add(new StringSetting("initial-file", "Initial file", "Path to a file to load at startup (optional)"))
 					.add(new DoubleSetting("scroll-speed", "Scroll speed", "", 0.05, 0, 10))
 					.add(new BooleanSetting("soft-tabs", "Soft tabs", "", true))

src/main/java/simulizer/ui/windows/Editor.java

@@ -137,7 +137,10 @@ public Editor() {
 		engine = view.getEngine();
 		engine.setJavaScriptEnabled(true);
 
-		engine.setOnError((errorEvent) -> UIUtils.showErrorDialog("Editor JS Error", errorEvent.toString()));
+		// these error messages seem useless because they only warn about re-using web cache directories
+		// which means that opening multiple instances of Simulizer gives error messages because both are trying to access
+		// ~/.simulizer.GuiMode$App and ~/.simulizer.Simulizer
+		//engine.setOnError((errorEvent) -> UIUtils.showErrorDialog("Editor JS Error", errorEvent.toString()));
 
 		// making it so calling alert() from javascript outputs to the console
 		engine.setOnAlert((event) -> System.out.println("javascript alert: " + event.getData()));

src/main/java/simulizer/utils/FileUtils.java

@@ -4,6 +4,7 @@
 
 import java.awt.*;
 import java.io.*;
+import java.net.URISyntaxException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
@@ -162,8 +163,16 @@ public static String getResourceContent(String path) {
 		return sb.toString();
 	}
 
-	public static Path getJarPath() {
-        return Paths.get(Simulizer.class.getProtectionDomain().getCodeSource().getLocation().getPath());
+	public static String getJarPath() {
+		try {
+			// the location is given as file:/some/place which is OK on *nix because
+			// that gets translated to /some/place which is what we want.
+			// but on Windows the location gets translated to /C:/some/place which is not
+			// correct. So use File, given the URL to convert from URL to OS specific path
+			return new File(Simulizer.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getAbsolutePath();
+		} catch (URISyntaxException e) {
+            return null;
+		}
 	}
 
 	public static void setCWD(String path) {