Escape single quotes if needed

Otherwise scripts that themselves use single quotes will fail.

Author: hinerm

src/main/java/org/scijava/plugins/scripting/matlab/MATLABScriptEngine.java

@@ -114,7 +114,12 @@ public Object eval(final Reader reader) throws ScriptException {
 				else if (line.matches(".*[\\w].*" + COMMENT + ".*")) {
 					// We need to strip out any comments, as they consume the newline
 					// character leading to incorrect script parsing.
-					command.append(line.substring(0, line.indexOf(COMMENT)));
+					line = line.substring(0, line.indexOf(COMMENT));
+
+					// Add escaped single quotes where needed
+					line = line.replaceAll("'", "\''");
+
+					command.append(line);
 				}
 				else command.append(line);