@@ -3119,20 +3119,15 @@ public void updateEditorStatus() {
 
 
   /**
-   * @return the Problem for the first error or warning on 'line'
+   * @return the Problem for the most relevant error or warning on 'line',
+   *         defaults to the first error, if there are no errors first warning.
    */
-  Problem findProblem(int line) {
-    int currentTab = getSketch().getCurrentCodeIndex();
-    return problems.stream()
-        .filter(p -> p.getTabIndex() == currentTab)
-        .filter(p -> {
-          int pStartLine = p.getLineNumber();
-          int pEndOffset = p.getStopOffset();
-          int pEndLine = textarea.getLineOfOffset(pEndOffset);
-          return line >= pStartLine && line <= pEndLine;
-        })
-        .findFirst()
-        .orElse(null);
+  protected Problem findProblem(int line) {
+    List<Problem> problems = findProblems(line);
+    for (Problem p : problems) {
+      if (p.isError()) return p;
+    }
+    return problems.isEmpty() ? null : problems.get(0);
   }
 
 
 
@@ -360,6 +360,7 @@ editor.status.missing.right_paren = Missing right parenthesis ")"
 editor.status.missing.left_curly_bracket = Missing left curly bracket "{"
 editor.status.missing.right_curly_bracket = Missing right curly bracket "}"
 editor.status.missing.add = Consider adding "%s"
+editor.status.bad_curly_quote = Curly quotes like %s don't work. Use straight quotes. Ctrl-T to autocorrect.
 editor.status.reserved_words = "color" and "int" are reserved words & cannot be used as variable names
 editor.status.undefined_method = The function "%s(%s)" does not exist
 editor.status.undefined_constructor = The constructor "%s(%s)" does not exist
@@ -369,6 +370,7 @@ editor.status.undef_global_var = The global variable "%s" does not exist
 editor.status.undef_class = The class "%s" does not exist
 editor.status.undef_var = The variable "%s" does not exist
 editor.status.undef_name = The name "%s" cannot be recognized
+editor.status.unterm_string_curly = String literal is not closed by a straight double quote. Curly quotes like %s won't help.
 editor.status.type_mismatch = Type mismatch, "%s" does not match with "%s"
 editor.status.unused_variable = The value of the local variable "%s" is not used
 editor.status.uninitialized_variable = The local variable "%s" may not have been initialized
 
@@ -639,25 +639,48 @@ public String format(final String source) {
         break;
 
       case '"':
+      case '“':
+      case '”':
       case '\'':
+      case '‘':
+      case '’':
         inStatementFlag = true;
-        buf.append(c);
+        char realQuote = c;
+        if (c == '“' || c == '”') realQuote = '"';
+        if (c == '‘' || c == '’') realQuote = '\'';
+        buf.append(realQuote);
+
+        char otherQuote = c;
+        if (c == '“') otherQuote = '”';
+        if (c == '”') otherQuote = '“';
+        if (c == '‘') otherQuote = '’';
+        if (c == '’') otherQuote = '‘';
+
         char cc = nextChar();
-        while (!EOF && cc != c) {
+        // In a proper string, all the quotes tested are c. In a curly-quoted
+        // string, there are three possible end quotes: c, its reverse, and
+        // the correct straight quote.
+        while (!EOF && cc != otherQuote && cc != realQuote && cc != c) {
           buf.append(cc);
           if (cc == '\\') {
             buf.append(cc = nextChar());
           }
-          if (cc == '\n') {
-            writeIndentedLine();
-            startFlag = true;
-          }
+
+          // Syntax error: unterminated string. Leave \n in nextChar, so it
+          // feeds back into the loop.
+          if (peek() == '\n') break;
           cc = nextChar();
         }
-        buf.append(cc);
-        if (readForNewLine()) {
-          // push a newline into the stream
-          chars[pos--] = '\n';
+        if (cc == otherQuote || cc == realQuote || cc == c) {
+          buf.append(realQuote);
+          if (readForNewLine()) {
+            // push a newline into the stream
+            chars[pos--] = '\n';
+          }
+        } else {
+          // We've had a syntax error if the string wasn't terminated by EOL/
+          // EOF, just abandon this statement.
+          inStatementFlag = false;
         }
         break;
 
 
@@ -38,6 +38,7 @@
 import org.apache.tools.ant.ProjectHelper;
 
 import processing.app.Base;
+import processing.app.Language;
 import processing.app.Library;
 import processing.app.Messages;
 import processing.app.Mode;
@@ -345,9 +346,30 @@ public String preprocess(File srcFolder,
 
 //      System.err.println("and then she tells me " + tsre.toString());
       // TODO not tested since removing ORO matcher.. ^ could be a problem
-      String mess = "^line (\\d+):(\\d+):\\s";
+      String locationRegex = "^line (\\d+):(\\d+):\\s";
+      String message = tsre.getMessage();
+      String[] m;
+
+      if (null != (m = PApplet.match(tsre.toString(),
+              "unexpected char: (.*)"))) {
+        char c = 0;
+        if (m[1].startsWith("0x")) {     // Hex
+          c = (char) PApplet.unhex(m[1].substring(2));
+        } else if (m[1].length() == 3) { // Quoted
+          c = m[1].charAt(1);
+        } else if (m[1].length() == 1) { // Alone
+          c = m[1].charAt(0);
+        }
+        if (c == '\u201C' || c == '\u201D' || // “”
+            c == '\u2018' || c == '\u2019') { // ‘’
+          message = Language.interpolate("editor.status.bad_curly_quote", c);
+        } else if (c != 0) {
+          message = "Not expecting symbol " + m[1] +
+              ", which is " + Character.getName(c) + ".";
+        }
+      }
 
-      String[] matches = PApplet.match(tsre.toString(), mess);
+      String[] matches = PApplet.match(tsre.toString(), locationRegex);
       if (matches != null) {
         int errorLine = Integer.parseInt(matches[1]) - 1;
         int errorColumn = Integer.parseInt(matches[2]);
@@ -362,7 +384,7 @@ public String preprocess(File srcFolder,
         }
         errorLine -= sketch.getCode(errorFile).getPreprocOffset();
 
-        throw new SketchException(tsre.getMessage(),
+        throw new SketchException(message,
                                   errorFile, errorLine, errorColumn);
 
       } else {
 
@@ -85,7 +85,7 @@ public static String getIDName(int id) {
   /**
    * Tones down the jargon in the ecj reported errors.
    */
-  public static String getSimplifiedErrorMessage(IProblem iprob) {
+  public static String getSimplifiedErrorMessage(IProblem iprob, String badCode) {
     if (iprob == null) return null;
 
     String args[] = iprob.getArguments();
@@ -97,6 +97,7 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
       for (String arg : args) {
         Messages.log("Arg " + arg);
       }
+      Messages.log("Bad code: " + badCode);
     }
 
     String result = null;
@@ -111,6 +112,15 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
 
       case IProblem.ParsingErrorDeleteToken:
         if (args.length > 0) {
+          if (args[0].equalsIgnoreCase("Invalid Character")) {
+            result = getErrorMessageForCurlyQuote(badCode);
+          }
+        }
+        break;
+
+      case IProblem.ParsingErrorDeleteTokens:
+        result = getErrorMessageForCurlyQuote(badCode);
+        if (result == null) {
           result = Language.interpolate("editor.status.error_on", args[0]);
         }
         break;
@@ -136,13 +146,16 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
 
       case IProblem.ParsingErrorInvalidToken:
         if (args.length > 0) {
-          if (args[1].equals("VariableDeclaratorId")) {
-            if (args[0].equals("int")) {
+          if (args[0].equals("int")) {
+            if (args[1].equals("VariableDeclaratorId")) {
               result = Language.text("editor.status.reserved_words");
             } else {
               result = Language.interpolate("editor.status.error_on", args[0]);
             }
-          } else {
+          } else if (args[0].equalsIgnoreCase("Invalid Character")) {
+            result = getErrorMessageForCurlyQuote(badCode);
+          }
+          if (result == null) {
             result = Language.interpolate("editor.status.error_on", args[0]);
           }
         }
@@ -165,6 +178,9 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
         }
         break;
 
+      case IProblem.ParsingErrorReplaceTokens:
+        result = getErrorMessageForCurlyQuote(badCode);
+
       case IProblem.UndefinedConstructor:
         if (args.length == 2) {
           String constructorName = args[0];
@@ -230,6 +246,13 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
         }
         break;
 
+      case IProblem.UnterminatedString:
+        if (badCode.contains("“") || badCode.contains("”")) {
+          result = Language.interpolate("editor.status.unterm_string_curly",
+              badCode.replaceAll("[^“”]", ""));
+        }
+        break;
+
       case IProblem.TypeMismatch:
         if (args.length > 1) {
           result = Language.interpolate("editor.status.type_mismatch", args[0], args[1]);
@@ -261,16 +284,17 @@ public static String getSimplifiedErrorMessage(IProblem iprob) {
           result = Language.interpolate("editor.status.hiding_enclosing_type", args[0]);
         }
         break;
+    }
 
-      default:
-        String message = iprob.getMessage();
-        if (message != null) {
-          // Remove all instances of token
-          // "Syntax error on token 'blah', delete this token"
-          Matcher matcher = tokenRegExp.matcher(message);
-          message = matcher.replaceAll("");
-          result = message;
-        }
+    if (result == null) {
+      String message = iprob.getMessage();
+      if (message != null) {
+        // Remove all instances of token
+        // "Syntax error on token 'blah', delete this token"
+        Matcher matcher = tokenRegExp.matcher(message);
+        message = matcher.replaceAll("");
+        result = message;
+      }
     }
 
     if (DEBUG) {
@@ -323,6 +347,20 @@ static private String getErrorMessageForBracket(char c) {
   }
 
 
+  /**
+   * @param badCode The code which may contain curly quotes
+   * @return Friendly error message if there is a curly quote in badCode,
+   *         null otherwise.
+   */
+  static private String getErrorMessageForCurlyQuote(String badCode) {
+    if (badCode.contains("‘") || badCode.contains("’") ||
+        badCode.contains("“") || badCode.contains("”")) {
+      return Language.interpolate("editor.status.bad_curly_quote",
+          badCode.replaceAll("[^‘’“”]", ""));
+    } else return null;
+  }
+
+
 //  static private final String q(Object quotable) {
 //    return "\"" + quotable + "\"";
 //  }
 
@@ -72,15 +72,17 @@ public JavaProblem(String message, int type, int tabIndex, int lineNumber) {
    * @param iProblem - The IProblem which is being wrapped
    * @param tabIndex - The tab number to which the error belongs to
    * @param lineNumber - Line number(pde code) of the error
+   * @param badCode - The code iProblem refers to.
    */
-  public static JavaProblem fromIProblem(IProblem iProblem, int tabIndex, int lineNumber) {
+  public static JavaProblem fromIProblem(IProblem iProblem,
+      int tabIndex, int lineNumber, String badCode) {
     int type = 0;
     if(iProblem.isError()) {
       type = ERROR;
     } else if (iProblem.isWarning()) {
       type = WARNING;
     }
-    String message = ErrorMessageSimplifier.getSimplifiedErrorMessage(iProblem);
+    String message = ErrorMessageSimplifier.getSimplifiedErrorMessage(iProblem, badCode);
     return new JavaProblem(message, type, tabIndex, lineNumber);
   }