[GR-28188] Is not possible to write in REPL formatted multiline text

PullRequest: graalpython/1670

Author: ppisl

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/parser/antlr/DescriptiveBailErrorListener.java

@@ -170,6 +170,10 @@ private static PIncompleteSourceException handleRecognitionException(IntervalSet
             }
         }
 
+        if (tokenId == Python3Parser.NEWLINE && (et.contains(Python3Parser.FINALLY) || et.contains(Python3Parser.EXCEPT))) {
+            return new PIncompleteSourceException("", null, -1);
+        }
+
         if ((tokenId != Python3Parser.INDENT_ERROR && tokenId != Python3Parser.TAB_ERROR && tokenId != Python3Parser.INDENT && tokenId != Python3Parser.DEDENT) &&
                         (et.contains(Python3Parser.INDENT) || et.contains(Python3Parser.NEWLINE) && et.size() == 1)) {
             return new PIncompleteSourceException(message, cause, line);
@@ -186,6 +190,12 @@ private static PIncompleteSourceException handleInteractiveException(Recognizer<
         if (tokenId == Python3Parser.LONG_QUOTES1 || tokenId == Python3Parser.LONG_QUOTES2) {
             return new PIncompleteSourceException("", null, -1);
         }
+        if (tokenId == Python3Parser.UNKNOWN_CHAR) {
+            String text = token.getText();
+            if (text.startsWith("\'") || text.startsWith("\"")) {
+                return new PIncompleteSourceException("", null, -1);
+            }
+        }
         if (isOpened(((Python3Parser) recognizer).getTokenStream())) {
             // The assumption is:
             // Look ahead and if there are other tokens (except new lines and EOF),