Merge pull request #148 from fglock/fix-q-sequences-safe

Fix \Q idempotence in quotemeta mode

Author: fglock

src/main/java/org/perlonjava/parser/StringDoubleQuoted.java

@@ -357,6 +357,9 @@ protected void parseEscapeSequence() {
                     applyCaseModifier(caseModifiers.pop());
                 }
                 inQuotemeta = false;
+            } else if (token.text.startsWith("Q")) {
+                // In quotemeta mode, \Q is idempotent and should be ignored.
+                TokenUtils.consumeChar(parser);
             } else {
                 // Everything else is literal, including the backslash
                 currentSegment.append("\\");