Improve trusted-replace-outbound-text scriptlet

As per filter list maintainers feedback.

assets/resources/scriptlets.js

@@ -4782,20 +4782,29 @@ function trustedReplaceOutboundText(
  const extraArgs = safe.getExtraArgs(args);
  const reCondition = safe.patternToRegex(extraArgs.condition || '');
  const reflector = proxyApplyFn(propChain, function(...args) {
- const textBefore = reflector(...args);
+ const encodedTextBefore = reflector(...args);
+ let textBefore = encodedTextBefore;
+ if ( extraArgs.encoding === 'base64' ) {
+ try { textBefore = self.atob(encodedTextBefore); }
+ catch(ex) { return encodedTextBefore; }
+ }
  if ( pattern === '' ) {
- safe.uboLog(logPrefix, 'Outbound text:\n', textBefore);
- return textBefore;
+ safe.uboLog(logPrefix, 'Decoded outbound text:\n', textBefore);
+ return encodedTextBefore;
  }
  reCondition.lastIndex = 0;
- if ( reCondition.test(textBefore) === false ) { return textBefore; }
+ if ( reCondition.test(textBefore) === false ) { return encodedTextBefore; }
  const textAfter = textBefore.replace(rePattern, replacement);
- if ( textAfter === textBefore ) { return textBefore; }
+ if ( textAfter === textBefore ) { return encodedTextBefore; }
  safe.uboLog(logPrefix, 'Matched and replaced');
  if ( safe.logLevel > 1 ) {
- safe.uboLog(logPrefix, 'Modified outbound text:\n', textAfter);
+ safe.uboLog(logPrefix, 'Modified decoded outbound text:\n', textAfter);
+ }
+ let encodedTextAfter = textAfter;
+ if ( extraArgs.encoding === 'base64' ) {
+ encodedTextAfter = self.btoa(textAfter);
  }
- return textAfter;
+ return encodedTextAfter;
  });
 }