Trim end of class tokens in generic cosmetic filtering's surveyor

Related issue: uBlockOrigin/uBlock-issues#3257
gorhill · May 28, 2024 · 8ea1bac · 8ea1bac
1 parent ce7806e
commit 8ea1bac
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/platform/mv3/extension/js/scripting/css-generic.js b/platform/mv3/extension/js/scripting/css-generic.js
@@ -89,8 +89,10 @@ const uBOL_classesFromNode = (node, out) => {
  end = s.indexOf(' ', beg);
  if ( end === beg ) { continue; }
  if ( end === -1 ) { end = len; }
- out.push(hashFromStr(0x2E /* '.' */, s.slice(beg, end)));
+ const token = s.slice(beg, end).trimEnd();
  beg = end;
+ if ( token.length === 0 ) { continue; }
+ out.push(hashFromStr(0x2E /* '.' */, token));
  }
 };
 

diff --git a/src/js/contentscript.js b/src/js/contentscript.js
@@ -1016,8 +1016,10 @@ vAPI.DOMFilterer = class {
  end = s.indexOf(' ', beg);
  if ( end === beg ) { continue; }
  if ( end === -1 ) { end = len; }
- const hash = hashFromStr(0x2E /* '.' */, s.slice(beg, end));
+ const token = s.slice(beg, end).trimEnd();
  beg = end;
+ if ( token.length === 0 ) { continue; }
+ const hash = hashFromStr(0x2E /* '.' */, token);
  if ( queriedHashes.has(hash) ) { continue; }
  queriedHashes.add(hash);
  out.push(hash);