Filter containing asterisk followed by equals sign does not match

[mjethani]

This is based on the adblocker-benchmarks package:

npm install
make deps
make ublock DEBUG=1
make cliqz DEBUG=1 COMPARE=ublock.debug.json
cat cliqz.diff.json

cliqz.diff.json

[
  {
    "index": 49931,
    "url": "https://src.ebay-us.com/800u3jujhrtna4oy.js?t2h0syoxz29o70at=usllpic0&m4g3fbcsoflgkza2=31ceded617b0a69c2824c2d9fffd7bf3",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31ceded617b0a69c2824c2d9fffd7bf3",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 54637,
    "url": "https://src.ebay-us.com/ogt03wuuyq02o439.js?b0ng6y3956rv7z5l=usllpic0&p92vm2xpizpewx4q=31c65d0317b0a770e5eefd4ffffce40c",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31c65d0317b0a770e5eefd4ffffce40c",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 54691,
    "url": "https://src.ebay-us.com/hwmad1apj64n3dpx.js?ugs0m7pwid2lkdh5=usllpic0&4xe1mk1zhq54nvk7=31c6677517b0acf066401d61fffdca35",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31c6677517b0acf066401d61fffdca35",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 76205,
    "url": "https://src.ebay-us.com/gkcqo9woje6b22wb.js?uotokwwa26hnv3n3=usllpic0&ggrewltfacjqqswc=31c6919417b0a770463e7659fffd1f75",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31c6919417b0a770463e7659fffd1f75",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 130603,
    "url": "https://src.ebay-us.com/acayc2ovn9r4q8uf.js?ykei92uevqwds9ca=usllpic0&ti08yepck3nud6l9=31c850b917b0addd8d576ddbfffe417d",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31c850b917b0addd8d576ddbfffe417d",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 181612,
    "url": "https://src.ebay-us.com/93pchd9jjazbx1mf.js?ulmpfvmebou1uhdn=usllpic0&t7lbneicj2p7pe7b=31c83afd17b0acb47847ed87fffcdeee",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31c83afd17b0acb47847ed87fffcdeee",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  },
  {
    "index": 204046,
    "url": "https://src.ebay-us.com/ofc8lb2zw9xlwgan.js?8kkzfaannqhvf4w3=usllpic0&3ovsbiogi5cyl9c9=31ceb2d517b0a45e36136c3cfffba69d",
    "frameUrl": "https://pages.ebay.com/identity/device/t_n6.html?org_id=usllpic0&session_id=31ceb2d517b0a45e36136c3cfffba69d",
    "cpt": "script",
    "match": false,
    "matchDebug": null,
    "compareMatchDebug": "||src.ebay-us.com/*=usllpic$script,domain=ebay.com",
    "kind": "false -ve"
  }
]

Expected result

The URL https://src.ebay-us.com/ofc8lb2zw9xlwgan.js?8kkzfaannqhvf4w3=usllpic0&3ovsbiogi5cyl9c9=31ceb2d517b0a45e36136c3cfffba69d should be blocked by the filter ||src.ebay-us.com/*=usllpic$script,domain=ebay.com

Actual result

The URL is not blocked.

More details

It's the same filter each time: ||src.ebay-us.com/*=usllpic$script,domain=ebay.com. It's matched by uBlock Origin but not by Cliqz.

If the = before usllpic is removed, it works.

If the = is replaced with a ^, it still does not work.

[mjethani]

This is interesting.

If the filter is by itself, it matches.

[mjethani]

If the filter is by itself, it matches.

Narrowed it down to this combination from EasyPrivacy:

||ir.ebaystatic.com/rs/c/9527tracking/configuration.js$script,domain=ebay.com
||src.ebay-us.com/*=usllpic$script,domain=ebay.com

The above combination does not match, but if the first filter is removed then the second filter matches.

This must have something to do with tokenization.

[mjethani]

This must have something to do with tokenization.

usllpic is be being considered a token when it really shouldn't be, because it's at the end of the pattern.

I have a fix: #2187

[mjethani]

I have a fix: #2187

Fixed.