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Improve token extraction from regex-based filters
Tokens which are as long or longer than the max token length possible do not need to have the prefix part evaluated against special regex characters. This will help increase the likelihood of extracting a valid token from regex-based filters. Actual case found in EasyPrivacy: /^https?:\/\/eulerian..*\/[a-z0-9]{2,12}\.js/$script Before this commit, uBO was not able to extract a valid token, while now uBO is able to extract `eulerian` as a valid token (consequently the regex-based filter will now be evaluated only when the token `euleria` is found in a URL).
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@ -2591,8 +2591,12 @@ const FilterParser = class {
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const prefix = s.slice(0, matches.index);
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const prefix = s.slice(0, matches.index);
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if ( this.reRegexTokenAbort.test(prefix) ) { return; }
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if ( this.reRegexTokenAbort.test(prefix) ) { return; }
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if (
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if (
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this.reRegexBadPrefix.test(prefix) ||
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this.reRegexBadPrefix.test(prefix) || (
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this.reRegexBadSuffix.test(s.slice(this.reRegexToken.lastIndex))
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matches[0].length < this.maxTokenLen &&
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this.reRegexBadSuffix.test(
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s.slice(this.reRegexToken.lastIndex)
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)
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)
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) {
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) {
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continue;
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continue;
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}
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}
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