* support S0EP00 pattern

* added numeric sequence match differentiation step to improve support for generic season/episode patterns

source/net/sourceforge/filebot/similarity/EpisodeMetrics.java

@@ -209,9 +209,9 @@ public enum EpisodeMetrics implements SimilarityMetric {
 		
 		@Override
 		public float getSimilarity(Object o1, Object o2) {
-			// normalize absolute similarity to similarity rank (5 ranks in total),
+			// normalize absolute similarity to similarity rank (4 ranks in total),
 			// so we are less likely to fall for false positives in this pass, and move on to the next one
-			return (float) (floor(super.getSimilarity(o1, o2) * 5) / 5);
+			return (float) (floor(super.getSimilarity(o1, o2) * 4) / 4);
 		}
 		
 		
@@ -222,6 +222,15 @@ public enum EpisodeMetrics implements SimilarityMetric {
 		}
 	}),
 	
+	NumericSequence(new SequenceMatchSimilarity() {
+		
+		@Override
+		protected String normalize(Object object) {
+			// simplify file name, if possible
+			return normalizeObject(object).replaceAll("\\D+", " ").trim();
+		}
+	}),
+	
 	// Match by generic numeric similarity
 	Numeric(new NumericSimilarityMetric() {
 		
@@ -402,9 +411,9 @@ public enum EpisodeMetrics implements SimilarityMetric {
 		// 7 pass: prefer episodes that were aired closer to the last modified date of the file
 		// 8 pass: resolve remaining collisions via absolute string similarity
 		if (includeFileMetrics) {
-			return new SimilarityMetric[] { FileSize, new MetricCascade(FileName, EpisodeFunnel), EpisodeBalancer, SubstringFields, MetaAttributes, new MetricCascade(SubstringSequence, Name), Numeric, Name, TimeStamp, new NameSimilarityMetric() };
+			return new SimilarityMetric[] { FileSize, new MetricCascade(FileName, EpisodeFunnel), EpisodeBalancer, SubstringFields, MetaAttributes, new MetricCascade(SubstringSequence, Name), Numeric, NumericSequence, Name, TimeStamp, new NameSimilarityMetric() };
 		} else {
-			return new SimilarityMetric[] { EpisodeFunnel, EpisodeBalancer, SubstringFields, MetaAttributes, new MetricCascade(SubstringSequence, Name), Numeric, Name, TimeStamp, new NameSimilarityMetric() };
+			return new SimilarityMetric[] { EpisodeFunnel, EpisodeBalancer, SubstringFields, MetaAttributes, new MetricCascade(SubstringSequence, Name), Numeric, NumericSequence, Name, TimeStamp, new NameSimilarityMetric() };
 		}
 	}
 	

source/net/sourceforge/filebot/similarity/NumericSimilarityMetric.java

@@ -3,7 +3,7 @@ package net.sourceforge.filebot.similarity;
 
 
 import java.util.ArrayList;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.Scanner;
 import java.util.Set;
 
@@ -61,7 +61,7 @@ public class NumericSimilarityMetric implements SimilarityMetric {
 		
 		@Override
 		public Set<String> tokenizeToSet(String input) {
-			return new HashSet<String>(tokenizeToArrayList(input));
+			return new LinkedHashSet<String>(tokenizeToArrayList(input));
 		}
 		
 		
@@ -76,7 +76,6 @@ public class NumericSimilarityMetric implements SimilarityMetric {
 			return delimiter;
 		}
 		
-
 		private InterfaceTermHandler stopWordHandler = new DummyStopTermHandler();
 		
 		

source/net/sourceforge/filebot/similarity/SeasonEpisodeMatcher.java

@@ -29,7 +29,7 @@ public class SeasonEpisodeMatcher {
 		patterns[0] = new SeasonEpisodePattern(null, "(?<!\\p{Alnum})(?i:season|series)[^\\p{Alnum}]{0,3}(\\d{1,4})[^\\p{Alnum}]{0,3}(?i:episode)[^\\p{Alnum}]{0,3}(\\d{1,4})[^\\p{Alnum}]{0,3}(?!\\p{Digit})");
 		
 		// match patterns like S01E01, s01e02, ... [s01]_[e02], s01.e02, s01e02a, s2010e01 ... s01e01-02-03-04, [s01]_[e01-02-03-04] ...
-		patterns[1] = new SeasonEpisodePattern(null, "(?<!\\p{Digit})[Ss](\\d{1,2}|\\d{4})[^\\p{Alnum}]{0,3}[Ee](((?<=[^._ ])[Ee]?\\d{1,3}(\\D|$))+)") {
+		patterns[1] = new SeasonEpisodePattern(null, "(?<!\\p{Digit})[Ss](\\d{1,2}|\\d{4})[^\\p{Alnum}]{0,3}[Ee][Pp]?(((?<=[^._ ])[Ee]?[Pp]?\\d{1,3}(\\D|$))+)") {
 			
 			@Override
 			protected Collection<SxE> process(MatchResult match) {