⚡ Bolt: [performance improvement] Replace regex replacement with literal String.replace

.jules/bolt.md

@@ -0,0 +1,3 @@
+## 2026-05-09 - Avoid Pre-compiled Regex for Literal Replacements
+**Learning:** In modern JDKs (Java 21 used here), `String.replace()` without regex compilation overhead is significantly faster and cleaner for exact string matches than `Pattern.compile().matcher().replaceAll()`.
+**Action:** When finding micro-optimizations, look for regex replacements that use literal escaping (e.g., `\Q...\E` or literal `.*` replacements) and convert them to simple `String.replace()`.

org.moreunit.core.test/test/org/moreunit/core/matching/FileNameEvaluationTest.java

@@ -42,4 +42,25 @@ public void should_convert_regex_to_eclipse_search_pattern() throws Exception
         // then
         assertThat(eval.getAllCorrespondingFileEclipsePatterns()).containsExactly("Pre*File*Suf", "Pre*File", "File*Suf");
     }
+
+    @Test
+    public void should_identify_as_test_file() throws Exception
+    {
+        // given
+        FileNameEvaluation eval = new FileNameEvaluation("IrrelevantTest", true, "Irrelevant", NO_PATTERNS, NO_PATTERNS);
+
+        // then
+        assertThat(eval.isTestFile()).isTrue();
+        assertThat(eval.getPreferredCorrespondingFileName()).isEqualTo("Irrelevant");
+    }
+
+    @Test
+    public void should_generate_to_string() throws Exception
+    {
+        // given
+        FileNameEvaluation eval = new FileNameEvaluation("IrrelevantTest", true, "Irrelevant", NO_PATTERNS, NO_PATTERNS);
+
+        // then
+        assertThat(eval.toString()).contains("IrrelevantTest");
+    }
 }

org.moreunit.core/src/org/moreunit/core/matching/FileNameEvaluation.java

@@ -3,7 +3,6 @@
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
-import java.util.regex.Pattern;
 
 import org.moreunit.core.util.StringConstants;
 
@@ -21,10 +20,6 @@
  */
 public final class FileNameEvaluation
 {
-    private static final Pattern QUOTE_SEPARATORS = Pattern.compile("(?:\\\\Q|\\\\E)");
-    private static final Pattern SUCCESSIVE_QUOTE_SEPARATORS = Pattern.compile("\\\\E\\\\Q");
-    private static final Pattern WILDCARDS = Pattern.compile("\\.\\*");
-
     private final String evaluatedFileName;
     private final boolean testFile;
     private final Collection<String> otherCorrespondingFilePatterns;
@@ -42,10 +37,11 @@ public FileNameEvaluation(String evaluatedFileName, boolean testFile, String pre
 
     private static Collection<String> simplify(Collection<String> patterns)
     {
-        List<String> result = new ArrayList<String>();
+        List<String> result = new ArrayList<>();
         for (String pattern : patterns)
         {
-            result.add(SUCCESSIVE_QUOTE_SEPARATORS.matcher(pattern).replaceAll(""));
+            // Replaces regex matching of \E\Q with literal replacement
+            result.add(pattern.replace("\\E\\Q", ""));
         }
         return result;
     }
@@ -83,7 +79,8 @@ public List<String> getAllCorrespondingFileEclipsePatterns()
 
     private String convertWildcards(String str)
     {
-        return WILDCARDS.matcher(str).replaceAll("*");
+        // Replaces regex matching of .* with literal replacement
+        return str.replace(".*", "*");
     }
 
     /**
@@ -126,7 +123,8 @@ public String getPreferredCorrespondingFileName()
 
     private String removeQuotes(String str)
     {
-        return QUOTE_SEPARATORS.matcher(str).replaceAll("");
+        // Replaces regex matching of (?:\\Q|\\E) with literal replacement
+        return str.replace("\\Q", "").replace("\\E", "");
     }
 
     @Override