Polishing.

Minor formatting.
Replaced a while loop that ends with a return with an if.

See: #5095

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/util/json/ParameterBindingJsonReader.java

@@ -68,8 +68,13 @@ public class ParameterBindingJsonReader extends AbstractBsonReader {
 	private static final Pattern PARAMETER_BINDING_PATTERN = Pattern.compile("\\?(\\d+)");
 	private static final Pattern EXPRESSION_BINDING_PATTERN = Pattern.compile("[\\?:][#$]\\{.*\\}");
 	private static final Pattern SPEL_PARAMETER_BINDING_PATTERN = Pattern.compile("('\\?(\\d+)'|\\?(\\d+))");
+
 	private static final String QUOTE_START = "\\Q";
+	private static final String ESCAPED_QUOTE_START = "\\" + QUOTE_START;
+	private static final String QUOTE_REPLACEMENT_QUOTE_START = Matcher.quoteReplacement(ESCAPED_QUOTE_START);
 	private static final String QUOTE_END = "\\E";
+	private static final String ESCAPED_QUOTE_END = "\\" + QUOTE_END;
+	private static final String QUOTE_REPLACEMENT_QUOTE_END = Matcher.quoteReplacement(ESCAPED_QUOTE_END);
 
 	private final ParameterBindingContext bindingContext;
 
@@ -421,7 +426,7 @@ public class ParameterBindingJsonReader extends AbstractBsonReader {
 
 		Matcher regexMatcher = EXPRESSION_BINDING_PATTERN.matcher(computedValue);
 
-		while (regexMatcher.find()) {
+		if (regexMatcher.find()) {
 
 			String binding = regexMatcher.group();
 			String expression = binding.substring(3, binding.length() - 1);
@@ -461,8 +466,8 @@ public class ParameterBindingJsonReader extends AbstractBsonReader {
 
 			String bindValue = nullSafeToString(getBindableValueForIndex(index));
 			if(isQuoted(tokenValue)) {
-				bindValue = bindValue.replaceAll("\\%s".formatted(QUOTE_START), Matcher.quoteReplacement("\\%s".formatted(QUOTE_START))) //
-					.replaceAll("\\%s".formatted(QUOTE_END), Matcher.quoteReplacement("\\%s".formatted(QUOTE_END)));
+				bindValue = bindValue.replaceAll(ESCAPED_QUOTE_START, QUOTE_REPLACEMENT_QUOTE_START) //
+					.replaceAll(ESCAPED_QUOTE_END, QUOTE_REPLACEMENT_QUOTE_END);
 			}
 			computedValue = computedValue.replace(group, bindValue);
 		}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/AbstractPersonRepositoryIntegrationTests.java

@@ -728,7 +728,7 @@ public abstract class AbstractPersonRepositoryIntegrationTests implements Dirtie
 		assertThat(result.get(0)).isEqualTo(dave);
 	}
 
-	@Test // DATAMONGO-770
+	@Test
 	void findByFirstnameStartingWith() {
 
 		String inputString = "\\E.*\\Q";