Fix reachability argfile format

Update the argfile to a format that actually works when
passed to the `native-image` command.

See gh-32738

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/tasks/bundling/BootZipCopyAction.java

@@ -369,15 +369,14 @@ class BootZipCopyAction implements CopyAction {
 					}
 				}
 			}
-			// https://docs.oracle.com/en/java/javase/18/docs/specs/man/java.html#java-command-line-argument-files
 			if (excludes != null) {
 				List<String> args = new ArrayList<>();
 				for (String exclude : excludes) {
 					int lastSlash = exclude.lastIndexOf('/');
 					String jar = (lastSlash != -1) ? exclude.substring(lastSlash + 1) : exclude;
 					args.add("--exclude-config");
-					args.add("\"" + Pattern.quote(jar).replace("\\", "\\\\") + "\"");
-					args.add("\"^/META-INF/native-image/.*\"");
+					args.add(Pattern.quote(jar));
+					args.add("^/META-INF/native-image/.*");
 				}
 				ZipEntryContentWriter writer = ZipEntryContentWriter.fromLines(BootZipCopyAction.this.encoding, args);
 				writeEntry("META-INF/native-image/argfile", writer, true);

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/bundling/BootJarTests.java

@@ -189,8 +189,8 @@ class BootJarTests extends AbstractBootArchiveTests<BootJar> {
 	void nativeImageArgFileWithExcludesIsWritten() throws IOException {
 		try (JarFile jarFile = new JarFile(createLayeredJar(true))) {
 			assertThat(entryLines(jarFile, "META-INF/native-image/argfile")).containsExactly("--exclude-config",
-					"\"\\\\Qfirst-library.jar\\\\E\"", "\"^/META-INF/native-image/.*\"", "--exclude-config",
-					"\"\\\\Qsecond-library.jar\\\\E\"", "\"^/META-INF/native-image/.*\"");
+					"\\Qfirst-library.jar\\E", "^/META-INF/native-image/.*", "--exclude-config",
+					"\\Qsecond-library.jar\\E", "^/META-INF/native-image/.*");
 		}
 	}
 

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Packager.java

@@ -241,15 +241,14 @@ public abstract class Packager {
 				}
 			}
 		}
-		// https://docs.oracle.com/en/java/javase/18/docs/specs/man/java.html#java-command-line-argument-files
 		if (!excludes.isEmpty()) {
 			List<String> args = new ArrayList<>();
 			for (String exclude : excludes) {
 				int lastSlash = exclude.lastIndexOf('/');
 				String jar = (lastSlash != -1) ? exclude.substring(lastSlash + 1) : exclude;
 				args.add("--exclude-config");
-				args.add("\"" + Pattern.quote(jar).replace("\\", "\\\\") + "\"");
-				args.add("\"^/META-INF/native-image/.*\"");
+				args.add(Pattern.quote(jar));
+				args.add("^/META-INF/native-image/.*");
 			}
 			String contents = args.stream().collect(Collectors.joining("\n")) + "\n";
 			writer.writeEntry("META-INF/native-image/argfile",

spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/test/java/org/springframework/boot/loader/tools/AbstractPackagerTests.java

@@ -643,11 +643,11 @@ abstract class AbstractPackagerTests<P extends Packager> {
 
 		List<String> expected = new ArrayList<>();
 		expected.add("--exclude-config");
-		expected.add("\"\\\\Q" + libraryOne.getName() + "\\\\E\"");
-		expected.add("\"^/META-INF/native-image/.*\"");
+		expected.add("\\Q" + libraryOne.getName() + "\\E");
+		expected.add("^/META-INF/native-image/.*");
 		expected.add("--exclude-config");
-		expected.add("\"\\\\Q" + libraryTwo.getName() + "\\\\E\"");
-		expected.add("\"^/META-INF/native-image/.*\"");
+		expected.add("\\Q" + libraryTwo.getName() + "\\E");
+		expected.add("^/META-INF/native-image/.*");
 		assertThat(getPackagedEntryContent("META-INF/native-image/argfile"))
 				.isEqualTo(expected.stream().collect(Collectors.joining("\n")) + "\n");
 	}