Only skip ..-prefixed locations when found via wildcard

Closes gh-23983

Author: wilkinsona

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/ConfigFileApplicationListener.java

@@ -522,7 +522,7 @@ private void load(PropertySourceLoader loader, String location, Profile profile,
 						}
 						continue;
 					}
-					if (resource.isFile() && hasHiddenPathElement(resource)) {
+					if (resource.isFile() && isPatternLocation(location) && hasHiddenPathElement(resource)) {
 						if (this.logger.isTraceEnabled()) {
 							StringBuilder description = getDescription("Skipped location with hidden path element ",
 									location, resource, profile);
@@ -588,7 +588,7 @@ private String getLocationName(String location, Resource resource) {
 
 		private Resource[] getResources(String location) {
 			try {
-				if (location.contains("*")) {
+				if (isPatternLocation(location)) {
 					return getResourcesFromPatternLocation(location);
 				}
 				return new Resource[] { this.resourceLoader.getResource(location) };
@@ -598,6 +598,10 @@ private Resource[] getResources(String location) {
 			}
 		}
 
+		private boolean isPatternLocation(String location) {
+			return location.contains("*");
+		}
+
 		private Resource[] getResourcesFromPatternLocation(String location) throws IOException {
 			String directoryPath = location.substring(0, location.indexOf("*/"));
 			Resource resource = this.resourceLoader.getResource(directoryPath);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/config/ConfigFileApplicationListenerTests.java

@@ -1091,6 +1091,16 @@ void locationsWithWildcardDirectoriesShouldIgnoreHiddenDirectories() {
 		assertThat(this.environment.getProperty("fourth.property")).isNull();
 	}
 
+	@Test
+	void nonWildcardHiddenDirectoryLocationShouldNotBeIgnored() {
+		String location = "file:src/test/resources/config/..hidden/";
+		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.environment,
+				"spring.config.location=" + location);
+		this.initializer.setSearchNames("testproperties");
+		this.initializer.postProcessEnvironment(this.environment, this.application);
+		assertThat(this.environment.getProperty("fourth.property")).isNotNull();
+	}
+
 	@Test
 	void locationsWithWildcardDirectoriesShouldLoadAllFilesThatMatch() {
 		String location = "file:src/test/resources/config/*/";