Fix path segment handling of encoded values

Fixes: quarkusio#34586

independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/mapping/RequestMapper.java

@@ -85,7 +85,7 @@ private RequestMatch<T> mapFromPathMatcher(String path, PathMatcher.PathMatch<Ar
                     }
                     matchPos = matcher.end();
                     for (String group : segment.groups) {
-                        params[paramCount++] = URIDecoder.decodeURIComponent(matcher.group(group), false);
+                        params[paramCount++] = matcher.group(group);
                     }
                 } else if (segment.type == URITemplate.Type.LITERAL) {
                     //make sure the literal text is the same

independent-projects/resteasy-reactive/server/vertx/src/test/java/org/jboss/resteasy/reactive/server/vertx/test/matching/PathSegmentTest.java

@@ -0,0 +1,58 @@
+package org.jboss.resteasy.reactive.server.vertx.test.matching;
+
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.CoreMatchers.is;
+
+import java.util.List;
+import java.util.function.Supplier;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.core.PathSegment;
+
+import org.jboss.resteasy.reactive.server.vertx.test.framework.ResteasyReactiveUnitTest;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public class PathSegmentTest {
+
+    @RegisterExtension
+    static ResteasyReactiveUnitTest test = new ResteasyReactiveUnitTest()
+            .setArchiveProducer(new Supplier<>() {
+                @Override
+                public JavaArchive get() {
+                    return ShrinkWrap.create(JavaArchive.class)
+                            .addClass(Resource.class);
+                }
+            });
+
+    @Test
+    public void testRegularMatch() {
+        given()
+                .when().get("/test/list/{seg1}/{seg2}", "key1", "key2")
+                .then()
+                .statusCode(200)
+                .body(is("Path(2): [key1, key2]"));
+    }
+
+    @Test
+    public void testEncodedPath() {
+        given()
+                .when().get("/test/list/{seg1}/{seg2}", "key/1", "key/2")
+                .then()
+                .statusCode(200)
+                .body(is("Path(2): [key/1, key/2]"));
+    }
+
+    @Path("/test")
+    public static class Resource {
+        @GET
+        @Path("/list/{primaryKey: .+}")
+        public String pathAsList(@PathParam("primaryKey") List<PathSegment> path) {
+            return String.format("Path(%d): %s", path.size(), path);
+        }
+    }
+}