Special cases to avoid // in combines path.

- `merge_paths` does correctly handle the merging of paths with double `/` in the combined path.
- `mount_endpoints_and_merged_docs!` does avoid combined paths with double `/`.

okapi/CHANGELOG.md

@@ -2,11 +2,12 @@
 All notable changes to this project will be documented in this file.
 This project follows the [Semantic Versioning standard](https://semver.org/).
 
-## Unreleased (2021-xx-xx)
+## Unreleased (2022-xx-xx)
 
 ### Added
 
 ### Changed
+- `merge_paths` does correctly handle the merging of paths with double `/` in the combined path.
 
 ### Deprecated
 

okapi/src/merge.rs

@@ -88,7 +88,15 @@ pub fn merge_paths<S: Display>(
     // (if key does not already exists)
     for (key, value) in s2 {
         let new_key = if key.starts_with('/') {
-            format!("{}{}", path_prefix, key)
+            // Check if both the prefix ends with a `/` and key starts with one.
+            let mut path_prefix = path_prefix.to_string();
+            if path_prefix.ends_with('/') {
+                // Avoid a double `/`
+                path_prefix.pop();
+                format!("{}{}", path_prefix, key)
+            } else {
+                format!("{}{}", path_prefix, key)
+            }
         } else {
             log::error!(
                 "All routes should have a leading '/' but non found in `{}`.",

rocket-okapi/CHANGELOG.md

@@ -13,6 +13,7 @@ This project follows the [Semantic Versioning standard](https://semver.org/).
 ### Removed
 
 ### Fixed
+- `mount_endpoints_and_merged_docs!` does avoid combined paths with double `/`.
 
 ### Security