fs/Path: add operator+

src/fs/AllocatedPath.hxx

@@ -85,6 +85,18 @@ public:
 		return Path::FromFS(c_str());
 	}
 
+	/**
+	 * Concatenate two paths.
+	 */
+	[[gnu::pure]]
+	static AllocatedPath Concat(string_view a, string_view b) noexcept {
+		AllocatedPath result{nullptr};
+		result.value.reserve(a.size() + b.size());
+		result.value.assign(a);
+		result.value.append(b);
+		return result;
+	}
+
 	/**
 	 * Join two path components with the path separator.
 	 */

src/fs/Path.hxx

@@ -191,6 +191,13 @@ public:
 	const_pointer GetExtension() const noexcept;
 };
 
+/**
+ * Concatenate a string to a #Path object.
+ */
+[[gnu::pure]]
+AllocatedPath
+operator+(Path path, PathTraitsFS::string_view other) noexcept;
+
 /**
  * Concatenate two path components using the directory separator.
  *

src/fs/Path2.cxx

@@ -34,6 +34,12 @@ Path::WithSuffix(const_pointer new_suffix) const noexcept
 	return result;
 }
 
+AllocatedPath
+operator+(Path a, PathTraitsFS::string_view b) noexcept
+{
+	return AllocatedPath::Concat(a.c_str(), b);
+}
+
 AllocatedPath
 operator/(Path a, Path b) noexcept
 {