[clang] [clang-format] Allow custom pointer/ref alignment in return types (PR #169160)

[via cfe-commits]

================
@@ -5668,31 +5668,107 @@ the configuration (without a prefix: ``Auto``).
 
 .. _PointerAlignment:
 
-**PointerAlignment** (``PointerAlignmentStyle``) :versionbadge:`clang-format 3.7` :ref:`¶ <PointerAlignment>`
+**PointerAlignment** (``PointerAlignmentOptions``) :versionbadge:`clang-format 3.7` :ref:`¶ <PointerAlignment>`
   Pointer and reference alignment style.
 
-  Possible values:
+  Acceptable values (configured as a single string or with suboptions):
+  * ``Left``
+  * ``Right``
+  * ``Middle``
----------------
mydeveloperday wrote:

I don't feel like the "Default" pattern is followed elsewhere, but the Custom pattern is

https://github.com/llvm/llvm-project/pull/169160