[clang] [clang-format] allow short function body on a single line (PR #151428)

[Lidong Yan via cfe-commits]

================
@@ -3829,6 +3829,23 @@ struct FormatStyle {
   /// \version 13
   int PPIndentWidth;
 
+  /// Dependent on the value, function body can be put on a single line.
+  /// Automatically enabled when
+  /// `AllowShortFunctionsOnASingleLine` is set to `None` and
+  /// `AllowShortBlocksOnASingleLine` is set to `Always`.
----------------
brandb97 wrote:

Then I will remove this feature, user will use `PutShortFunctionBodiesOnASingleLine` to control function body format rather than use two options which is more complex.

https://github.com/llvm/llvm-project/pull/151428