[clang] [clang-format] Add an option to format integer and float literal case (PR #151590)

[via cfe-commits]

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@@ -3558,6 +3558,74 @@ struct FormatStyle {
   /// \version 9
   std::vector<std::string> NamespaceMacros;
 
+  /// Control over each component in a numeric literal.
+  enum NumericLiteralComponentStyle : int8_t {
+    /// Leave this component of the literal as is.
+    NLCS_Leave,
+    /// Format this component with upper case characters.
+    NLCS_Upper,
+    /// Format this component with lower case characters.
+    NLCS_Lower,
+  };
+
+  /// Separate control for each numeric literal component.
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owenca wrote:

Can you add an example config below using https://github.com/llvm/llvm-project/pull/151590#issuecomment-3148783502? See https://github.com/llvm/llvm-project/blob/7d35e29d7a7f89c828e91c03d3827a43deaa5dec/clang/include/clang/Format/Format.h#L3109-L3117.

https://github.com/llvm/llvm-project/pull/151590