[lldb] [llvm] [lldb] Add new per-language frame-format variables for formatting function names (PR #131836)

[via llvm-commits]

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@@ -2074,6 +2076,64 @@ static const Definition *FindEntry(const llvm::StringRef &format_str,
   return parent;
 }
 
+/// Parses a single highlighting format specifier.
+///
+/// Example syntax for such specifier:
+/// \code
+/// ${function.name-with-args:%highlight_basename(ansi.fg.green)}
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jimingham wrote:

Do we need this extra `language` node at all?  After all `plugin.cplusplus` already says this is a language setting?  And it's pretty clear that `settings set plugin.cplusplus.function-name-format <whatever>` is setting that format for the language cplusplus.  So that extra node doesn't seem to be expressing anything useful. 

If we do need a node, maybe something like `display` because this is setting that has to do with `display` of something for that language, and we might add more language specific display options?

https://github.com/llvm/llvm-project/pull/131836