[clang-format] Add BinPackLongBracedList style option (#112482)

The use of Cpp11BracedListStyle with BinPackArguments=False avoids bin
packing until reaching a hard-coded limit of 20 items. This is an
arbitrary choice. Introduce a new style option to allow disabling this
limit.

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 387daad..0898b69 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -995,6 +995,7 @@ template <> struct MappingTraits<FormatStyle> {
                    Style.AlwaysBreakBeforeMultilineStrings);
     IO.mapOptional("AttributeMacros", Style.AttributeMacros);
     IO.mapOptional("BinPackArguments", Style.BinPackArguments);
+    IO.mapOptional("BinPackLongBracedList", Style.BinPackLongBracedList);
     IO.mapOptional("BinPackParameters", Style.BinPackParameters);
     IO.mapOptional("BitFieldColonSpacing", Style.BitFieldColonSpacing);
     IO.mapOptional("BracedInitializerIndentWidth",
@@ -1507,6 +1508,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
   LLVMStyle.AlwaysBreakBeforeMultilineStrings = false;
   LLVMStyle.AttributeMacros.push_back("__capability");
   LLVMStyle.BinPackArguments = true;
+  LLVMStyle.BinPackLongBracedList = true;
   LLVMStyle.BinPackParameters = FormatStyle::BPPS_BinPack;
   LLVMStyle.BitFieldColonSpacing = FormatStyle::BFCS_Both;
   LLVMStyle.BracedInitializerIndentWidth = std::nullopt;