[clang] [clang-format] Add option AllowShortRecordOnASingleLine (PR #154580)

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=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>,
=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>,
=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>,
=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>,
=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>,
=?utf-8?q?Tomáš?= Slanina <itzexpoexpo at gmail.com>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/154580 at github.com>


================
@@ -1553,6 +1563,7 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
   LLVMStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
   LLVMStyle.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Never;
   LLVMStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
+  LLVMStyle.AllowShortRecordOnASingleLine = FormatStyle::SRS_Never;
----------------
owenca wrote:

> We would expect:
> 
> ```c++
> class foo
> {};
> 
> class bar
> {
>   int i;
> };

Isn't that exactly what we would get?
```
$ cat .clang-format
BasedOnStyle: LLVM
BreakBeforeBraces: Custom
BraceWrapping:
  AfterClass: true
  SplitEmptyRecord: false
$ cat a.cc
class foo {};

class bar {
  int i;
};
$ clang-format -version
clang-format version 20.1.8
$ clang-format a.cc
class foo
{};

class bar
{
  int i;
};
```

https://github.com/llvm/llvm-project/pull/154580