[clang] [clang-format] Add AllowShortType option for AlwaysBreakAfterReturnType. (PR #78011)

[Owen Pan via cfe-commits]

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@@ -326,11 +326,13 @@ bool ContinuationIndenter::canBreak(const LineState &State) {
     return false;
   }
 
-  // Don't break after very short return types (e.g. "void") as that is often
-  // unexpected.
-  if (Current.is(TT_FunctionDeclarationName) && State.Column < 6) {
-    if (Style.AlwaysBreakAfterReturnType == FormatStyle::RTBS_None)
+  if (Style.AlwaysBreakAfterReturnType == FormatStyle::RTBS_None) {
+    // Don't break after very short return types (e.g. "void") as that is often
+    // unexpected.
+    if (Current.is(TT_FunctionDeclarationName) &&
+        State.Column - State.FirstIndent < 6) {
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owenca wrote:

We probably need to assert that `State.Column >= State.FirstIndent`.

https://github.com/llvm/llvm-project/pull/78011