[clang-format] Honour PointerAlignment in statements with initializers.

[curdeius]

Summary

Fixes https://github.com/llvm/llvm-project/issues/53843.

[HazardyKnusperkeks]

Creating your own bug and fixing it within 10 minutes. Nice. ;)

clang/lib/Format/TokenAnnotator.cpp

if (Left.is(TT_PointerOrReference)) {
     // FIXME: Setting IsMultiVariableDeclStmt for the whole line is error-prone,
     // because it does not take into account nested scopes like lambdas.
     // In multi-variable declaration statements, attach */& to the variable
     // independently of the style. However, avoid doing it if we are in a nested
     // scope, e.g. lambda. We still need to special-case statements with
     // initializers.
     if (Line.IsMultiVariableDeclStmt &&
         (Left.NestingLevel == Line.First->NestingLevel ||
-         startsWithInitStatement(Line)))
+         ((Left.NestingLevel == Line.First->NestingLevel + 1) &&
+          startsWithInitStatement(Line))))
       return false;
     return Left.Previous && !Left.Previous->isOneOf(
                                 tok::l_paren, tok::coloncolon, tok::l_square);
   }
   // Ensure right pointer alignment with ellipsis e.g. int *...P
   if (Left.is(tok::ellipsis) && Left.Previous &&
       Left.Previous->isOneOf(tok::star, tok::amp, tok::ampamp))
     return Style.PointerAlignment != FormatStyle::PAS_Right;

clang/unittests/Format/FormatTest.cpp

TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
   verifyFormat("if (int *p, *q; p != q) {\n  p = p->next;\n}", Style);
   verifyFormat("/*comment*/ if (int *p, *q; p != q) {\n  p = p->next;\n}",
                Style);
   verifyFormat("switch (int *p, *q; p != q) {\n  default:\n    break;\n}",
                Style);
   verifyFormat(
       "/*comment*/ switch (int *p, *q; p != q) {\n  default:\n    break;\n}",
       Style);
+
+  verifyFormat("if ([](int* p, int* q) {}()) {\n}", Style);
+  verifyFormat("for ([](int* p, int* q) {}();;) {\n}", Style);
+  verifyFormat("for (; [](int* p, int* q) {}();) {\n}", Style);
+  verifyFormat("for (;; [](int* p, int* q) {}()) {\n}", Style);
+  verifyFormat("switch ([](int* p, int* q) {}()) {\n  default:\n    break;\n}",
+               Style);
 }
 
 TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
   verifyFormat("arr[foo ? bar : baz];");
   verifyFormat("f()[foo ? bar : baz];");
   verifyFormat("(a + b)[foo ? bar : baz];");
   verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
 }