[clang] [clang-format] Add SpaceAfterOperatorKeyword option (PR #137610)

[Owen Pan via cfe-commits]

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@@ -17630,6 +17630,10 @@ TEST_F(FormatTest, ConfigurableSpaceBeforeParens) {
   verifyFormat("int x = int (y);", SomeSpace2);
   verifyFormat("auto lambda = []() { return 0; };", SomeSpace2);
 
+  FormatStyle SpaceAfterOperatorKeyword = getLLVMStyle();
+  SpaceAfterOperatorKeyword.SpaceAfterOperatorKeyword = true;
+  verifyFormat("bool operator ++(int a)", SpaceAfterOperatorKeyword);
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owenca wrote:

This is not about space before parens, so it should be in a separate `TEST_F`.

https://github.com/llvm/llvm-project/pull/137610