[clang] [clang-format] Add IndentPPDirectives Leave option (PR #139750)

[via cfe-commits]

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@@ -5547,22 +5547,62 @@ TEST_F(FormatTest, IndentsPPDirectiveWithPPIndentWidth) {
                "#endif",
                style);
 
+  style.IndentPPDirectives = FormatStyle::PPDIS_Leave;
+  style.IndentWidth = 4;
+  verifyNoChange("#ifndef foo\n"
+                 "#define foo\n"
+                 "if (emacs) {\n"
+                 "#ifdef is\n"
+                 "#define lit           \\\n"
+                 "    if (af) {         \\\n"
+                 "        return duh(); \\\n"
+                 "    }\n"
+                 "#endif\n"
+                 "}\n"
+                 "#endif",
+                 style);
+  verifyNoChange("#ifndef foo\n"
+                 "  #define foo\n"
+                 "if (emacs) {\n"
+                 "  #ifdef is\n"
+                 "#define lit           \\\n"
+                 "    if (af) {         \\\n"
+                 "        return duh(); \\\n"
+                 "    }\n"
+                 "  #endif\n"
+                 "}\n"
+                 "#endif",
+                 style);
+  verifyNoChange("  #ifndef foo\n"
+                 "#  define foo\n"
+                 "if (emacs) {\n"
+                 "#ifdef is\n"
+                 "  #  define lit       \\\n"
+                 "    if (af) {         \\\n"
+                 "        return duh(); \\\n"
+                 "    }\n"
+                 "#endif\n"
+                 "}\n"
+                 "  #endif",
+                 style);
+  verifyNoChange("#ifdef foo\n"
+                 "#else\n"
+                 "/* This is a comment */\n"
+                 "#ifdef BAR\n"
+                 "#endif\n"
+                 "#endif",
+                 style);
+
   style.IndentWidth = 1;
   style.PPIndentWidth = 4;
-  verifyFormat("#if 1\n"
-               "#define X \\\n"
-               " {        \\\n"
-               "  x;      \\\n"
-               "  x;      \\\n"
-               " }\n"
-               "#endif",
-               style);
-  verifyFormat("#define X \\\n"
-               " {        \\\n"
-               "  x;      \\\n"
-               "  x;      \\\n"
-               " }",
-               style);
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owenca wrote:

Why did you remove the existing tests?

https://github.com/llvm/llvm-project/pull/139750