[clang-tools-extra] [clang-doc] Add a Mustache Markdown generator (PR #177221)

[Paul Kirth via cfe-commits]

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@@ -150,8 +199,17 @@ class ClassInNestedNamespace {};
 // HTML-NESTED-INDEX:                 <p> Function in NestedNamespace</p>
 // HTML-NESTED-INDEX:             </div>
 // HTML-NESTED-INDEX:         </div>
-// HTML-NESTED-INDEX:         <p>Defined at line 105 of file {{.*}}namespace.cpp</p>
+// HTML-NESTED-INDEX:         <p>Defined at line 146 of file {{.*}}namespace.cpp</p>
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ilovepi wrote:

Its fine that we dont, but would a LINE directive be helpful?

https://github.com/llvm/llvm-project/pull/177221