From bd276fbb2824fd4e10a5c83fbccf1ad009237a47 Mon Sep 17 00:00:00 2001
From: Pavel Guzenfeld <pavelguzenfeld@gmail.com>
Date: Sun, 29 Mar 2026 23:48:13 +0000
Subject: [PATCH] Map .inc files to C++ in Doxygen extension mapping

libeigen/eigen!2338
---
 doc/Doxyfile.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index 445fc0a6f..421d006c2 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -35,6 +35,7 @@ ALIASES                = "only_for_vectors=This is only for vectors (either row-
                          "eigenAutoToc=<!-- TOC placeholder -->" \
                          eigenManualPage=\defgroup
 EXTENSION_MAPPING      = .h=C++ \
+                         .inc=C++ \
                          no_extension=C++
 DISTRIBUTE_GROUP_DOC   = YES
 NUM_PROC_THREADS       = 0