Fix setting of is_child runparam if grandchildren are involved

diff --git a/src/insets/InsetInclude.cpp b/src/insets/InsetInclude.cpp
index bd97cbeb8e1ad4184900545a1434c7de3e8610b5..f7aca6d5f5d11db0b61e9ba4155ab0021051ae38 100644 (file)
--- a/src/insets/InsetInclude.cpp
+++ b/src/insets/InsetInclude.cpp
@@ -922,9 +922,12 @@ void InsetInclude::validate(LaTeXFeatures & features) const
                        // otherwise it would always be the master buffer,
                        // and nested includes would not work.
                        features.setBuffer(*tmp);
+                       // Maybe this is already a child
+                       bool const is_child =
+                               features.runparams().is_child;
                        features.runparams().is_child = true;
                        tmp->validate(features);
-                       features.runparams().is_child = false;
+                       features.runparams().is_child = is_child;
                        features.setBuffer(buffer());
                }
        }