[LyX/2.3.x] Consider nesting when checking whether an inset is in a title

[Juergen Spitzmueller]

commit 84360735823f6ada0417f61e7bd788f9a64ac05b
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Mon Aug 10 08:54:56 2020 +0200

    Consider nesting when checking whether an inset is in a title
    
    Amends e2a29fe55686
    
    No status entry needed.
---
 src/insets/InsetText.cpp |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/insets/InsetText.cpp b/src/insets/InsetText.cpp
index 358a377..94f8c38 100644
--- a/src/insets/InsetText.cpp
+++ b/src/insets/InsetText.cpp
@@ -796,6 +796,14 @@ void InsetText::updateBuffer(ParIterator const & it, UpdateType utype)
 		// Record in this inset is embedded in a title layout
 		// This is needed to decide when \maketitle is output.
 		intitle_context_ = it.paragraph().layout().intitle;
+		// Also check embedding layouts
+		size_t const n = it.depth();
+		for (size_t i = 0; i < n; ++i) {
+			if (it[i].paragraph().layout().intitle) {
+				intitle_context_ = true;
+				break;
+			}
+		}
 	} else {
 		DocumentClass const & tclass = buffer().masterBuffer()->params().documentClass();
 		// Note that we do not need to call: