From b5b3f56abb036edf2e03c6449e5ae16d576401ad Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Wed, 2 Mar 2022 12:48:10 +0100
Subject: [PATCH] Encoding::fromLaTeXCommand: properly record requirements when
 exiting early

---
 src/Encoding.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Encoding.cpp b/src/Encoding.cpp
index a4c706bd3b..d0610efb2e 100644
--- a/src/Encoding.cpp
+++ b/src/Encoding.cpp
@@ -390,6 +390,9 @@ docstring Encodings::fromLaTeXCommand(docstring const & cmd, int cmdtype,
 					docstring value;
 					value += unicodeSymbol.first;
 					needsTermination = !unicodeSymbol.second.mathNoTermination();
+					if (req && unicodeSymbol.second.mathFeature()
+						&& !unicodeSymbol.second.mathPreamble().empty())
+							req->insert(unicodeSymbol.second.mathPreamble());
 					return value;
 				}
 			}
@@ -400,6 +403,9 @@ docstring Encodings::fromLaTeXCommand(docstring const & cmd, int cmdtype,
 					docstring value;
 					value += unicodeSymbol.first;
 					needsTermination = !unicodeSymbol.second.textNoTermination();
+					if (req && unicodeSymbol.second.textFeature()
+						&& !unicodeSymbol.second.textPreamble().empty())
+						req->insert(unicodeSymbol.second.textPreamble());
 					return value;
 				}
 			}