From 43dc893f3f79e6bd5a57b20f95fb0de8ee4997be Mon Sep 17 00:00:00 2001
From: Jan Sundermeyer <sunderme@gmx.de>
Date: Tue, 7 Nov 2023 19:12:57 +0100
Subject: [PATCH] clean up command stack if an argument is closed

fix #3292
---
 src/latexparser/latexparsing.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/latexparser/latexparsing.cpp b/src/latexparser/latexparsing.cpp
index 3e8cbc548b..a1cbc5be35 100644
--- a/src/latexparser/latexparsing.cpp
+++ b/src/latexparser/latexparsing.cpp
@@ -582,6 +582,10 @@ bool latexDetermineContexts2(QDocumentLineHandle *dlh, TokenStack &stack, Comman
                     tk.subtype=tk1.subtype;
                     level=tk1.level; // restore original level
                     lexed.append(tk);
+                    // clean up command stack (unrealized arguments)
+                    while (!commandStack.isEmpty() && commandStack.top().level > level) {
+                        commandStack.pop();
+                    }
                 }
                 if (!commandStack.isEmpty() && commandStack.top().level == level) {
                     CommandDescription cd = commandStack.top();