[LyX/master] Another tiny correction (not yet ideal)

[Juergen Spitzmueller]

commit 649cb309638734db324be8d2fa8fb06073ddd136
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Jul 18 18:11:59 2023 +0200

    Another tiny correction (not yet ideal)
---
 src/frontends/qt/LaTeXHighlighter.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt/LaTeXHighlighter.cpp b/src/frontends/qt/LaTeXHighlighter.cpp
index f4ce08f..69ddff6 100644
--- a/src/frontends/qt/LaTeXHighlighter.cpp
+++ b/src/frontends/qt/LaTeXHighlighter.cpp
@@ -50,7 +50,7 @@ void LaTeXHighlighter::highlightBlock(QString const & text)
 	if (keyval_) {
 		// Highlight key-val options. Used in some option widgets.
 		// 1. The keys. Might or might not have values
-		static QRegularExpression exprKeyvalkey("[^=,{]+");
+		static QRegularExpression exprKeyvalkey("[^=,}]+");
 		// 2. These are grouped values such as "key1={val,val},key2=val"
 		static QRegularExpression exprKeyvalgval("[^=,{]+{[^}]+}");
 		// 3. And normal values if we don't find grouped ones