From b4211ef206827f85378b9392472fdc14e1e9f6c4 Mon Sep 17 00:00:00 2001
From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Wed, 22 Feb 2023 12:02:10 +0100
Subject: [PATCH] Fix completion in math when inline completion was not yet
 shown

It is necessary to set finish=true when the completion is unique.
Otherwise, one gets \upsilon instead of the proper glyph.

Fixes bug #12674.
---
 src/frontends/qt/GuiCompleter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/frontends/qt/GuiCompleter.cpp b/src/frontends/qt/GuiCompleter.cpp
index 2aee436912..661178575b 100644
--- a/src/frontends/qt/GuiCompleter.cpp
+++ b/src/frontends/qt/GuiCompleter.cpp
@@ -710,7 +710,7 @@ void GuiCompleter::tab()
 	docstring longestCompletion = longestUniqueCompletion();
 	prefix = cur.inset().completionPrefix(cur);
 	docstring postfix = longestCompletion.substr(min(longestCompletion.size(), prefix.size()));
-	cur.inset().insertCompletion(cur, postfix, false);
+	cur.inset().insertCompletion(cur, postfix, uniqueCompletionAvailable());
 	old_cursor_ = bv.cursor();
 	updatePrefix(cur);