From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Thu, 16 Mar 2023 10:54:33 +0000 (+0100)
Subject: Fix completion in math when inline completion was not yet shown (take 2)
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=98b5a167930a5dc1e3a9a07ff0afb3dba58bb515;p=features.git

Fix completion in math when inline completion was not yet shown (take 2)

Better version of b4211ef2: we handle the case of a unique completion early.

Fixes bug #12674.
---

diff --git a/src/frontends/qt/GuiCompleter.cpp b/src/frontends/qt/GuiCompleter.cpp
index 2aee436912..01ae3ccec8 100644
--- a/src/frontends/qt/GuiCompleter.cpp
+++ b/src/frontends/qt/GuiCompleter.cpp
@@ -688,9 +688,10 @@ void GuiCompleter::tab()
 	// If completion is active, at least complete by one character
 	docstring prefix = cur.inset().completionPrefix(cur);
 	docstring completion = qstring_to_ucs4(currentCompletion());
-	if (completion.size() <= prefix.size()) {
+	if (uniqueCompletionAvailable() || completion.size() <= prefix.size()) {
 		// finalize completion
-		cur.inset().insertCompletion(cur, docstring(), true);
+		docstring const postfix = completion.substr(min(completion.size(), prefix.size()));
+		cur.inset().insertCompletion(cur, postfix, true);
 
 		// hide popup and inline completion
 		hidePopup();