[LyX/master] Track change of label name

[Juergen Spitzmueller]

commit e65fdc6a51c03a51dced9f16dd30487607c50031
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sun Dec 29 11:01:18 2019 +0100

    Track change of label name
    
    Fixes #11556
---
 src/insets/InsetLabel.cpp |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/src/insets/InsetLabel.cpp b/src/insets/InsetLabel.cpp
index 6d5c0b6..bcb7290 100644
--- a/src/insets/InsetLabel.cpp
+++ b/src/insets/InsetLabel.cpp
@@ -105,7 +105,16 @@ void InsetLabel::updateLabelAndRefs(docstring const & new_label,
 	UndoGroupHelper ugh(&buffer());
 	if (cursor)
 		cursor->recordUndo();
-	setParam("name", label);
+	if (buffer().params().track_changes) {
+		// With change tracking, we insert a new label and
+		// delete the old one
+		InsetCommandParams p(LABEL_CODE, "label");
+		p["name"] = label;
+		string const data = InsetCommand::params2string(p);
+		lyx::dispatch(FuncRequest(LFUN_INSET_INSERT, data));
+		lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_FORWARD));
+	} else
+		setParam("name", label);
 	updateReferences(old_label, label);
 }