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IDProjectCategoryView StatusLast Update
0009354ardourbugspublic2023-06-12 19:52
Reportercolinf Assigned To 
Status newResolutionopen 
Summary0009354: No way to remove a single cue marker from a region source
DescriptionThere's no way (at least, as far as I can see) to remove a single cue marker from a region's source. There's "Region > Markers > Clear Region Cue Markers" to delete them all, but removing just one seems impossible.
TagsNo tags attached.



2023-06-03 16:50

updater   ~0027701

So it appears that ardour's standard <shift>+<right-click> to delete is somehow supposed to be implemented for region cue markers, but in fact provokes an assert() failure in debug builds, thus:

An UNDO transaction was started while a prior command was underway. Aborting command (remove cue marker) and prior (remove region marker)
ardour-7.3.280: ../libs/ardour/ void ARDOUR::Session::begin_reversible_command(GQuark): Assertion `false' failed.


2023-06-12 19:52

updater   ~0027743

The attached at least gets shift+right-click working to remove a single region cue marker. It still doesn't work quite as well as I'd like: it only removes cue markers if their containing region is selected in 'G'rab mode. I feel it ought to work regardless of whether the region is selected, and ideally in 'D'raw & internal 'E'dit modes too - I'll see whether I can find the time to implement that soon. Otherwise I'll just merge this anyway.
0001-fix-shift-right-click-removal-of-region-source-marke.patch (925 bytes)   
From 05849ee45c903e381c8404fe93953d93de448089 Mon Sep 17 00:00:00 2001
From: Colin Fletcher <>
Date: Mon, 12 Jun 2023 16:43:21 +0100
Subject: [PATCH] fix shift+right-click removal of region source marker

 gtk2_ardour/ | 2 --
 1 file changed, 2 deletions(-)

diff --git a/gtk2_ardour/ b/gtk2_ardour/
index 9bb7360880..e32d61f557 100644
--- a/gtk2_ardour/
+++ b/gtk2_ardour/
@@ -889,7 +889,6 @@ Editor::really_remove_global_marker (Location* loc)
 Editor::really_remove_region_marker (ArdourMarker* marker)
-	begin_reversible_command (_("remove region marker"));
 	RegionView* rv = marker->region_view();
 	if (!rv) {
@@ -905,7 +904,6 @@ Editor::really_remove_region_marker (ArdourMarker* marker)
 	remove_region_marker (cm);
-	commit_reversible_command ();
 	return FALSE;

Issue History

Date Modified Username Field Change
2023-05-27 21:25 colinf New Issue
2023-06-03 16:50 colinf Note Added: 0027701
2023-06-03 18:06 colinf Category features => bugs
2023-06-12 19:52 colinf Note Added: 0027743
2023-06-12 19:52 colinf File Added: 0001-fix-shift-right-click-removal-of-region-source-marke.patch