From 6631ee3334607cc5e0b670191f9df048c157325a Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Mon, 24 Oct 2016 14:50:53 +0100
Subject: [PATCH] JAL-2272 Cmd-drag to group edit sequences on Mac (Ctrl-click
 for popup menu)

---
 help/html/editing/index.html  |    5 ++---
 src/jalview/gui/SeqPanel.java |    7 ++++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/help/html/editing/index.html b/help/html/editing/index.html
index 471e520..fd8c5a3 100755
--- a/help/html/editing/index.html
+++ b/help/html/editing/index.html
@@ -49,9 +49,8 @@
     right to insert gaps and remove gaps.<br> If the current
     selection is a group over all sequences in the alignment, or a group
     over some sequences or all columns in the alignment, then hold down
-    either &quot;Control&quot; key (or the &quot;Alt;&quot; on OSX if
-    &quot;Control&quot; does not work) and drag the residue left or
-    right to edit all sequences in the defined group at once.
+    &quot;Control&quot; key (&quot;Cmd&quot; key on OSX) and drag the residue 
+    left or right to edit all sequences in the defined group at once.
   </p>
   <p>
     <em>Copy/paste/cut/delete</em> - any sequences which are in the
diff --git a/src/jalview/gui/SeqPanel.java b/src/jalview/gui/SeqPanel.java
index bae80db..3266fab 100644
--- a/src/jalview/gui/SeqPanel.java
+++ b/src/jalview/gui/SeqPanel.java
@@ -616,13 +616,14 @@ public class SeqPanel extends JPanel implements MouseListener,
       return;
     }
 
-    if (evt.isShiftDown() || evt.isAltDown() || evt.isControlDown())
+    boolean isControlDown = Platform.isControlDown(evt);
+    if (evt.isShiftDown() || isControlDown)
     {
-      if (evt.isAltDown() || evt.isControlDown())
+      editingSeqs = true;
+      if (isControlDown)
       {
         groupEditing = true;
       }
-      editingSeqs = true;
     }
     else
     {
-- 
1.7.10.2