tmux jupyterlab fix

Misc/Virtual-Terminals.md

@@ -43,6 +43,30 @@ set -g mouse on
 set -g history-limit 30000
 ```
 
+### Tmux inside JupyterLab on TeachingHub
+
+By coincidence the Jupyterlab uses the same control sequence to toggle the file browser in jupyterlab as tmux. `CTRL+b` .
+
+To change that, we will just remove the jupyterlab shortcut.
+In Jupyterlab go to Settings, Advanced Settings Editor, Keyboard Shortcuts. In the user pane add this:
+
+```yaml
+{
+    "shortcuts":[
+        {
+            "command": "application:toggle-left-area",
+            "keys": [
+                "Accel B"
+            ],
+            "selector": "body",
+            "disabled": true
+        }
+        ]
+}
+```
+
+When you can click then save button on the upper right corner, you are fine. Otherwise there might be a syntax error, as indicated in the lower right corner. That might happen if you need to merge things. Now you should be able to control tmux again inside the jupyterlab.
+
 
 ### Sharing a tmux session with other users?
 In the first terminal, start tmux where shared is the session name and shareds is the name of the socket: