For disabling the other tabs, you can edit these settings under `Edit->Preferences->Various`:

```diff --- msgwin1/geany.conf 2020-04-30 23:43:49.877942591 -0700 +++ msgwin2/geany.conf 2020-04-30 23:45:33.495469083 -0700 @@ -45,10 +45,10 @@ compiler_tab_autoscroll=true statusbar_template=line: %l / %L col: %c sel: %s %w %t %mmode: %M encoding: %e filetype: %f scope: %S new_document_after_close=false -msgwin_status_visible=true -msgwin_compiler_visible=true -msgwin_messages_visible=true -msgwin_scribble_visible=true +msgwin_status_visible=false +msgwin_compiler_visible=false +msgwin_messages_visible=false +msgwin_scribble_visible=false documents_show_paths=true sidebar_page=0 pref_main_load_session=true ```

For hiding the message window tabs altogether (ie. to hide the lone tab for "Terminal") you could either patch Geany to add an option, make a plugin to do it, or you could use CSS to somewhat okay effect - it would be a lot easier if #2469 gets merged - probably something like:

```css #notebook_info tab { padding: 0px; font-size: 0.1em; border-width: 0px; } ```

I don't think GTK+ CSS has a thing like `display: none;` or changing the size like real CSS, but above makes the tabs pretty small here. Someone with more GTK+ theming skills could probably find a better way.

I doubt anyone would oppose a pull request to add a preference to hide message window tabs entirely.