This patch gives tabbed an icon. This icon is the currently selected tab's icon.
If the selected tab has no icon (or no tab is selected), use a (admittedly ugly) default icon.
This patch supports both the new EWMH (_NET_WM_ICON) and
legacy ICCCM (WM_ICON) ways of setting a window's icon.
- Mikau - <mikauATaaathats3as.com>