proc bind_button3 {w cmd} {
bind $w <Any-Button-3> $cmd
if {[is_MacOSX]} {
+ # Mac OS X sends Button-2 on right click through three-button mouse,
+ # or through trackpad right-clicking (two-finger touch + click).
+ bind $w <Any-Button-2> $cmd
bind $w <Control-Button-1> $cmd
}
}