invalid command name "button"
    while executing
"button .a -text "Ceco est\n le Bouton\n A " -bg green -font "Courier 24" -command [list raise .f]"
    (in namespace eval "::request" script line 3)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)
OUTPUT BUFFER:
#!/usr/local/bin/wish

pack [button .a -text "Ceco est\n le Bouton\n A " -bg green -font "Courier 24" -command [list raise .f]]

toplevel .f
pack [button .f.b -text "Ceco est\n le Bouton\n B " -bg cyan -font "Courier 24" -command [list raise .g]]

toplevel .g
pack [button .g.c -text "Ceco est\n le Bouton\n C " -bg yellow -font "Courier 24" -command [list raise .]]