replace --keyboard-name with $DOTOOL_KEYBOARD_NAME

doc/dotool.1.scd

@@ -39,6 +39,10 @@ and *DOTOOL_XKB_VARIANT*. For example:
 
 	*echo type azerty | DOTOOL_XKB_LAYOUT=fr dotool*
 
+You can also specify the name to give the virtual keyboard with the environment
+variable *DOTOOL_KEYBOARD_NAME*, which can be useful making rules for your
+environment.
+
 Currently the *type* action has only heuristic support for dead keys.
 
 # OPTIONS
@@ -46,9 +50,6 @@ Currently the *type* action has only heuristic support for dead keys.
 *-h*, *--help*
 	Print help and exit.
 
-*--keyboard-name=*_NAME_
-	Specify the name to give the virtual keyboard device.
-
 *--list-keys*
 	Print the possible Linux keys and exit.
 

dotool.go

@@ -37,7 +37,6 @@ The supported actions are:
     typedelay MILLISECONDS
     typehold MILLISECONDS
 
---keyboard-name=NAME Specify the name to give the keyboard device.
 --list-keys    Print the possible Linux keys and exit.
 --list-x-keys  Print the possible XKB keys and exit.
 --version      Print the version and exit.
@@ -230,7 +229,6 @@ func main() {
 		initKeys(keymap)
 	}
 
-	keyboardName := []byte("dotool keyboard")
 	{
 		o := opt.NewOptSet()
 
@@ -241,11 +239,6 @@ func main() {
 		})
 		o.Alias("h", "help")
 
-		o.Func("keyboard-name", func(s string) error {
-			keyboardName = []byte(s)
-			return nil
-		})
-
 		o.FlagFunc("list-keys", func() error {
 			listKeys(keymap, LinuxKeys)
 			os.Exit(0)
@@ -273,6 +266,10 @@ func main() {
 		}
 	}
 
+	keyboardName := []byte(os.Getenv("DOTOOL_KEYBOARD_NAME"))
+	if len(keyboardName) == 0 {
+		keyboardName = []byte("dotool keyboard")
+	}
 	keyboard, err := uinput.CreateKeyboard("/dev/uinput", keyboardName)
 	if err != nil {
 		fatal(err.Error())