Checks if @action_name is valid.
@action_name is valid if it consists only of alphanumeric characters, plus '-' and '.'. The empty string is not a valid action name.
It is an error to call this function with a non-utf8 @action_name. @action_name must not be %NULL.
an potential action name
Return: %TRUE if @action_name is valid
2.38
See Implementation
Checks if @action_name is valid.
@action_name is valid if it consists only of alphanumeric characters, plus '-' and '.'. The empty string is not a valid action name.
It is an error to call this function with a non-utf8 @action_name. @action_name must not be %NULL.