Indeed! Here in Norway we have a flag with “split and tongue” used as the state and war flag and ensign, but our civil flag is rectangular.

Nepal’s flag is a thing of beauty. While the shape of the flag is ultimately based on a historical double-pennant, the shape is nowadays taken as representing a pagoda, or the shape of the Himalayas… I think this is a very clever form of symbolism, to utilize the shape of the flag itself to convey meaning. More flags should do that!