The weapon is not https://en.wikipedia.org/wiki/Batik
Batik is a dyeing technique using wax resist. The term is also used to describe patterned textiles created with that technique.
Thanks to the comments. It is https://en.wikipedia.org/wiki/Badik
The
badik or badek (Makassarese: ᨅᨉᨗ badiʼ, Buginese: ᨀᨓᨒᨗ kawali) is a
knife or dagger developed by the Bugis and Makassar people of southern
Sulawesi, Indonesia.
