In kate there seems to be "dynamic" and "static" word wrap options in view -> word wrap and settings -> configure kate -> editing -> general respectively.
"Static" is off by default while "dynamic" is on. Turning off "dynamic" gives the behaviour I want (i.e. no word wrap... of any kind). However, this option seems to be per file.
How can I disable word wrap in the kate text editor for all files and have that option persist?