tset -VERSION (return code: 0)
ncurses 6.0.20160213
tset --help (return code: 1)
tset: invalid option -- '-'
Usage: tset [options] [terminal]
Options:
-c set control characters
-e ch erase character
-I no initialization strings
-i ch interrupt character
-k ch kill character
-m mapping map identifier to type
-Q do not output control key settings
-r display term on stderr
-s output TERM set command
-V print curses-version
-w set window-size