Comment 0 for bug 1806060

Newer versions of killall (Ubuntu 18.04+) display usage when the signal is passed like:

killall -INT <name>

and instead require it to be passed as:

killall -int <name>

In previous versions from Ubuntu 14.04 and 16.04, this doesn't happen. Is this a bug or a feature change? If so perhaps it should be noted in the usage information? The man page suggests capitals with "-SIGNAL". but that doesn't work any more.