The help for undeploy says:
in case the deployment name isn't specified, the presence of the -l switch
will make the existing deployments printed one deployment per line, instead of
in columns (the default).

but its output just displays in short format:

$JBOSS_HOME/bin/jboss-cli.sh --connect --command="undeploy -l"
hello.war

This is not consistent with deploy -l, which does show the details one deployment per line.

$JBOSS_HOME/bin/jboss-cli.sh --connect --command="deploy -l"
NAME RUNTIME-NAME ENABLED STATUS
hello.war hello.war true OK