ti list -t yields TicGit-ng-1.0.2.18/lib/ticgit-ng/cli.rb:54:in `execute!': missing argument: -t (OptionParser::MissingArgument)
% ~/.gems/bin/ti.ruby2.2 list -t
/home/yac/.gems/gems/TicGit-ng-1.0.2.18/lib/ticgit-ng/cli.rb:54:in `execute!': missing argument: -t (OptionParser::MissingArgument)
from /home/yac/.gems/gems/TicGit-ng-1.0.2.18/lib/ticgit-ng/cli.rb:9:in `execute'
from /home/yac/.gems/gems/TicGit-ng-1.0.2.18/bin/ti:13:in `<top (required)>'
from /home/yac/.gems/bin/ti.ruby2.2:23:in `load'
from /home/yac/.gems/bin/ti.ruby2.2:23:in `<main>'